by Secretariat of the World Meteorological Organization in Geneva, Switzerland .
Written in English
|Series||Technical note / World Meteorological Organization ;, no. 186, WMO ;, no. 662, Technical note (World Meteorological Organization) ;, no. 186., WMO (Series) ;, no. 662.|
|Contributions||World Meteorological Organization.|
|LC Classifications||QC851 .W6445 no. 662|
|The Physical Object|
|Pagination||x, 148 p. :|
|Number of Pages||148|
|LC Control Number||90101208|
Hydrology and Water Resources Management in Arid, Semi-Arid, and Tropical Regions is an essential research publication that seeks to improve scientific understanding and sharing of data in hydrology and integrated water resources management of arid, semi-arid, and tropical regions in order to enhance water governance and alleviate reduction in. Arid Land Research and Management. Impact Factor. Search in: Advanced search. Submit an article. New content alerts RSS. Subscribe Comparison of grass and soil conditions around water points in different land use systems in semi-arid South African rangelands and implications for management and current rangeland paradigms. Simanga. Definitions • Drylands cover approximately 40% of the world’s land area, and support two billion people, 90% of whom live in developing countries. These areas receive relatively low overall amounts of precipitation in the form of rainfall or snow (UN, ; MEA ). Semiarid regions are a subtype of dry land with an aridity index (i.e., ratio of total annual precipitation to potential evapotranspiration) between and (Lal, ).Soils in semiarid regions have frequently been degraded by historical land use, resulting in low soil organic carbon (SOC) content and poor structure.
management in arid and semi-arid areas FAO IRRIGATION AND DRAINAGE PAPER 61 by Kenneth K. Tanji Hydrology Program Department of Land, Air and Water Resources University of California Davis, United States of America Neeltje C. Kielen Water Resources, Development and Management Service FAO Land and Water Development Division YE1.p65 1 12/2/02 Cited by: Deserts (arid lands /drylands) constitute about 35% of the land areas of the world and are typically characterized by rainfall scarcity, higher temperatures and evapotranspiration, lower humidity, and a general paucity of vegetation cover.A unique combination of atmospheric, geologic, and geomorphic conditions is responsible for the formation of deserts primarily between the . 8 CHAPTER 1 ~ Drylands, people and land use FIGURE 2 Major soil types of drylands Source: World Soil Resources Map. FAO/EC/ISRIC, Soils of Footslopes (6%) Regosols Soils of the Lowlands (5%) Fluvisols, Gleysols, Planosols Cracking Clay Soils (5%) Vertisols Saline and Sodic Soils (4%) Solonetz, Solonchaks, Salt Flats Slightly Weathered Soils (4%) Cambisols Very File Size: 1MB. Groundwater Modelling in Arid and Semi-Arid Areas is valuable for researchers, practitioners in developed and developing countries, and graduate students in hydrology, hydrogeology, water resources management, environmental engineering and geography. Contents. Preface H. S. Wheater, S. A. Mathias and X. Li Range: £ - £
Semi-arid ecosystems differ from true arid areas in structure and in the rate and regulation of ecosystem processes. We differentiate between these two, and highlight cases of conversion from semi-arid to arid lands (desertification; Verstraete and Schwartz ). In the semi-arid zone, rainfed farming of annual crops has been practiced on a small scale and mostly in a nomadic way, where before the rainy season the land was cleared of the natural vegetation by cutting and burning, the land was used a few seasons and then left to restore its natural vegetation cover and with it the fertility of the Size: 1MB. 1. Modelling hydrological processes in arid and semi-arid areas - an introduction H. Wheater 2. Global precipitation estimation from satellite imagery using artificial neural networks S. Sorooshian, K.-L. Hsu, B. Imam and Y. Hong 3. Modelling semi-arid and arid hydrology and water resources - the southern Africa experience D. A. Hughes Range: £ - £ Arid and semi-arid regions face major challenges in the management of scarce freshwater resources under pressures of population, economic development, climate change, pollution and over-abstraction. Groundwater is commonly the most important water resource in these areas. Groundwater models are widely used globally to understand groundwater systems and to .