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Author: Hilton Kramer Publisher: Routledge ISBN: 135148589X Category : Science Languages : en Pages : 175
Book Description
The hot and temperate deserts and their marginal steppe lands comprise one-third of the land surface of the world and are an increasingly critical area for the economic wellbeing of world populations. The remarkable mechanisms of floral, faunal, and human adaptation to the distinct and difficult environment of these arid zones, as well as the potential of modern technology for facilitating adaptation, are described and explained by Walton in the light of our most recent knowledge of the phenomena and processes involved.Beginning with a clarification of the definitions of arid and semi-arid regions and with the delineation of techniques for measuring the degree of aridity in these areas, the author shows that there is wide variation among the arid zones in landscape and climate and that there are numerous local and microclimates within any single arid region. The life cycles of the plants and animals of the arid zones are described and the water resources, including problems of salinity, mineral contamination, and the construction of reservoirs, are examined. Extensive treatment is given to potential agricultural adaptations and to pastoralism as the most widespread response to dry land. A final chapter summarizes attempts at adaptation to prevailing drought and discusses the kinds of future development that the author deems most likely in arid zones.Throughout the book emphasis is placed on specific, detailed analysis, with adequate tables and formulas for in-depth understanding of particular aspects of aridity. Examples from both Old and New Worlds are used to demonstrate the spheres in which progress is being made and to show the mistakes in past and present land use in arid areas. An essential supplement for courses in physical geography, the book will be useful in many area studies and in studies of economic development.
Author: Hilton Kramer Publisher: Routledge ISBN: 135148589X Category : Science Languages : en Pages : 175
Book Description
The hot and temperate deserts and their marginal steppe lands comprise one-third of the land surface of the world and are an increasingly critical area for the economic wellbeing of world populations. The remarkable mechanisms of floral, faunal, and human adaptation to the distinct and difficult environment of these arid zones, as well as the potential of modern technology for facilitating adaptation, are described and explained by Walton in the light of our most recent knowledge of the phenomena and processes involved.Beginning with a clarification of the definitions of arid and semi-arid regions and with the delineation of techniques for measuring the degree of aridity in these areas, the author shows that there is wide variation among the arid zones in landscape and climate and that there are numerous local and microclimates within any single arid region. The life cycles of the plants and animals of the arid zones are described and the water resources, including problems of salinity, mineral contamination, and the construction of reservoirs, are examined. Extensive treatment is given to potential agricultural adaptations and to pastoralism as the most widespread response to dry land. A final chapter summarizes attempts at adaptation to prevailing drought and discusses the kinds of future development that the author deems most likely in arid zones.Throughout the book emphasis is placed on specific, detailed analysis, with adequate tables and formulas for in-depth understanding of particular aspects of aridity. Examples from both Old and New Worlds are used to demonstrate the spheres in which progress is being made and to show the mistakes in past and present land use in arid areas. An essential supplement for courses in physical geography, the book will be useful in many area studies and in studies of economic development.
Author: Clive Agnew Publisher: Taylor & Francis ISBN: 1040006248 Category : Science Languages : en Pages : 348
Book Description
Originally published in 1992, this book dispels some of the myths that surround water resource problems of arid lands and the notion that there are simple ‘once and for all’ solutions. Population growth, industrialization, environmental mismanagement and land degradation have led to droughts, poverty and famine with the result that the need for space, food and key natural resources such as water has become the most critical issue in global development. Nowhere is this crisis more apparent than in arid lands, where water resources provide the key to economic and environmental development. The authors argue that as the arid land environment is highly variable the key to success is flexibility. The book is divided into four sections, dealing with the geography of the arid realm; the water resource problems they face: the methods available for enhancing water supplies and finally, management of this resource. The book will be of use to undergraduate and postgraduate student and for those actively engaged in the development of arid land water resources.
Author: E. Barton Worthington Publisher: Elsevier ISBN: 148315971X Category : Business & Economics Languages : en Pages : 480
Book Description
Arid Land Irrigation in Developing Countries: Environmental Problems and Effects covers the proceedings of the International Symposium on Arid Land Irrigation, held in Alexandria, Egypt on February 16-21 1976. This book is organized into eight sections encompassing 46 chapters. The opening section deals first with the benefits of arid land irrigation and the effective use of water in irrigated agriculture. This section also tackles the public health and socio-economic impacts of irrigation, as well as the planning and managing of irrigation and drainage systems. The next section discusses the results of some case studies on arid land irrigation, such as in districts in Mexico, Iran, and Egypt. Other sections explore the influence of irrigation on changes in hydrological processes and cycle, soil fertility, water quality, and biological balances. The closing sections consider the human problems in irrigation areas, with an emphasis on the problem of schistosomiasis and malaria. These sections also look into the viewpoints of specialist agencies of the United Nations on arid land irrigation. This book will be of value to agriculturists, economists, and researchers.
Author: Diana K. Davis Publisher: MIT Press ISBN: 0262333546 Category : Nature Languages : en Pages : 302
Book Description
An argument that the perception of arid lands as wastelands is politically motivated and that these landscapes are variable, biodiverse ecosystems, whose inhabitants must be empowered. Deserts are commonly imagined as barren, defiled, worthless places, wastelands in need of development. This understanding has fueled extensive anti-desertification efforts—a multimillion-dollar global campaign driven by perceptions of a looming crisis. In this book, Diana Davis argues that estimates of desertification have been significantly exaggerated and that deserts and drylands—which constitute about 41% of the earth's landmass—are actually resilient and biodiverse environments in which a great many indigenous people have long lived sustainably. Meanwhile, contemporary arid lands development programs and anti-desertification efforts have met with little success. As Davis explains, these environments are not governed by the equilibrium ecological dynamics that apply in most other regions. Davis shows that our notion of the arid lands as wastelands derives largely from politically motivated Anglo-European colonial assumptions that these regions had been laid waste by “traditional” uses of the land. Unfortunately, such assumptions still frequently inform policy. Drawing on political ecology and environmental history, Davis traces changes in our understanding of deserts, from the benign views of the classical era to Christian associations of the desert with sinful activities to later (neo)colonial assumptions of destruction. She further explains how our thinking about deserts is problematically related to our conceptions of forests and desiccation. Davis concludes that a new understanding of the arid lands as healthy, natural, but variable ecosystems that do not necessarily need improvement or development will facilitate a more sustainable future for the world's magnificent drylands.
Author: Hilton Kramer
Author: Hilton Kramer
Author: Yair Mundlak
Author: Paris Symposium on the Problems of the Arid Zone, 1960
Author: Kenneth Walton
Author: Unesco
Author: 
Author: Clive Agnew
Author: E. Barton Worthington
Author: 1960 Paris symposium on the problems of the arid zone
Author: Diana K. Davis