Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ldr.2526 |
Modeling Sediment Yield in Semi-Arid Pasture Micro-Catchments, NW Iran | |
Vaezi, Ali Reza1; Abbasi, Mohammad1; Bussi, Gianbattista2; Keesstra, Saskia3 | |
通讯作者 | Vaezi, Ali Reza |
来源期刊 | LAND DEGRADATION & DEVELOPMENT
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ISSN | 1085-3278 |
EISSN | 1099-145X |
出版年 | 2017 |
卷号 | 28期号:4页码:1274-1286 |
英文摘要 | Modeling sediment yield is a complex task because of the nonlinearity of natural processes intervening at slope and basin scale. In this study slope steepness, vegetation cover, and soil properties along with sediment yield were studied in 20 pasture micro-catchments in a semi-arid region, NW Iran in order to understand and predict sediment yield. The micro-catchments included only one first-order gully and drain toward a rock check dam in the outlet. The sediment yield of each micro-catchment was calculated using the measurement of sediment mass in the check dams for a 16-year period (1994-2010). Relationships between sediment yield and drainage characteristics were analyzed using correlation matrix and multiple linear regression method. Based on the results, sediment yield in the micro-catchments varied from 0.29Mgha(-1)y(-1) to 14.81Mgha(-1)y(-1), with an average of 5.04Mgha(-1)y(-1). It was significantly related to slope steepness, vegetation cover, and soil organic matter using a linear regression equation (R-2=0.87, p<0.001). The slope, vegetation, and soil organic matter explained about 44%, 23%, and 20% of total variance in sediment yield, respectively. The spatial validation of the model using data from eight different micro-catchments located nearby showed that the model efficiency is 0.94. Therefore, the model can be used for predicting sediment yield in this and similar study area, with a high degree of accuracy. Copyright (c) 2016 John Wiley & Sons, Ltd. |
英文关键词 | check dams sediment production slope steepness soil organic matter vegetation cover |
类型 | Article |
语种 | 英语 |
国家 | Iran ; England ; Netherlands |
收录类别 | SCI-E |
WOS记录号 | WOS:000401322900010 |
WOS关键词 | PREDICTING SOIL-EROSION ; MEDITERRANEAN CATCHMENT ; EASTERN SPAIN ; NORTHERN ETHIOPIA ; REGIONAL SCALES ; ORGANIC-MATTER ; WATER EROSION ; CHECK DAMS ; LAND-USE ; BASIN |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
来源机构 | University of Oxford |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200964 |
作者单位 | 1.Univ Zanjan, Agr Fac, Dept Soil Sci, Zanjan 4537138791, Iran; 2.Univ Oxford, Sch Geog & Environm, Oxford, England; 3.Wageningen Univ, Soil Phys & Land Management Grp, Wageningen, Netherlands |
推荐引用方式 GB/T 7714 | Vaezi, Ali Reza,Abbasi, Mohammad,Bussi, Gianbattista,et al. Modeling Sediment Yield in Semi-Arid Pasture Micro-Catchments, NW Iran[J]. University of Oxford,2017,28(4):1274-1286. |
APA | Vaezi, Ali Reza,Abbasi, Mohammad,Bussi, Gianbattista,&Keesstra, Saskia.(2017).Modeling Sediment Yield in Semi-Arid Pasture Micro-Catchments, NW Iran.LAND DEGRADATION & DEVELOPMENT,28(4),1274-1286. |
MLA | Vaezi, Ali Reza,et al."Modeling Sediment Yield in Semi-Arid Pasture Micro-Catchments, NW Iran".LAND DEGRADATION & DEVELOPMENT 28.4(2017):1274-1286. |
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