Impacts of precipitation variation and soil and water conservation measures on runoff and sediment yield in the Loess Plateau Gully Region, China

doi:https://doi.org/10.1007/s11629-016-4173-2

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-2017 > Vol14 No.10

	Impacts of precipitation variation and soil and water conservation measures on runoff and sediment yield in the Loess Plateau Gully Region, China
	XIA Lu; SONG Xiao-yu; FU Na; MENG Chun-fang; LI Huai-you; LI Yao-lin
刊名	Journal of Mountain Science
	2017-10
卷号	14 期号:10 页码:2028-2041
关键词	Quantitative Impact Trend Analysis Evolution Characteristics Runoffand Sediment Yield Rainfall Land Use Change
ISSN号	1672-6316
DOI	https://doi.org/10.1007/s11629-016-4173-2
通讯作者	SONG Xiao-yu
文献子类	期刊论文
英文摘要	The Loess Plateau of China has experienced a lengthy drought and severe soil erosion. Changes in precipitation and land use largely determine the dynamics of runoff and sediment yield in this region. Trend and mutation analyses were performed on hydrological data (1981–2012) from the Yanwachuan watershed in the Loess Plateau Gully Region to study the evolution characteristics of runoff and sediment yield. A time-series contrasting method also was used to evaluate the effects of precipitation and soil and water conservation (SWC) on runoff and sediment yield. Annual sediment yield declined markedlyfrom 1981 to 2012 although there was no significant change in annual precipitation and annual runoff. Change points of annual runoff and annual sediment yield occurred in 1996 and 1997, respectively. Compared with that in the baseline period (1981–1996), annual runoff and annual sediment yield in the change period (1997–2012) decreased by 17.0% and 76.0%, respectively, but annual precipitation increased by 6.3%. Runoff decreased in the flood season and normal season, but increased in the dry season, while sediment yield significantly declined in the whole study period. The SWC measures contributed significantly to the reduction of annual runoff (137.9%) and annual sediment yield (135%) and were more important than precipitation. Biological measures (forestland and grassland) accounted for 61.04% of total runoff reduction, while engineering measures (terraces and dams) accounted for 102.84% of total sediment yield reduction. Furthermore, SWCmeasures had positive ecological effects. Thisstudy provides a scientific basis for soil erosion control on the Loess Plateau.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/19096]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.10
推荐引用方式 GB/T 7714	XIA Lu,SONG Xiao-yu,FU Na,et al. Impacts of precipitation variation and soil and water conservation measures on runoff and sediment yield in the Loess Plateau Gully Region, China[J]. Journal of Mountain Science,2017,14(10):2028-2041.
APA	XIA Lu,SONG Xiao-yu,FU Na,MENG Chun-fang,LI Huai-you,&LI Yao-lin.(2017).Impacts of precipitation variation and soil and water conservation measures on runoff and sediment yield in the Loess Plateau Gully Region, China.Journal of Mountain Science,14(10),2028-2041.
MLA	XIA Lu,et al."Impacts of precipitation variation and soil and water conservation measures on runoff and sediment yield in the Loess Plateau Gully Region, China".Journal of Mountain Science 14.10(2017):2028-2041.