Login user name Forgotten password? No sort Issue date descending, Date of update descending, Date of creation descending, Number of collection descending Recently released Number in collection Relevance Author Other sorts Sorted by Issue date descending, Date of update descending, Date of creation descending, Number of collection descending Add the result to your favourites Refine your search Improving small farmers' adaptive capacity in semi-arid regions Government of the United Kingdom , Improving small farmers' adaptive capacity in semi-arid regions.
No review, please log in to add yours! Adaptation to climate change in semi-arid environments: experience and lessons from Mozambique. Our focus is twofold: tackling the underlying causes of land degradation, and strengthening the capacity of dryland populations Global Drylands: a UN system-wide response. CAgM Report, Validation of information requirements on livestock and pasture production in arid and semi-arid regions World Meteorological Organization WMO ; Lebed L.
Definitions of aridity relate to the water balance concept. This is a relationship that exists between the input of water in precipitation P , the losses arising from evaporation and transpiration evapotranspiration E t , and any changes that may occur in storage soil moisture, groundwater, etc.
In arid regions there is an overall deficit in water balance over a year, and the size of that deficit determines the degree of aridity. The actual amount of evapotranspiration AE t that occurs varies according to whether there is available water Skip to main content Skip to table of contents. This service is more advanced with JavaScript available.
Encyclopedia of Paleoclimatology and Ancient Environments Edition. Editors: Vivien Gornitz. Contents Search. Arid Climates and Indicators. Authors Authors and affiliations Andrew Goudie.
How to cite. The nature of aridity Arid lands cover about a third of the Earth's land surface and occur in every continent including Antarctica Goudie, This is a preview of subscription content, log in to check access.
Arbogast, A. Stratigraphic evidence for late-Holocene eolian sand mobilisation and soil formation in south-central Kansas, USA. Arid Environ. CrossRef Google Scholar. Avery, D. Micromammals as palaeoenvironmental indicators and an interpretation of the Late Quaternary in the Southern Cape Province, South Africa.
Google Scholar. Benson, L. Quaternary Res. Bowler, J. Clay dunes: Their occurrence, formation and environmental significance. Brookes, I. Possible Miocene catastrophic flooding in Egypt's Western Desert. Earth Sci. Busche, D. Die Zentrale Sahara. Gotha: Justus Perthes Verlag. Clayton, J. Broad synchrony of a late-glacial advance and the highstand of palaeolake Tauca in the Bolivian Altiplano.
Quaternary Sci. Arid environments are diverse in terms of soil, climate, water balance, flora, fauna, and human activities, and therefore there is no working definition to define an arid region other than aridity. Hyper-arid zones have an index of less than 0. An arid climate is known for being hot and dry. About a third of the Earth is covered by arid climate most of which lie 30 degrees north and south of the Equator.
Despite the harsh conditions animals and plants have developed adaptive methods to survive the environment. Most arid regions receive less than 10 inches of rainfall throughout the year.
Fogel, M. Precipitation in the desert, in Water in Desert Ecosystems, D. Gentilli, J. Australian Climates. Perth: University of Western Australia. Hare, F. Kendrew, W. Climates of the Continents.
Oxford: Clarendon Press. Grundriss der Klimakunde, 2nd ed. Berlin: Walter de Gruyter. Leighly, J. Dry climates, their nature and distribution, in Desert Research, Proc. International Symposium, Jerusalem. Research Council of Israel, Spec. Loewe, F. Duststorms in Australia, Bull.
Canberra, Australia: Meteorological Branch. Logan, R. National Research Council Pub. Washington, D. McGinnies, W. Goldman, and P.
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