IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Evaluating of the spatial heterogeneity of soil loss tolerance and its effects on erosion risk in the carbonate areas of southern China
Li, Yue1,2,3; Bai, Xiao Yong1,2,3,5; Wang, Shi Jie1,2,3; Qin, Luo Yi1,2,3; Tian, Yi Chao1,4; Luo, Guang Jie1,4
Corresponding AuthorXiao Yong Bai
2017-05-29
Source PublicationSOLID EARTH
ISSN1869-9510
Volume8Issue:3Pages:661-669
SubtypeArticle
AbstractSoil loss tolerance (T value) is one of the criteria in determining the necessity of erosion control measures and ecological restoration strategy. However, the validity of this criterion in subtropical karst regions is strongly disputed. In this study, T value is calculated based on soil formation rate by using a digital distribution map of carbonate rock assemblage types. Results indicated a spatial heterogeneity and diversity in soil loss tolerance. Instead of only one criterion, a minimum of three criteria should be considered when investigating the carbonate areas of southern China because the "one region, one T value" concept may not be applicable to this region. T value is proportionate to the amount of argillaceous material, which determines the surface soil thickness of the formations in homogenous carbonate rock areas. Homogenous carbonate rock, carbonate rock intercalated with clastic rock areas and carbonate/clastic rock alternation areas have T values of 20, 50 and 100 t/(km(2) a), and they are extremely, severely and moderately sensitive to soil erosion. Karst rocky desertification (KRD) is defined as extreme soil erosion and reflects the risks of erosion. Thus, the relationship between T value and erosion risk is determined using KRD as a parameter. The existence of KRD land is unrelated to the T value, although this parameter indicates erosion sensitivity. Erosion risk is strongly dependent on the relationship between real soil loss (RL) and T value rather than on either erosion intensity or the T value itself. If RL > > T, then the erosion risk is high despite of a low RL. Conversely, if T > > RL, then the soil is safe although RL is high. Overall, these findings may clarify the heterogeneity of T value and its effect on erosion risk in a karst environment.
KeywordCarbonates - Carbonation Erosion Landforms Rocks Sedimentary Rocks Soils
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.5194/se-8-661-2017
WOS Subject ExtendedGeochemistry & Geophysics
Indexed BySCI
WOS KeywordSOUTHWEST CHINA ; PRODUCTIVITY ; CATCHMENT ; REGION ; LAND
Language英语
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000402403000001
Funding OrganizationNational Key Research Program of China(2016YFC0502300 ; United Fund of karst science research center(U1612441) ; International cooperation research projects of the national natural science fund committee(41571130074 ; Science and Technology Plan of Guizhou Province of China(2012-6015 ; Science and technology cooperation projects(2014-3) ; 2016YFC0502102 ; 41571130042) ; 2013-3190 ; 2013CB956700 ; 201742920512120000) ; 2014BAB03B02)
Accession numberAccession number:20172203718865
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18692
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Guizhou, Peoples R China
2.Chinese Acad Sci, Inst Geochem, Puding Comprehens Karst Res & Expt Stn, Puding 562100, Guizhou, Peoples R China
3.Sci & Technol Dept Guizhou Prov, Puding 562100, Guizhou, Peoples R China
4.Chinese Acad Sci, Grad Sch, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Li, Yue,Bai, Xiao Yong,Wang, Shi Jie,et al. Evaluating of the spatial heterogeneity of soil loss tolerance and its effects on erosion risk in the carbonate areas of southern China[J]. SOLID EARTH,2017,8(3):661-669.
APA Li, Yue,Bai, Xiao Yong,Wang, Shi Jie,Qin, Luo Yi,Tian, Yi Chao,&Luo, Guang Jie.(2017).Evaluating of the spatial heterogeneity of soil loss tolerance and its effects on erosion risk in the carbonate areas of southern China.SOLID EARTH,8(3),661-669.
MLA Li, Yue,et al."Evaluating of the spatial heterogeneity of soil loss tolerance and its effects on erosion risk in the carbonate areas of southern China".SOLID EARTH 8.3(2017):661-669.
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