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Evaluation of land-use change effects on runoff and soil erosion of a hilly basin the Yanhe River in the Chinese Loess Plateau
Yang, Kaijie1,2; Lu, Changhe1,2
2018-04-01
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
Volume29Issue:4Pages:1211-1221
Corresponding AuthorLu, Changhe(luch@igsnrr.ac.cn)
AbstractStarting 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.
Keywordland-use change runoff soil erosion SWAT the Loess Plateau China
DOI10.1002/ldr.2873
WOS KeywordSEDIMENT LOAD ; CATCHMENT ; CLIMATE ; MODEL ; REGION ; RESTORATION ; SIMULATIONS ; VARIABILITY ; REACHES ; IMPACTS
Indexed BySCI
Language英语
Funding ProjectNational Key RD Plan of China[2017YFA0604701] ; National Key RD Plan of China[2012CB955304] ; National Natural Science Foundation of China[41671093]
Funding OrganizationNational Key RD Plan of China ; National Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000430126700032
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57379
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLu, Changhe
Affiliation1.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
Recommended Citation
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.
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