Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ldr.2426 |
Spatial Assessment of Land Degradation Risk for the Okavango River Catchment, Southern Africa | |
Weinzierl, Thomas; Wehberg, Jan; Boehner, Juergen; Conrad, Olaf | |
通讯作者 | Weinzierl, Thomas |
来源期刊 | LAND DEGRADATION & DEVELOPMENT
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ISSN | 1085-3278 |
EISSN | 1099-145X |
出版年 | 2016 |
卷号 | 27期号:2页码:281-294 |
英文摘要 | The Okavango catchment in southern Africa is subject to environmental as well as socio-economic transformation processes such as population growth and climate change. The degradation of soil and vegetation by deforestation and overgrazing is one of the downsides of this development, reducing the capacity of the land to provide ecosystem functions and services. In this study, climate simulations are brought together with secondary socioeconomic, pedologic and remote-sensing data in a GIS-based assessment of the factors commonly associated with land degradation risk. A high resolution overview is provided for decision-makers and stakeholders in the region by identifying priority intervention areas where a long-term decline in ecosystem function and land productivity is most likely to occur. The approach combines 19 risk factors into seven individual ratings for topography, landcover, soil, demography, infrastructure, livestock pressure and climate. These ratings are then weighted and combined into an integrated degradation risk index (DRI). The results show that the land degradation risk is quite heterogeneously distributed in the study area and caused by different factors. Three hot-spots are identified and compared, one of which is in the far northwestern part of the catchment, one around the local center Rundu and one on the outskirts of the Okavango Delta. We conclude that the approach is suitable to give an overview on degradation risk in the study area, although the classification process is a crucial procedure that should be standardized for further research. Copyright (c) 2015 John Wiley & Sons, Ltd. |
英文关键词 | climate change land degradation risk assessment GIS Okavango region |
类型 | Article |
语种 | 英语 |
国家 | Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000370151700018 |
WOS关键词 | SOIL-EROSION ; CLIMATE ; BASIN ; DESERTIFICATION ; SCENARIOS ; FRAMEWORK ; NAMIBIA ; DELTA ; GIS |
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/2XILL650/194926 |
作者单位 | Univ Hamburg, Dept Geog, Bundesstr 55, D-20146 Hamburg, Germany |
推荐引用方式 GB/T 7714 | Weinzierl, Thomas,Wehberg, Jan,Boehner, Juergen,et al. Spatial Assessment of Land Degradation Risk for the Okavango River Catchment, Southern Africa[J],2016,27(2):281-294. |
APA | Weinzierl, Thomas,Wehberg, Jan,Boehner, Juergen,&Conrad, Olaf.(2016).Spatial Assessment of Land Degradation Risk for the Okavango River Catchment, Southern Africa.LAND DEGRADATION & DEVELOPMENT,27(2),281-294. |
MLA | Weinzierl, Thomas,et al."Spatial Assessment of Land Degradation Risk for the Okavango River Catchment, Southern Africa".LAND DEGRADATION & DEVELOPMENT 27.2(2016):281-294. |
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文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Spatial Assessment o(8474KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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