ダウンロード数 : ?
言語
英語
著者
Kindiye Ebabu
Atsushi Tsunekawa
Nigussie Haregeweyn
Enyew Adgo
Derege Tsegaye Meshesha
Dagnachew Aklog
Mitsuru Tsubo
Dagnenet Sultan
Ayele Almaw Fenta
Mesenbet Yibeltal
内容記述(抄録等)
Understanding the effect of land use and sustainable land management (SLM) practices on runoff and soil loss (SL) is essential for adopting suitable strategies to control soil erosion. The purpose of this study was to analyze runoff and SL from different land use types and evaluate the effectiveness of different SLM practices through monitoring runoff and sediment from 42 runoff plots (30 m × 6 m) in different agro-ecologies of the Upper Blue Nile basin of Ethiopia. Four treatments for croplands (control, soil bund, Fanya juu, and soil bund reinforced with grass) and three treatments for non-croplands (control, exclosure, and exclosure with trenches) were investigated during the rainy seasons. The results showed that runoff and SL varied greatly depending on agro-ecology, land use type, and SLM practice. Seasonal runoff ranged from 52 to 810 mm in 2015 and 37 to 898 mm in 2016, whereas SL ranged from 0.07 to 39.67 t ha−1 and 0.01 to 24.70 t ha−1. The highest rates were observed from untreated grazing land in the midland agro-ecology, largely because of heavy grazing and the occurrence of intense rain events. Runoff and SL were both significantly lower (P < 0.05) in SLM plots than in control plots. On average, seasonal runoff was reduced by 11% to 68%, and SL by 38% to 94% in SLM plots. Soil bund reinforced with grass in croplands and exclosure with trenches in non-croplands were found to be the most effective SLM practices for reducing both runoff and SL. Integrating structural and vegetative measures was therefore found to be the best way to control soil erosion and its consequences. Additional investigation is needed in consideration of ecological succession and other possible effects of these types of integrated measures, for example, the effects on soil properties, biomass, and biodiversity.
主題
Soil erosion
Contrasting agro-ecologies
SLM practices
Vegetation restoration
Drought prone
掲載誌名
Science of The Total Environment
648
開始ページ
1462
終了ページ
1475
ISSN
0048-9697
発行日
2019-1-15
DOI
出版者
Elsevier B.V.
資料タイプ
学術雑誌論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e35543
部局
生物資源科学部