Knowledge Resource Center for Ecological Environment in Arid Area
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
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ISSN | 1532-4982 |
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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