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Preliminary investigation of the potential for using the Cs-137 technique to date sediment deposits in karst depressions and to estimate rates of soil loss from karst catchments in southwest China
Language英语
Zhang XB1,2; Bai XY1; Wen AB1
Corresponding AuthorZhang XB
2010
Source PublicationSEDIMENT DYNAMICS FOR A CHANGING FUTURE
Author of SourceBanasik, K ; Horowitz, AJ ; Owens, PN ; Stone, M ; Walling, DE
Pages149-156
meetingInternational Symposium on Sediment Dynamics for a Changing Future
Conference DateJUN 14-18, 2010
Conference PlaceWarsaw Univ Life Sci, Warsaw
CountryPOLAND
PublisherWarsaw Univ Life Sci
Contribution Rank1
Funding OrganizationHydroprojekt Sp; Minist Agr &Rural Dev; Geomor Technik Sp; AP Instruments; Reg Chamber Construct Engn; Polish Airlines LOT
AbstractSoil erosion plays an important role in land desertification in the karst mountain areas of southwest China, but reliable data on rates of surface soil loss in the area are very limited. Hill-depressions are common landforms in the karst areas. The Cs-137 technique was used to date the sediment deposits in six karst depressions, to estimate average rates of surface soil loss from their catchments. The estimates of soil loss rates obtained from this study evidenced considerable variability. A value of 1.0 t km(-2) year(-1) was obtained for a catchment under original dense karst forest, but the erosion rates ranged between 19.3 t km(-2) year(-1) and 48.7 t km(-2) year(-1) in four catchments under secondary forest or grasses, where the original forest cover had been removed in the Ming and Qing dynasties, several hundred years ago. The highest rate of 1643 t km(-2) year(-1) was obtained for a catchment underlain by clayey carbonate rocks, where the soil cover was thicker and more extensive than in the other catchments and extensive land reclamation for cultivation had occurred during, the period 1979-1981, immediately after the Cultural Revolution.
Keywordkarst depression accumulated sediment dating caesium-137 soil loss erosion rates
ISBN978-1-907161-10-0
ISSN0144-7815
Indexed ByCPCI ; EI
WOS IDWOS:000309505900019
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5285
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
科技与合作处
Corresponding AuthorZhang XB
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Sichuan, Peoples R China;
2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guixhou, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhang XB,Bai XY,Wen AB. Preliminary investigation of the potential for using the Cs-137 technique to date sediment deposits in karst depressions and to estimate rates of soil loss from karst catchments in southwest China[C]//Banasik, K, Horowitz, AJ, Owens, PN, Stone, M, Walling, DE:Warsaw Univ Life Sci,2010:149-156.
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