IMHE OpenIR  > 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, Teng1,2,3; Chen, Hongsong1,2; Polyakov, Viktor O.4; Wang, Kelin1,2; Zhang, Xinbao5; Zhang, Wei1,2
Corresponding AuthorChen, Hongsong
2016
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
EISSN1872-695X
Volume253Pages:217-224
SubtypeArticle
AbstractReliable 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.
KeywordKarst Rusle Calibration Slope Length Cs-137
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2015.10.013
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordLOSS EQUATION ; CESIUM-137 MEASUREMENTS ; SOUTHWEST CHINA ; SOUTHEAST SPAIN ; LAND-USE ; SEDIMENT ; RUNOFF ; GIS ; VARIABILITY ; ENGLAND
Language英语
Quartile2区
TOP
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000367114100020
Funding OrganizationNational Key Basic Research Program of China(2015CB452703) ; Action Plan for the Development of Western China of Chinese Academy of Sciences(KZCX2-XB3-10) ; National Natural Science Foundation of China(51379205)
Citation statistics
Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/14022
Collection山地表生过程与生态调控重点实验室
Affiliation1.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
Recommended Citation
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.
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