Evaluation of land-use change effects on runoff and soil erosion of a hilly basin the Yanhe River in the Chinese Loess Plateau

doi:10.1002/ldr.2873

	Evaluation of land-use change effects on runoff and soil erosion of a hilly basin the Yanhe River in the Chinese Loess Plateau
	Yang, Kaijie 1,2; Lu, Changhe 1,2
刊名	LAND DEGRADATION & DEVELOPMENT
	2018-04-01
卷号	29 期号:4 页码:1211-1221
关键词	land-use change runoff soil erosion SWAT the Loess Plateau China
ISSN号	1085-3278
DOI	10.1002/ldr.2873
通讯作者	Lu, Changhe(luch@igsnrr.ac.cn)
英文摘要	Starting in 1999, the Grain-for-Green Programme has been implemented in the Loess Plateau to alleviate the severe soil erosion by converting steeply sloping croplands to forestlands or grasslands. To quantify the effects of these conservation efforts, this study identified the land-use changes between 2000 and 2015 and quantified their impacts on runoff and erosion using the Soil and Water Assessment Tools (SWAT) and a typical hilly basin, the Yanhe River basin as a case-study. To heighten the applicability of SWAT to the region, major model parameters were localized and calibrated for the period of 1975-1980 and were then validated for 1981-1987. The R-2 and NS validation indices were 0.70 and 0.65 for the monthly runoff and 0.67 and 0.61 for the sediment load, indicating that the model performance was acceptable. Between 2000 and 2015, the slope croplands were reduced by 39.9%, the forestlands increased by 90.2%, and the grasslands increased by 12.9%. These land-use changes were simulated using SWAT to reduce the basin runoff by 13.8% and the sediment load by 50.7%. Spatial analyses using ArcGIS indicated that the simulated reduction in water yield due to cropland conversion to forestland was more obvious than that due to the conversion to grassland, but the reductions in the sediment yields were similar. The results suggest that the Grain-for-Green practice during this period was effective for preventing soil and water losses.
资助项目	National Key RD Plan of China[2017YFA0604701] ; National Key RD Plan of China[2012CB955304] ; National Natural Science Foundation of China[41671093]
WOS关键词	SEDIMENT LOAD ; CATCHMENT ; CLIMATE ; MODEL ; REGION ; RESTORATION ; SIMULATIONS ; VARIABILITY ; REACHES ; IMPACTS
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000430126700032
资助机构	National Key RD Plan of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/57378]
专题	中国科学院地理科学与资源研究所
通讯作者	Lu, Changhe
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Kaijie,Lu, Changhe. Evaluation of land-use change effects on runoff and soil erosion of a hilly basin the Yanhe River in the Chinese Loess Plateau[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(4):1211-1221.
APA	Yang, Kaijie,&Lu, Changhe.(2018).Evaluation of land-use change effects on runoff and soil erosion of a hilly basin the Yanhe River in the Chinese Loess Plateau.LAND DEGRADATION & DEVELOPMENT,29(4),1211-1221.
MLA	Yang, Kaijie,et al."Evaluation of land-use change effects on runoff and soil erosion of a hilly basin the Yanhe River in the Chinese Loess Plateau".LAND DEGRADATION & DEVELOPMENT 29.4(2018):1211-1221.