Arid
Man-made deserts: Desertization processes and threats
Le Houerou, HN
通讯作者Le Houerou, HN
来源期刊ARID LAND RESEARCH AND MANAGEMENT
ISSN1532-4982
出版年2002
卷号16期号:1页码:1-36
英文摘要

Desertization is defined as tire irreversible extension of desert land forms and landscapes to areas where they did not occur in a recent past. Such extension does not result from a would-be increasing aridity as there is no evidence of any global long-torn trends in rainfall in arid lands since tire period of instrumental record (ca. 150 years). The 0.5degreesC of global temperature increase over the past 100 years remains well within the range of historical fluctuations. The creation of man-made deserts is actually the result of long-lasting mismanagement of natural resources under the pressure of excessive human and livestock populations. Such land abuse may drive ecosystems beyond their resilience potential for recovery. The causes and mechanisms of arid land degradation pertain to direct and indirect activities, processes, and phenomena, which are not necessarily linked to aridity or drought. Causes, severity, and extent of desertization are quantified from various sources. The potential for biological recovery is analyzed and the ways and means to achieve rehabilitation assessed. The conclusion addresses the issue of the future of desertization under the additional threat of an increased aridity that might occur assuming a possible global temperature increase of tire planet, triggered by atmospheric pollution. It tries to quantify the possible increase of aridity under various scenarios.


英文关键词arid lands bioclimatology climate change desertification ecosystem functioning land degradation land management land rehabilitation primary productivity xeric vegetation
类型Review
语种英语
收录类别SCI-E
WOS记录号WOS:000173868200001
WOS关键词NORTH-AFRICA ; WEST ASIA ; SAHARA ; LAND ; CLIMATE
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/142083
推荐引用方式
GB/T 7714
Le Houerou, HN. Man-made deserts: Desertization processes and threats[J],2002,16(1):1-36.
APA Le Houerou, HN.(2002).Man-made deserts: Desertization processes and threats.ARID LAND RESEARCH AND MANAGEMENT,16(1),1-36.
MLA Le Houerou, HN."Man-made deserts: Desertization processes and threats".ARID LAND RESEARCH AND MANAGEMENT 16.1(2002):1-36.
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