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  4. 山地表生过程与生态调控重点实验室
Assessment of underground soil loss via the tapering grikes on limestone hillslopes

文献类型：期刊论文

作者Feng Teng1,2,3; Chen Hongsong1,3; Wang Kelin1,3; Nie Yunpeng1,3; Zhang Xinbao4; Mo Hongwei2
刊名AGRICULTURE ECOSYSTEMS & ENVIRONMENT
出版日期2020
卷号297页码:UNSP 106935
关键词underground soil loss tapering limestone grikes quantitative estimation tracer technique bedrock dissolution
ISSN号0167-8809
DOI10.1016/j.agee.2020.106935
产权排序4
文献子类Article
英文摘要Determining the mechanism of rocky desertification by investigating the sediment transport process in carbonate aquifers with the great mixture of various karst conduit features presents severe difficulties. This study put its focus on the overlying soil entering the master small-scale surface karst negative (SSKN) feature, the tapering grike on limestone hillslopes. The objective is to assess the primary forms and the annual rates of underground soil loss relative to the crown cross-section of the grikes wall. The tapering grikes were differentiated into the fully and partially filled ones based on the current filling status of the soil. Through the analysis of the possible scenarios, the stable carbon isotope and Cs-137 records of soil in the sample grikes in Southwest China, the underground soil loss form was mainly inferred as the downward creeping of overlying soil mass via the fully filled one, and the deposition of eroded overlying soils into the partially filled grike. The formula of inside space forming rate determined by the bedrock dissolution rate and the grike shape, was proposed for obtaining the current potential annual underground soil loss rate via the fully filled grike, the calculation result of which for the sample was 275.2 t km(-2) y(-1). The Cs-137 identification method of the sediment deposition depth was used to estimate the average annual underground soil loss rate since 1963 via the partially filled grike, which was 3094.4 t km(-2) y(-1) for the sample. The calculations indicated that the underground soil loss via the tapering grikes contributed a lot to the overlying soil reduction in the process of karst rocky desertification. More attentions should be given to assess the underground soil loss via all the SSKN features on the whole hillslope scale and evaluate the impacts of human activities.
电子版国际标准刊号1873-2305
语种英语
WOS记录号WOS:000530645900002
源URL[http://ir.imde.ac.cn/handle/131551/34622]  
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
通讯作者Chen Hongsong
作者单位1.Chinese Acad Sci, Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Guangxi, Peoples R China;
2.Hunan Univ Sci & Technol, Sch Resource Environm & Safety Engn, Xiangtan 411201, Hunan, Peoples R China;
3.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China;
4.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,Wang Kelin,et al. Assessment of underground soil loss via the tapering grikes on limestone hillslopes[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2020,297:UNSP 106935.
APA Feng Teng,Chen Hongsong,Wang Kelin,Nie Yunpeng,Zhang Xinbao,&Mo Hongwei.(2020).Assessment of underground soil loss via the tapering grikes on limestone hillslopes.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,297,UNSP 106935.
MLA Feng Teng,et al."Assessment of underground soil loss via the tapering grikes on limestone hillslopes".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 297(2020):UNSP 106935.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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