Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.resconrec.2008.11.007 |
The impacts of watershed management on land use and land cover dynamics in Eastern Tigray (Ethiopia) | |
Alemayehu, Fikir1,2; Taha, Nurhussen2; Nyssen, Jan3; Girma, Atkilt2; Zenebe, Amanuel2; Behailu, Mintesinot2; Deckers, Seppe4; Poesen, Jean4 | |
通讯作者 | Alemayehu, Fikir |
来源期刊 | RESOURCES CONSERVATION AND RECYCLING
![]() |
ISSN | 0921-3449 |
出版年 | 2009 |
卷号 | 53期号:4页码:192-198 |
英文摘要 | Integrated watershed management (IWSM) was implemented to address issues of poverty and land resource degradation in the 14,500 ha upper Agula watershed, in semi-arid Eastern Tigray (Ethiopia), an area known for poverty and resource degradation caused by natural and man-made calamities. The purpose of this study was to assess the impact of IWSM and determine the land use and cover dynamics that it has induced. The change in land use and cover was assessed by integrating remote sensing and geographic information systems (GIS). Two sets of aerial photographs (taken in 1965 and 1994 at scale of 1:50,000) and Landsat ETM+ image (taken in 2000 with 30 m resolution) were used to produce the land use/land cover map and assess land use change. The results reveal significant modification and conversion of land use and cover of the watershed over the last four decades (1965-2005). A significant portion of the watershed was continuously under intensively cultivated (tainted) land. The area under irrigation increased from 7 ha to 222.4 ha post-intervention. The area under dense forest increased from 32.4 ha to 98 ha. The study further shows that IWSM decreased soil erosion. increased soil moisture, reduced sedimentation and run off, set the scene for a number of positive knock-on effects Such as stabilization of gullies and river banks, rehabilitation of degraded lands. IWSM also resulted in increased recharge in the subsurface water. This study reconfirms the importance of IWSM as a key to improve the land cover of watersheds, as a contribution to poverty alleviation and sustainable livelihood. (C) 2008 Elsevier B.V. All rights reserved. |
英文关键词 | Integrated watershed management Land use and cover change Remote sensing Geographic information system (GIS) Soil and water conservation Catchment management |
类型 | Article |
语种 | 英语 |
国家 | Ethiopia ; Belgium |
收录类别 | SCI-E |
WOS记录号 | WOS:000264368300003 |
WOS关键词 | HIGHLANDS |
WOS类目 | Engineering, Environmental ; Environmental Sciences |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/162449 |
作者单位 | 1.Melca Mehaber, Addis Ababa, Ethiopia; 2.Mekelle Univ, Dept Land Resource Management & Environm Protect, Mekelle, Ethiopia; 3.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium; 4.Katholieke Univ Leuven, Dept Earth & Environm Sci, B-3001 Louvain, Belgium |
推荐引用方式 GB/T 7714 | Alemayehu, Fikir,Taha, Nurhussen,Nyssen, Jan,et al. The impacts of watershed management on land use and land cover dynamics in Eastern Tigray (Ethiopia)[J],2009,53(4):192-198. |
APA | Alemayehu, Fikir.,Taha, Nurhussen.,Nyssen, Jan.,Girma, Atkilt.,Zenebe, Amanuel.,...&Poesen, Jean.(2009).The impacts of watershed management on land use and land cover dynamics in Eastern Tigray (Ethiopia).RESOURCES CONSERVATION AND RECYCLING,53(4),192-198. |
MLA | Alemayehu, Fikir,et al."The impacts of watershed management on land use and land cover dynamics in Eastern Tigray (Ethiopia)".RESOURCES CONSERVATION AND RECYCLING 53.4(2009):192-198. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。