Entrar al WikiAtlas de las Américas

Globo dando vueltasEl WikiAtlas de las Américas (Wiki por colaborativo) va encaminado a sumar y sistematizar el conocimiento geográfico desde Alaska hasta la Tierra de Fuego. Independiente de si somos expertos en Geografía descriptiva local y regional, tenemos todos algo que decir sobre nuestros espacios de vida. En este orden de ideas, el WikiAtlas de las Américas se perfila como un proyecto alternativo llevado acabo por actores que participan día con día en la creación y modificación de sus espacios geográficos. El WikiAtlas de las Américas pretende ser también uno de los espacios en donde se puede registrar una memoria geográfica de lugares que marcaron recuerdos, convivencias y hasta un imaginario que sustenta una visión del mundo.

WikiAtlas of the Americas (Wiki for collaborative) aims to collect and systematize geographic knowledge from Alaska toTierra de Fuego. Even those who are not expert in descriptive-local and regional geography, have something to say on our life space. Based on this idea, WikiAtlas of the Americas is an alternative Project carried out by everyday participating actors in creating and modifying their geographic spaces. WikiAtlas of the Americas pretends also to be aspace to register a geographic memory of places of remembering, life experiences, and imaginaries sustaining a vision of the world.

Consejos y sugerencias para la redacción

Para llevar acabo la redacción del WikiAtlas en condiciones optimas de colaboración y sencillez, es necesario ajustarnos a algunos reglas de redacción, técnicas y de seguridad del sitio. Para cualquier, por favor dejar su pregunta en el foro, le prometemos una contestación rápida.

ENSEÑANZA DE GEOCIÊNCIAS Y LOS RETOS URBANOS: EL TEMA SUSTENTABILIDAD EN MICROCUENCAS HIDROGRÁFICAS.

El aprendizaje del concepto sustentabilidad requiere esfuerzos desde la enseñanza fundamental, tornándose más efectiva cuando presentada como necesaria para una mejor cualidad de vida en el lugar en que se vive. Objetivos: promover la asimilación del concepto sustentabilidad en microcuencas hidrográficas urbanas a través de actividades didácticas relacionadas a la geociencias. El estudio aconteció junto a un profesor de Geografía y más 30 alumnos, con edad entre 13 y 14 años, que cursan la 9ª serie de una escuela pública brasileña. Esta se localiza en São José dos Campos, estado de São Paulo, ciudad con aproximadamente 650.000 habitantes y que, como otras ciudades del mismo porte, sufre con las inundaciones. Los alumnos fueron preguntados sobre cuáles son los motivos de las inundaciones que atingen uno de los arroyos locales y respondieron ser la basura la principal causa. Esta respuesta no daba cuenta totalmente de la cuestión y demostraba la falta de conocimientos geocientíficos para justificar las demás e importantes causas de las inundaciones. El profesor, entonces, elaboró actividades buscando que los alumnos conocieran, a través de textos, videos, la confección de una maqueta de relieve y trabajos de campo, los problemas comunes que ocurren en la ocupación urbana (como el proceso de assoreamento de los ríos y la impermeabilización del suelo) y como promover la sustentabilidad de la microcuenca local. Este estudio de mestrado demuestra la importancia del profesor como mediador en el proceso de enseñanza-aprendizaje, debatiendo alternativas para el desarrollo sustentable en el crecimiento de las ciudades, principalmente junto a la preservación de los recursos hídricos y su utilización por las actuales y futuras generaciones.

www.geosyr.com.ar portal gratuito de Geoinformacion

www.geosyr.com.ar  es un portal gratuito y de libre acceso a datos geograficos e imagenes satelitales actualizadas. principalmente de Argentina y en un futuro de otros paises de America Latina.  se basa en el concepto de interactividad Web 2.0  y de comunidades virtuales que comparten intereses comunes. es un proyecto totalmente privado y autofinanciado con aportes de sponsors del sectro agropecuario principalmente.

Saludos

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Índice global

En el CEAGI pensamos que el producto de la contribución de contenidos es un sustento racional para la organización temática del WikiAtlas de las Américas. Bajo esta despectiva, con la finalidad de alentar la producción de contenidos, sin ninguna limitación estructural, lo ideal fue tratar de quedarnos en una proposición muy general de las temáticas del WikiAtlas.
El índice global del WikiAtlas de las Américas se encuentra organizado bajo un enfoque temático general para facilitar un acercamiento de los intereses de manera independiente de la ubicación especifica en un país, región o localidad de las Américas. Conforme a los avances en la redacción del WikiAtlas entrara en función un mecanismo de búsqueda de contenidos con atributos de ubicación geográfica o territorial.

 

Tópicos de Geografía física

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Tópicos de Geografía humana y social

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Mexicali Imperial Valley

The Mexicali-Imperial Valley: In Search of an Explanation of the Asymmetry of Agrarian Morphology Dr. Djamel Toudert Researcher at the Institute for Social Research at the Autonomous University of Baja California. Email Abstract The flagrant asymmetry that exists in agrarian morphology along the lower Colorado River deltaborder region can be determined from recorded aerial support data (satellite images, aerial photographs, and so forth). It clearly stresses the spatial contrast between the Mexicali and Imperial agricultural valleys. Such morphological frameworks seem to point toward a territorial antagonism that shapes two border agricultural models. Beyond the mere structural and organizational events that take place on either side of the border, the convergence of cross-border productive and trading processes raises questions regarding the nature and meaning of the asymmetry that exists in the binational agricultural scheme. This essay aims to explore some explicative elements within the historic, socioeconomic, and political frameworks that gave way to the development of the region.   Introduction:    The Poor Quality of Recorded Spatial Support Data Despite its pertinent and pedagogical aspects, the satellite imagery of the lower Colorado delta that has circled the world as an illustration of the border’s contrasts has also generated countless speculations that search for a rational explanation for a complex landscape gap; 1 a gap in the anthropic front in an arid and desert environment; a gap in the agricultural sector contrasting the urban sector; and, finally, a border gap between two entities with different values and identities (see Figure 1). What might seem to be a boring case of déjà vu in other latitudes takes on a sensational aspect in this region with the location of the border between a developing country and the most affluent country in the world. Within this context, all arguments are valid: from the stereotypes derived from the positive connotation regarding the solid and orthogonal agrarian morphology juxtaposed with another that is arrogant and anarchical, to the more elaborate and ideological, but not very convincing, contents. Could the recorded landscape terms aim to have an explanatory value in such conditions that provide few dimensions of the social relationship with space?   Figure 1. Structural Units of the Landscape South of the Colorado River Delta

On the one hand, the scale and biodimensional characteristics ignore the meaning of the volumes and pertinence of small structures. In this respect, a satellite image already constitutes a more advanced way in the abstraction of the original landscape. On the other hand, questions arise regarding the credibility of a landscape description carried out without taking into account the human and social dimensions that sustain it. In case the existence of a territorial structure that does not reflect the nature of the productive and social events can be admitted (that is, an adaptation to comply with complex processes or those foreign to the structures written on the landscape), under these conditions, is a tricky landscape being faced? This essay will attempt to show that a tricky morphology is faced; one that does not reflect the nature of the agrarian practice of the moment, in which the landscape reading does not indicate the dimension or variety of the events underlying the visible order. The current asymmetry in the agrarian morphology between the Mexicali and Imperial valleys, despite its physical content and spatial-temporal changes, is also a sociopolitical field that has registered the major binational decisions of the past century.   Why did the Neighboring Valleys Turn Their Backs on One Another?   The continuity of agricultural space in the lower Colorado delta constitutes an event founded recently within the framework of the binational colonization established by the migratory waves of pioneers and the investments in the open and arid spaces of the Californias (Toudert 1999). Slightly more than a century ago, what currently appears to be a succession of green meadows and grain and vegetables fields settled around cities and towns, was a desert region known for its austere and desolate conditions. The implantation of Imperial and Mexicali valleys in an environment of scarce hospitality was the starting point for the development of a border area. For more than half a century, this border area would wield regional leadership through the MexicaliValley, after causing the downfall of the dying powers in the southern Baja California territory (Sánchez 1994). The conjunction of investment flows toward the southwestern United States and the flow of Mexicans toward this new “El Dorado,” aided the colonization measures of Porfirio Díaz’s regime to start a symmetric project that barely crossed over to the U.S. side of the border.2 The disposition of the Mexicali Valley, along with the Imperial Valley, emerged within conditions of integration and detachment. These conditions were subordinate to the working of capitalism orchestrated by world commercial centers in an environment of a blurred border whose characteristics are the shared use of natural resources, development actors, and managerial strategies (Portais 1992). What many years later may seem to be the same logic of transborder development also has all the ingredients to aspire to symmetric agrarian morphology at the beginning of colonization and during the height of the cotton cycle prior to World War II.3 This situation would not last long. The concentration of land and hydraulic resources in the hands of the Colorado River Land Company and affiliates was such that problems could arise at any moment. Naturally, the first events did not take long to happen with land assaults by the contingency of Mexican workers deported from the United States as a consequence of the 1929 economic crisis. Such acts were legitimized by President Lázaro Cárdenas through the nationalization of the territorial and hydraulic heritage of authorized enterprises.4 From this point forward, Mexico has experienced a growing will to affirm its identity in the border space with the very late application of the agrarian reform that benefited thousands of new owners that arrived in successive waves from the early states that expelled their inhabitants.5 The agrarian distribution would drastically change the nature of ownership in the Mexicali Valley. In fact, the leap was made from a system of large estate ownership, typical of the old Díaz regime, to one of contracted microproperties within the constitutional and post-Revolutionary legal framework. These changes, in addition to being quite radical, are also fast and complex, culminating with the creation of ejidos (community-owned land), colonias (neighborhoods), and a network of cities and towns to carry out what remained of the cotton cycle (Toudert 1997). These new organizational and structural terms allow the border’s political and administrative significance to be highlighted by the subordination of space to internal determinism and the integration of actors into a new political order that is gradually being developed in the region. It is worth mentioning that at this point in time the U.S.-Mexican border is far from confrontational. Along the border, processes of cooperative exchange take place on a daily basis, making good use of old transborder practices that have been confirmed and extended with duty-free zones (Romano 1990). The end of the natural fiber bonanza came with the fall of international prices, ushering in the practice of a productive reconversion that benefited from national programs of food self-sufficiency, such as SAM (1976), PRONAL (1983), and PRONADRI (1985).6 These programs would progressively tie production and its actors to central power after gaining maturity within the external productive and commercial chains. The new centralized and normalized productive period began a new territorial recomposition with the production of grains. This act took place with the transfer of the land and water rights of some ejidatarios (common landholders) and tenant farmers who considered it pertinent to adopt a new career with the opportunities offered by the young regional industry and migration to the United States. At the same time that the recomposition of agricultural land took place, the political power of some families benefiting from the new territorial concentration in the regional field was being consolidated. Even though land transactions were formally prohibited due to agrarian law, new owners found gaps and mechanisms within the framework of their growing position to expand their wealth. The process of territorial concentration in the Mexicali Valley followed its course, taking advantage of the failure of the post-cotton reconversion, and arrived at its culminating point with the start up of the new horticultural cycle in the early 1980s (Stamatis 1993). The produce cycle began with important structural and organizational changes, including the return to external production, commercial chains, and the replacement of territorial acquisition with the leasing of land. The arrival of territorial reform with the revision of constitutional Article 27 and the promulgation of new agrarian law7 constituted an opportunity for the legalization of old informal practices in the Mexicali Valley. In this respect, and in contrast to other entities in Mexico, the MexicaliValley reformed itself before the reform (Toudert 1999). The anticipation regarding the legal events surrounding land transactions in the MexicaliValley, as noted earlier, began gradually with the decline of the cotton cycle. The agrarian morphology modification, as a consequence of the territorial recomposition, did not become concrete within the usual norms and standards of the productive capitalist circuits. In fact, agrarian morphology, as a whole, continued to offer authorized structure with the conditions of the microproperty and its corollary of inefficiency in the modern agricultural organization and management. Parallel to the modernization of productive processes and the integration with binational sectorial chains, there is a fossilization of the agrarian morphology of the Mexicali Valley in keeping an asymmetry, which is considered here to be a frank expression of the territorial organization that reflects the nature of the an incompetent productive process. The Fossilization of Agrarian Morphology: A Barrier to Change? The fossilization of agrarian morphology can be compared in the case of the MexicaliValley to a mechanism of half adaptation in which a reconversion takes place only in the socioeconomic axis without touching upon the morphological aspects that remain almost the same. With this perspective, the current reconversion processes integrate the old morphological factor into the new business logic, making necessary adjustments to other production factors. In this case, a question emerges: why do actors make use of a limited operation field for the change of agrarian morphology in the MexicaliValley? The current agricultural morphology of the MexicaliValley is a product of a complex order of homogenous units composed of agricultural parcels set according to a geographical gradient and/or delimited by a landscape boundary of anthropic or natural origin (Toudert 1995). The writing of the homogeneous units in local landscapes takes its existence in the following interlinked and scaled limitations (see Figure 2): ·        Upper limits: The upper limits are result of the organization of the production space in relation to the natural barriers and political and administrative borders. These limits can be synthesized with a demarcation line between the mineral space and the agricultural space. The irrigation canals constitute, in this case, the heads of the agricultural front in the interior desert lands. The municipal boundaries east of the valley also introduce a morphological and organizational contrast materialized by the international border, on the one hand, and the Colorado River banks and the railroad line that divides the municipalities of Mexicali and San Luis Río Colorado, on the other. ·        Internal limits: Internal limits are products of the shape of the land and organization of ground communications and water and sewage infrastructure that cross the valley in endless networks. These barriers create visual local and intralocal morphological joints that translate into intermediary structural units divided into subunits and shape and/or orient constellations. ·        Intrinsic limits: Intrinsic limits are linked to the soil and physical-chemical state of the land. In fact, spaces overcome by salinity are gradually extracted for agricultural domains; thus, constituting secondary natural spaces colonized by halophyte vegetation that is different from indigenous species. Figure 2. Sample of the Logic of the Morphological Structure

In the framework of these natural and anthropic barriers of the MexicaliValley, those that stand out include the agrarian morphology with confusing and congruent boundaries, a division of parcels generally dominated by reduced or subreduced cellular structures with disarranged shapes, and multiple counterparts. In contrast, on the U.S. side of the border, the boundaries are frank and angular with multiple and repetitive shapes, in which a structural orthogonal plot dominates with linear perpendicular lots. The structural contrast between the two boundary valleys barely shows a zonal morphology in the MexicaliValley: - The southeastern zone of the City of Mexicali, characterized by reduced surfaces, a tight plot with multiple geometry dominated by the cellular type and the small orthogonal layout - A more contrasting central zone south of the City of Mexicali, in which an irregular orthogonal design dominates - The eastern and southeastern zone of the MexicaliValley, characterized by larger parcels arranged in a half regular orthogonal layout that looks like the one observed in the Imperial Valley.   Just like other agricultural valleys developed in arid environments in other parts of the world, the MexicaliValley presents a very slow evolution of agrarian morphology in normal conditions.8 Here, one should not lose sight that work is being conducted in a structured environment with different limitations at articulated scales that make the grouping of plots difficult. In such spaces that are characterized by a strong presence of infrastructure in varied modalities of production, land plays a shared role with networks of irrigation and sewage, roads and highways, and storage facilities and warehouses. The articulation of the zonal infrastructure implies the supplementary efforts of actors of territorial reconversion and the grouping of parcels on a local scale. In fact, the grouping of parcels in a continuous perspective, beyond what it generates in costs in the aggregation process, should also include the reorganization of networks and other infrastructures that in most cases are a property foreign to the land of support. The intervention of several public and private actors in the structure of the current agrarian morphology constitutes a limit to the continuous expansion in relation to the importance of the infrastructure, its users, and the conflictive management of their interests. Figure 3 shows that both neighboring valleys have changed their morphological structure since the period prior to the Cárdenas reform. In the Imperial Valley, the changes show a clear tendency toward grouping of parcels within the original layouts. In the MexicaliValley, a timid and dual tendency is seen toward the grouping and partition of some new layouts. Contrary to what is generally admitted, the morphological structure prior to the 1930s in both neighboring valleys does not correspond to what is currently observed in the Imperial Valley. Open and grouped parcels in the current Imperial Valley are modern products following the period of large estates owners, which was in an objective manner incapable of operating its production system in some parcels that were the same size as current lots. In fact, this reveals the inadequacy of the current agricultural expansion and organization with the capability of the production regimes authorized by the technological and business development of the latifundista (large estate owners) period. Figure 3. Changes in Border Agricultural Divided Parcels (1934–1997)

With the passage of time, the structural and organizational changes that take place in the national and regional agriculture on both sides of the border will allow the gradual integration of agrarian morphology in production processes in the medium and long term in the Imperial Valley. By contrast, the MexicaliValley, through an occasional lease, will integrate morphology in a logic of scattered aggregation to comply with spontaneous production cycles.9 The Weight of Socioeconomic History: Change in Continuity   The modernization of Mexican agriculture and its insertion in the market culture are among other objectives of the agrarian reform that began with the 1982 crisis and culminated with the revision of constitutional Article 27 and the institution of new administrative mechanisms and supports for the agricultural sector (Rubio 1995). The restructuring of the agricultural sector, in this respect, publicly proposed the historical bifurcation between an extensive traditional agriculture and a modern one that is inserted in the new data of the economic opening of the country. Endless production units rotate within these two models, whose survival strategy depends on the day-to-day decisions of the new agricultural policy (Toudert 1999). The spirit of the last territorial reform, according to its promoters, consisted of regularizing inheritances in the midst of a growing deposition of the rights of the constitutional owners (see Table 1). Departing from the assumption of land as a transcendent factor in the modern processes of agricultural integration, the central policy bet on the mobility of property in the search for new competitive profiles (de Gotari 1991). The resulting territorial extension has not yet shown a frank tendency toward the concentration of property. Nonetheless, what can be observed is the growing lease of agricultural land.10

Tabla.1.- The new limits of the property starting from the 1992 (11)
Vocación de la tierra individual owners owners asociation
Agricultural - With irrigation - Without irrigation   100 Ha 150 Ha   3750 Ha 7500 Ha
Cattle raising 500 Ha 12500 Ha
Forest 800 Ha 20000 Ha

The reform of Article 27 continued the prohibition of foreign ownership in the border strip of 62 miles (100 kilometers) on land and 31 miles (50 kilometers) on the coast, which formally leaves 11 border irrigation districts out of the reach of foreign investment. The trusteeship, however, which allowed foreign investment in tourism on coastal border property,12 does not seem to follow the same course in agriculture. Foreign agricultural companies show conformity regarding territorial leases in processes characterized by the rapid rotation of capital, utilizing a land market saturated by offers and overwhelming those actors marginalized by the new agricultural policy. At present, the agricultural sector’s concern does not lie in the old fear of foreign territorial concentration, but on how to attract and establish new partners, whoever they might be. The Mexicali Valley is not exempt from this national panorama, although as mentioned earlier, this space was reformed prior to the agrarian reform, offering a territorial overload for the lease in a district characterized by a history of high productivity in the country.13 The technological packets for high yield crops in the Imperial Valley are reproduced in a similar manner to those in Mexicali. In addition, the productive and commercial chains become increasingly more binational through the horizontal integration of Mexican actors. However, here again is the bifurcation between a sector focused on the production of vegetables requiring high labor use and oriented toward the external market, and another sector focused on the highly mechanized production of grains under the shadow of a federal subsidy directed at the internal market. Both of these sectors share the speculative characteristic of the production processes and its continuous rejection of organizational changes that could possibly set a new relationship with the production factors. As in many parts of the world, agriculture in Mexicali presents a conflictive dilemma with respect to the use and management of natural and human resources. The grouping of parcels that could translate into a substantial market for production units in the use of resources such as water, land, and the management of spatially scattered subunits, does not have the luck of taking place in a speculative environment that wastes resources and is accused of conducting informal practices. The relationship of agriculture, the environment, and labor conditions show a field of adjustment that prefers the permanence of competitive profiles in an environment characterized by expansionism at a lower cost and social control over labor conditions (Toudert 1999). After all, why think about territorial grouping if entrepreneurs can lease land at a lower cost and deduct the productive and organizational waste in the maximization of other production factors? Figure 4. An Example of Structural Difficulties for Grouping of Parcels

The relationship between land and production systems, in the event that it may still seem pertinent, does not completely fit with its traditional meaning. Incidentally, there is a habit of thinking about agriculture through its connection to the land at the moment that corporations show a global vision of production systems, an ability to build investment capitals, the mobility of production sites, and flexibility in the management of resources (Bannano et al 1994). The image of a farmer working his land “as a good head of household (father of a family)” belongs in the past; its weak sustenance is perhaps proportional to the loss of the territorial myth. The new modalities of the use of agricultural land are increasingly processed in the notion of the space of mechanisms that are dynamic, instantaneous, and lacking novelties in the landscape.   Conclusion: Morphological Differences—Continuity in the Processes In an environment where land plays a supporting role, it is important to be aware of the continuity of the production processes that take place on both sides of the border to understand the use of agricultural lands and their deeds on the landscape. The reading from the land divided into parcels that constitutes a fast entry toward the systematization of the types of order, shows a risky side at the moment that agrarian morphology does not reflect with enough clarity the nature of the production processes and their degree of integration or modernization. In the MexicaliValley, as in the Imperial Valley, in the event of continuity in production processes under a different logic, the border antagonism is far from being similar to the expression of the agrarian reform. Here, one faces a productive purpose in phase with a similar economic model in an environment adapted to the inherent characteristics of each valley and its insertion in spheres of differentiated influences. Even though the same technological package moves on either side of the border, at times the same actors and investments, the border antagonisms, and the weight of sociopolitical arrangements conform the same objective under two different entrepreneurial sights that are sometimes contradictory. In these new productive environments, land plays only a supporting role after having been for so long an influential actor in agrarian mechanisms. Is this the end of the land myth at the U.S.-Mexican border?   Endnotes 1. Map of the Mexicali-Calexico area and their agricultural periphery in panchromatic mode (1:50,000) by the Spot Image Corporation in 1991. 2. Referring to President Porfirio Díaz (1876–1911) and his border colonization project initiated in 1880. 3. Confirms the observation of aerial photographs taken in 1934, available at the Department of Topography of the Universidad Autónoma de Baja California. 4. With the creation of 38 ejidos (community-owned properties) (97,120 hectares) in 1937 and the nationalization of the Mexicali-San Luis Río Colorado irrigation district. 5. The agrarian reform was codified by the Act of 1915 and later by the Agrarian Code of 1934. 6. SAM (Sistema Alimentario Mexicano / Mexican Food System), PRONAL (Programa Nacional Alimentario / National Food Program), PRONADRI (Programa Nacional de Desarrollo Rural Integral / National Program for Integrated Rural Development). 7. The revision of Article 27 of the Constitution was adopted in December 1991 and published one month later; the new agrarian act was approved in February 1992. 8. This observation is also valid for the Imperial Valley, where a setting of the agrarian morphology can also be observed, although mobility is registered in the ownership average at the rate of 1.85 percent annually between 1982 and 1992; the same mobility can imply a decline, as is the case in Yuma, where the ownership average decreased to 4.79 percent annually for the same period. 9. This is a production process similar to the older traditional units in the scattering of its production units in the Mediterranean basin, in which the fieldworkers operated on several distant parcels. 10. Until 1996, according to data from the Secretariat of Agricultural Promotion of the state government, only 34 associations were established with 811 members for the management of 27,889 hectares. 11. Synthesis of Article 27, Section XV of the political constitution of the Republic of Mexico. 12. Such is the case as long as foreigners are considered nationals with respect to their property, thus renouncing their right to invoke protection from their respective governments. 13. In an internal study in 1992 to determine the impact of the new agrarian law, SARH determined that leases cover approximately 35 percent of the agricultural surfaces in the state of Baja California. It also estimated leases during the 1996–1997 agricultural cycle to be 40 percent of the parcels in the Mexicali Valley, based on requests from PROCAMPO (Programa de Apoyos Directos al Campo / Direct Support Program for the Field).   References   Bannano, et al. 1994. From Colombus to ConAgra: The Globalization of Agriculture and Food. Lawrence: University Press of Kansas.   De Gotari, C.S. 1991. “Diez puntos para la libertad y justicia en el campo mexicano.” Comercio exterior 41 (11).   Imperial Irrigation District (IID). 1982. Historical Summary. Imperial Valley: Imperial Irrigation District.   Imperial Irrigation District (IID). 1987. 75th Anniversary Celebration. Imperial Valley: Imperial Irrigation District.   Portais, M. 1992. “La vallée de Mexicali.” Cahier des Sciences Humaines 28 (4).   Romano, C.J. 1990. “Origine y desarrollo de dos áreas de reigo.” Cuadernos del COLEF. Tijuana: El Colegio de la Frontera Norte.   Rubio, B. 1995. “Por un nuevo trato en el campo mexicano.” In El campo mexicano en el umbral del siglo XXI, A. Encinas, ed. México, D.F.: Ed Espasa.   Sánchez, O.R. 1992. “El distrito de riego del río Colorado.” Calafia 7 (1).   Sánchez, O.R. 1994. “La instauración del estado de Baja California.” Calafia 8 (1).   Stamatis, M.M. 1993. “Los contratos de producción en el noroeste de México: el valle de Mexicali a fines de la década de los ochenta.” Estudios fronterizos 30.   Toudert, D. 1995. Les changements agricoles de la vallée de Mexicali. Paris: Institut des Hautes Etudes d’Amérique Latine, Université de Paris 3.   Toudert, D. 1997. “Contribución al debate sobre la vocación espacial rural: un enfoque sobre el modelo residencial ejidal del valle de Mexicali.” Estudios fronterizos 39.   Toudert, D. 1999. “La nouvelle dynamique des espaces agricoles irrigués en Basse Californie (Mexique): Relance et intégration dans le cadre de la nouvelle politique agricole (1987–1998).” Ph.D. diss., Institut des Hautes Etudes d'Amérique Latine, Université de Paris 3, France.   Zavala, J.A. 1992. “La agroexportación en el crecimiento del valle de Mexicali.” Master’s thesis, El Colegio de la Frontera Norte, Tijuana, Mexico.

Ciberespacio, Territorios y Territorialidad en México

En esta pagina pueden encontrar las publicaciones del Dr. Djamel Toudert relacionadas con el proyecto: “Ciberespacio, Territorios y Territorialidad en México”. Estas publicaciones son disponibles en español y usando la traducción con software esperamos poder ofertar una forma de leer estos trabajos en otros idiomas. De antemano, estaremos esperando recibir sus opiniones y sugerencias, por favor, enviarnos un e-mail de cortesía avisándonos del uso de estas contribuciones en sus publicaciones.



2007. D. Toudert. Algunos rasgos y particularidades de la polarización territorial de la producción de contenidos Web en México. Revista Economía, Sociedad y Territorio del Colegio Mexiquense. vol. VI. num. 23. pp: 579-611.
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2005. D. Toudert. La World Wide Web mexicana: Producción y productividad en el marco de la visión territorial regional y urbana. Ponencia presentada en el marco del 1er. Encuentro de la región norte de la Asociación Mexicana de Estudios del Trabajo (AMET): “El futuro del trabajo en México”. Tecnológico de Monterrey. Monterrey. Nuevo León. 11/10/2005.
Ponencia en extenso en curso de publicación de un proyecto de libro de las actas del encuentro.
Disponible a la lectura en la Web (Español): Leer en español

Disponible a la lectura en ingles Read the contribution in English : Read the contribution

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D. Toudert y G. D. Buzai. 2004. Cibergeografía. Tecnología de la Información y las Comunicaciones (TIC) en las Nuevas Visiones Espaciales. Editorial de la Universidada Autónoma de Baja California. ISBN 970-735-005-9.
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2004. D. Toudert. La accesibilidad a la World Wide Web: Hacia un enfoque de evaluación integral. II Congreso del Observatorio de la Cibersociedad. 01-14 de noviembre de 2004. En el ciberespacio. Ponencia en extenso.
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2003. D. Toudert. " Contribución al estudio de la articulación entre telefonía fija doméstica y marginación socioterritorial en las localidades de los estados de la Frontera Norte Mexicana". Frontera Norte. Revista del Colegio de la Frontera Norte. Vol. 15, num 30. pp: 7-32.

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2003. D. Toudert. " La integración telemática en México: Algunos límites y contradicciones de la planeación centralizada". Región y Sociedad. Revista del Colegio de Sonora. num.volXV:28, pp:225-232.

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2001. D. Toudert. " Los portales de las televisoras en México: Que continua el espectáculo en el ciberespacio". Revista del Observatorio de la Cibersociedad. num. 2.

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2000. D. Toudert. " La WWW en la frontera Norte mexicana: Hacia el descubrimiento de una dimension desconocida". Revista Frontera Norte. Colegio de la Frontera Norte. Vol 13. num. 24.pp: 7-33.

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