Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.3390/cli8030043 |
| The Future of Semi-Arid Regions: A Weak Fabric Unravels | |
| Scholes, Robert J. | |
| 通讯作者 | Scholes, RJ |
| 来源期刊 | CLIMATE
 |
| EISSN | 2225-1154 |
| 出版年 | 2020 |
| 卷号 | 8期号:3 |
| 英文摘要 | The regions of the world where average precipitation is between one fifth and half of the potential plant water demand are termed 'semi-arid'. They make up 15.2% of the global land surface, and the approximately 1.1 billion people who live there are among the world's poorest. The inter-annual variability of rainfall in semi-arid regions is exceptionally high, due to intrinsic features of the global atmospheric circulation. The observed and projected climate trends for most semi-arid regions indicate warming at rates above the global mean rate over land, increasing evaporative demand, and reduced and more variable rainfall. Historically, the ecosystems and people coped with the challenges of semi-arid climates using a range of strategies that are now less viable. Semi-arid ecosystems are by definition water limited, generally only suitable for extensive pastoralism and opportunistic cropping, unless irrigation supplementation is available. The characteristics of dryland plant production in semi-arid ecosystems, as they interact with climate change and human systems, provide a conceptual framework for why land degradation is so conspicuous in semi-arid regions. The coupled social-ecological failures are contagious, both within the landscape and at regional and global scales. Thus, semi-arid lands are a likely flashpoint for Earth system changes in the 21st century. |
| 英文关键词 | vulnerability contagion climate change land degradation |
| 类型 | Review |
| 语种 | 英语 |
| 开放获取类型 | DOAJ Gold |
| 收录类别 | ESCI |
| WOS记录号 | WOS:000525036500007 |
| WOS关键词 | CLIMATE-CHANGE ; LAND DEGRADATION ; DROUGHT ; VARIABILITY ; ECOSYSTEM ; DYNAMICS ; BIODIVERSITY ; SEASONALITY ; RESPONSES ; PLATEAU |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/334305 |
| 作者单位 | [Scholes, Robert J.] Univ Witwatersrand, Global Change Inst, ZA-2050 Johannesburg, South Africa |
| 推荐引用方式 GB/T 7714 | Scholes, Robert J.. The Future of Semi-Arid Regions: A Weak Fabric Unravels[J],2020,8(3). |
| APA | Scholes, Robert J..(2020).The Future of Semi-Arid Regions: A Weak Fabric Unravels.CLIMATE,8(3). |
| MLA | Scholes, Robert J.."The Future of Semi-Arid Regions: A Weak Fabric Unravels".CLIMATE 8.3(2020). |
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