Arid
DOI10.1080/02723646.2013.832098
Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid Northern Ethiopia
Taye, Gebeyehu1; Poesen, Jean2; Van Wesemael, Bas3; Vanmaercke, Matthias2,4; Teka, Daniel1; Deckers, Jozef2; Goosse, Tom2; Maetens, Willem2; Nyssen, Jan5; Hallet, Vincent6; Haregeweyn, Nigussie7
通讯作者Taye, Gebeyehu
来源期刊PHYSICAL GEOGRAPHY
ISSN0272-3646
EISSN1930-0557
出版年2013
卷号34期号:3页码:236-259
英文摘要

Land degradation and recurrent drought are the major threats to rain-fed agriculture in the semi-arid Ethiopian highlands. Water harvesting has become a priority in the Tigray region since 1990. However, the success of water harvesting in reservoirs is limited due to reduced inflow. The aim of this study was to investigate the effects of typical land-use types, slope gradients, and different soil and water conservation (SWC) structures on runoff and soil loss at the runoff-plot scale. Six runoff measuring sites, corresponding to three slope gradients, were established for cropland (cultivated land for annual crop production) and rangeland (heavily grazed land on hillslopes with high rock-fragment cover) at Mayleba catchment in Tigray, Ethiopia. SWC structures tested were stone bunds, trenches, and stone bunds with trenches, in addition to control plots. In total, 21 large runoff plots (with lengths of 60 to 100 m) were monitored daily for runoff production and soil loss during the main rainy season (July-September) in 2010. The results show that the seasonal runoff coefficient (RCs) representing the fraction of rainfall measured as runoff was much higher for rangeland (0.38 < RCs < 0.50) compared to that for cropland (0.11 < RCS < 0.15). Seasonal soil loss (SLs) values were five to six times larger on rangeland (28.6 < SLs < 50.0 ton ha(-1)) compared to that for cropland (4.6 < SLs < 11.4 ton ha(-1)). Stone bunds with trenches were the most effective SWC structures in reducing runoff and soil loss. With the same SWC structures installed, RCs and SLs for both rangeland and cropland tend to decrease with increasing slope gradient mainly due to a corresponding increase in rock-fragment cover. The effects of SWC structures on runoff production and soil loss are considerable; hence, it is crucial to consider these effects for optimal design of water-harvesting schemes such as micro-dams that collect and store surface runoff for irrigation development in the Ethiopian highlands.


英文关键词Ethiopian highlands runoff plot soil erosion water harvesting cropland rangeland stone bunds trenches
类型Article
语种英语
国家Ethiopia ; Belgium ; Japan
收录类别SCI-E
WOS记录号WOS:000328506300005
WOS关键词ROCK FRAGMENT COVER ; TIGRAY HIGHLANDS ; INTERRILL RUNOFF ; STONE BUNDS ; NILE BASIN ; CROP YIELD ; EROSION ; VARIABILITY ; RAINFALL ; CATCHMENT
WOS类目Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Physical Geography ; Geology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179218
作者单位1.Mekelle Univ, Dept Land Resources Management & Environm Protect, Mekelle, Ethiopia;
2.Katholieke Univ Leuven, Dept Earth & Environm Sci, Louvain, Belgium;
3.Catholic Univ Louvain, Earth & Life Inst, Georges Lemaitre Ctr Earth & Climate Res, B-1348 Louvain, Belgium;
4.Res Fdn Flanders, Brussels, Belgium;
5.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium;
6.Univ Namur, Dept Geol, Namur, Belgium;
7.Tottori Univ, Arid Land Res Ctr, Tottori 680, Japan
推荐引用方式
GB/T 7714
Taye, Gebeyehu,Poesen, Jean,Van Wesemael, Bas,et al. Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid Northern Ethiopia[J],2013,34(3):236-259.
APA Taye, Gebeyehu.,Poesen, Jean.,Van Wesemael, Bas.,Vanmaercke, Matthias.,Teka, Daniel.,...&Haregeweyn, Nigussie.(2013).Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid Northern Ethiopia.PHYSICAL GEOGRAPHY,34(3),236-259.
MLA Taye, Gebeyehu,et al."Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid Northern Ethiopia".PHYSICAL GEOGRAPHY 34.3(2013):236-259.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Taye, Gebeyehu]的文章
[Poesen, Jean]的文章
[Van Wesemael, Bas]的文章
百度学术
百度学术中相似的文章
[Taye, Gebeyehu]的文章
[Poesen, Jean]的文章
[Van Wesemael, Bas]的文章
必应学术
必应学术中相似的文章
[Taye, Gebeyehu]的文章
[Poesen, Jean]的文章
[Van Wesemael, Bas]的文章
相关权益政策
暂无数据
收藏/分享

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。