期刊
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
卷 10, 期 3, 页码 239-252出版社
ELSEVIER
DOI: 10.1016/j.jag.2007.10.006
关键词
AnnAGNPS; runoff; soil loss estimation; nutrient loadings; RUSLE
资金
- Ministry of Science, Technology and the Innovation (MOSTI), Malaysia
- Universiti Sains Malaysia (USM)
The study evaluated the performance and suitability of AnnAGNPS model in assessing runoff, sediment loading and nutrient loading under Malaysian Conditions. The watershed of River Kuala Tasik in Malaysia, a combination of two sub-watersheds, was selected as the area of study. The data for the year 2004 was used to calibrate the model and the data for the year 2005 was used for validation purposes. Several input parameters were computed using methods suggested by other researchers and studies carried out in Malaysia. The study shows that runoff was predicted well with an overall R-2 value of 0.90 and E value of 0.70. Sediment loading was able to produce a moderate result of R-2 = 0.66 and E = 0.49, nitrogen loading predictions were slightly better with R-2 = 0.68 and E = 0.53, and phosphorus loading performance was slightly poor with an R-2 = 0.63 and E = 0.33. The erosion map developed was in agreement with the erosion risk map produced by the Department of Agriculture, Malaysia. Rubber estates and urban areas were found to be the main contributors to soil erosion. The simulation results showed that AnnAGNPS has the potential to be used as a valuable tool for planning and management of watersheds under Malaysian conditions. (C) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据