Modelling the effects of land-use change on runoff and sediment yield in the Weicheng River watershed, Southwest China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2015 > Vol12 No.2

	Modelling the effects of land-use change on runoff and sediment yield in the Weicheng River watershed, Southwest China
	Zhang Xiao-ke1,2 ; Fan Ji-hui1 ; Cheng Gen-wei1
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2015-03-01
卷号	12 期号:2 页码:434-445
关键词	Land-use change Hydrological modelling Reforestation scenario Runoff and sediment yield
ISSN号	1672-6316
通讯作者	FAN Ji-hui
英文摘要	As a major sediment area in the upper Yangtze River, Jialing River basin experienced substantial land-use changes, many water conservancy projects were constructed from the 1980s onward to promote water and soil conservation. The water and sediment yield at the watershed outlet was strongly affected by these water conservation works, including ponds and reservoirs, which should be considered in the modelling. In this study, based on the observed data of the Weicheng River catchment, the relationships between precipitation, runoff, vegetation, topography and sediment yield were analyzed, a distributed runoff and sediment yield model (WSTD-SED) was developed, and the hydrological processes of different land-use scenarios were simulated by using the model. The main results are summarized as follows: 1) there is an alternating characteristic in river channels and reservoirs in the Jialing River hilly area, with scour occurring in wet years and deposit occurring in dry years. 2) Most of the sediment deposited in river channels and reservoirs is carried off by the largest flood in the year. 3) The model yielded plausible results for runoff and sediment yield dynamics without the need of calibration, and the WSTD-SED model could be used to obtain qualitative estimates on the effects of land use change scenarios. 4) The modelling results suggest that a 10% increase in cropland (dry land) reforestation results in a 0.7% decrease in runoff and 1.5% decrease in sediment yield.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	XINANJIANG MODEL ; YANGTZE-RIVER ; SOURCE POLLUTION ; SOIL-EROSION ; BASIN ; IMPACTS ; VARIABILITY ; SIMULATION ; CLIMATE ; SCALE
收录类别	SCI
语种	英语
WOS记录号	WOS:000351664200014
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/7979]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.2 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang Xiao-ke,Fan Ji-hui,Cheng Gen-wei. Modelling the effects of land-use change on runoff and sediment yield in the Weicheng River watershed, Southwest China[J]. JOURNAL OF MOUNTAIN SCIENCE,2015,12(2):434-445.
APA	Zhang Xiao-ke,Fan Ji-hui,&Cheng Gen-wei.(2015).Modelling the effects of land-use change on runoff and sediment yield in the Weicheng River watershed, Southwest China.JOURNAL OF MOUNTAIN SCIENCE,12(2),434-445.
MLA	Zhang Xiao-ke,et al."Modelling the effects of land-use change on runoff and sediment yield in the Weicheng River watershed, Southwest China".JOURNAL OF MOUNTAIN SCIENCE 12.2(2015):434-445.