Soil erosion rates in two karst peak-cluster depression basins of northwest Guangxi, China: Comparison of the RUSLE model with (CS)-C-137 measurements

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 > 山地表生过程与生态调控重点实验室

	Soil erosion rates in two karst peak-cluster depression basins of northwest Guangxi, China: Comparison of the RUSLE model with (CS)-C-137 measurements
	Feng, Teng 1,2,3; Chen, Hongsong 1,2; Polyakov, Viktor O.4; Wang, Kelin 1,2; Zhang, Xinbao5 ; Zhang, Wei1,2
刊名	GEOMORPHOLOGY
	2016-01-15
卷号	253 页码:217-224
关键词	Karst RUSLE Calibration Slope length Cs-137
ISSN号	0169-555X
通讯作者	Chen, Hongsong
英文摘要	Reliable estimation of erosion in karst areas is difficult because of the heterogeneous nature of infiltration and subsurface drainage. Understanding the processes involved is a key requirement for managing against karst rock desertification. This study used the revised Universal Soil Loss Equation (RUSLE) to estimate the annual soil erosion rates on hillslopes and compared them with Cs-137 budget in the depressions at two typical karst peak-cluster depression basins in northwest Guangxi, southwestern China. Runoff plots data were used to calibrate the slope length factor (L) of the RUSLE model by adjusting the accumulated area threshold. The RUSLE model was sensitive to the value of the threshold and required DEMs with 1 m resolution, due to the discontinuous nature of the overland flow. The average annual soil erosion rates on hillslopes simulated by the RUSLE were 0.22 and 0.10 Mg ha(-1) y(-1) 2006 through 2011 in the partially cultivated GZ1 and the undisturbed GZ2 basins, respectively. The corresponding deposition rates in the depressions agreed well with the Cs-137 records when recent changes in precipitation and land use were taken into consideration. The study suggests that attention should be given to the RUSLE-L factor when applying the RUSLE on karst hillslopes because of the discontinuous nature of runoff and significant underground seepage during storm events that effectively reduces the effects of slope length. (C) 2015 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]	Physical Geography ; Geology
关键词[WOS]	LOSS EQUATION ; CESIUM-137 MEASUREMENTS ; SOUTHWEST CHINA ; SOUTHEAST SPAIN ; LAND-USE ; SEDIMENT ; RUNOFF ; GIS ; VARIABILITY ; ENGLAND
收录类别	SCI
语种	英语
WOS记录号	WOS:000367114100020
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/14022]
专题	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 Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China 2.Chinese Acad Sci, Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Guangxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.ARS, USDA, Southwest Watershed Res Ctr, Tucson, AZ 85719 USA 5.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Feng, Teng,Chen, Hongsong,Polyakov, Viktor O.,et al. Soil erosion rates in two karst peak-cluster depression basins of northwest Guangxi, China: Comparison of the RUSLE model with (CS)-C-137 measurements[J]. GEOMORPHOLOGY,2016,253:217-224.
APA	Feng, Teng,Chen, Hongsong,Polyakov, Viktor O.,Wang, Kelin,Zhang, Xinbao,&Zhang, Wei.(2016).Soil erosion rates in two karst peak-cluster depression basins of northwest Guangxi, China: Comparison of the RUSLE model with (CS)-C-137 measurements.GEOMORPHOLOGY,253,217-224.
MLA	Feng, Teng,et al."Soil erosion rates in two karst peak-cluster depression basins of northwest Guangxi, China: Comparison of the RUSLE model with (CS)-C-137 measurements".GEOMORPHOLOGY 253(2016):217-224.