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Author: Sherburne Friend Cook
Publisher: Berkeley, U. of Calif. P
ISBN:
Category : Erosion
Languages : en
Pages : 700
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Book Description
Examines the relationship between population and soil erosion in areas of Central Mexico.
Author: Sherburne Friend Cook
Publisher: Berkeley, U. of Calif. P
ISBN:
Category : Erosion
Languages : en
Pages : 700
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Book Description
Examines the relationship between population and soil erosion in areas of Central Mexico.
Author: Sherburne Friend Cook
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Book Description
Author: Pavel Krasilnikov
Publisher: Springer Science & Business Media
ISBN: 9400756607
Category : Nature
Languages : en
Pages : 188
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Book Description
Mexico is an extensive country with an extremely complex mosaic of landscapes. The soils of Mexico have still not been completely studied, and there are few publications available on this subject. This book provides a state-of-the-art view on Mexican soils, their geographical distribution, their use and degradation. This is a first attempt to give a systematized characteristic of the soil resources of Mexico. Land resources of the second-biggest economy in Latin America are critical for its sustainable development, and a demand for adequate soil information is high. The information contained within can be used for any soil-related research done in Mexico and in neighboring countries. The book includes detailed characteristics of soils of all the physiographic regions of Mexico with maps, photos and explanatory schemes. The book is based on the experiences of the authors in research and soil survey, as well as on the existent, mainly ‘grey’ literature on Mexican soils. The book is recommended for researchers and university readers, students of all levels and decision-makers, working in the area of soil science, environmental issues, Earth sciences, land management and nature conservation.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 876
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Book Description
Author: Georgina H. Endfield
Publisher: John Wiley & Sons
ISBN: 1444399330
Category : Science
Languages : en
Pages : 295
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Book Description
By considering three case study regions in Mexico during the Colonial era, Climate and Society in Colonial Mexico: A Study in Vulnerability examines the complex interrelationship between climate and society and its contemporary implications. Provides unique insights on climate and society by capitalizing on Mexico’s rich colonial archives Offers a unique approach by combining geographical and historic perspectives in order to comprehend contemporary concerns over climate change Considers three case study regions in Mexico with very different cultural, economic, and environmental characteristics
Author: David R. Montgomery
Publisher: Univ of California Press
ISBN: 0520272900
Category : Nature
Languages : en
Pages : 304
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Book Description
An engaging natural and cultural history of soil that sweeps from ancient civilisations to modern times, 'Dirt' explores the compelling idea that we are - and have long been - using up Earth's soil.
Author:
Publisher: American Philosophical Society
ISBN: 9781422371404
Category :
Languages : en
Pages : 110
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Book Description
Author: Murdo J. MacLeod
Publisher: University of Texas Press
ISBN: 0292788258
Category : History
Languages : en
Pages : 622
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Book Description
The seventeenth century has been characterized as "Latin America's forgotten century." This landmark work, originally published in 1973, attempted to fill the vacuum in knowledge by providing an account of the first great colonial cycle in Spanish Central America. The colonial Spanish society of the sixteenth century was very different from that described in the eighteenth century. What happened in the Latin American colonies between the first conquests, the seizure of long-accumulated Indian wealth, the first silver booms, and the period of modern raw material supply? How did Latin America move from one stage to the other? What were these intermediate economic stages, and what effect did they have on the peoples living in Latin America? These questions continue to resonate in Latin American studies today, making this updated edition of Murdo J. MacLeod's original work more relevant than ever. Colonial Central America was a large, populous, and always strategically significant stretch of land. With the Yucatán, it was home of the Maya, one of the great pre-Columbian cultures. MacLeod examines the long-term process it underwent of relative prosperity, depression, and then recovery, citing comparative sources on Europe to describe Central America's great economic, demographic, and social cycles. With an updated historiographical and bibliographical introduction, this fascinating study should appeal to historians, anthropologists, and all who are interested in the colonial experience of Latin America.
Author: Sherburne Friend Cook
Publisher: Berkeley, U. of Calif. P
ISBN:
Category : Mexico
Languages : en
Pages : 746
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Book Description
Author: Demetrio Salvador Fernandez-Reynoso
Publisher:
ISBN:
Category :
Languages : en
Pages : 434
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Book Description
In Mexico, corn (Zea mays L.) is the most important crop (59% of its agriculture land) and the primary source of sediment yield. This study looks for alternatives to maintain corn productivity by means of sustainable soil and water conservation practices at central Mexico. In order to understand broad tendencies between soil erosion and crop productivity in the region, the EPIC (Erosion Productivity Impact Calculator) model was applied in the Texcoco's district as follows:1) Calibrate the model using 352 experimental corn plots established between 1972 and 1992 in 36 rural communities. 2) Validate the model on a spatial basis, using GIS tools, by means of historic corn yields. 3) Identify the most vulnerable areas where corn productivity is being affected by soil erosion. 4) Analyze the relationship between soil erosion and crop productivity, over a 100 years of simulation, comparing the Current Management (CM) and the Recommended Management (RM) by governmental institutions. 5) Evaluate the most feasible soil and water conservation practices for the region. From the calibration process, it was concluded that the EPIC model, under a wide range of environmental conditions, simulates very good corn yield (r2 between 0.88 and 0.90), annual runoff (r2=0.98), and annual sediment production (r2=0.96). Baseon the official environmental inputs available in the region, the EPIC model can assess only a moderately strong relationship (r2=0.58) between the official historical crop records and the simulated ones.Comparison between CM and RM shows that the average crop yield in the region can be increased by 32.6% if RM were followed. Under the CM, the loss of soil fertility in the district reduces corn productivity by 3% over a hundred years. At least 50.0% of the region's agricultural area needs soil conservation practices, mainly on areas with slopes over 5%. If it is decided to grow corn under conventional till in such areas it is recommended to construct bench terraces in order to maintain soil erosion below 20 t/ha/yr. Corn under no till, besides control erosion, can also increase grain productivity by at least 40% (0.6 t/ha) by combining contouring, mulching, and manures.
