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Determination of purple soil loss tolerance based on soil productivity in southwest China
Du, S.1,2; Chen, A.1,3; Liu, G.4,5,6
Corresponding AuthorDu, S
2013-03-01
Source PublicationJOURNAL OF SOIL AND WATER CONSERVATION
ISSN0022-4561
Volume68Issue:2Pages:146-152
SubtypeArticle
AbstractSoil loss tolerance (the T value) is generally defined as the maximum acceptable soil loss that allows a high level of productivity to be maintained for a long period while considering the soil fertility and productivity The T value is both the basic criterion for determining whether erosion control measures are necessary to conserve the soil and the index used to classify the degree of soil erosion. Therefore, soil loss tolerance must be determined scientifically and rationally. In this study, the ultimate objective was to determine the T value that could sustainably satisfy the needs of local development with regard to regional social progress based on the productivity of the soil. Artificially established plots with soil depths of 10, 20, 40 and 60 cm (4, 8, 16, and 24 in), representing 50, 40, 20 and 0 cm (20, 16, 8, and 0 in) of eroded soil depth, respectively, were used to determine quantitatively the effect of soil erosion on soil productivity. The crops planted within the plots were corn (Zea mays L.) and wheat (Triticum aestivum L.) for summer and winter, respectively, and their yields were used as the proxy measure of the productivity of the soil. The T value was determined by the permissible reduction rate of soil productivity that satisfies the requirements of local sustainable development in the long term and the relationship between the eroded soil depth and soil productivity. The results demonstrated that the crop yield decreased at an exponential rate with an eroded soil depth: with a 1% reduction in crop yield, the soils planted with corn were eroded by 0.92 cm (0.36 in), and those planted with wheat were eroded by 0.94 cm (0.37 in). After analyzing the increase in the local soil productivity and the requirements for sustainable social development, the soil productivity reduction tolerance was found to be 0.1%, and the T value of the studied region was determined to be 11 Mg ha(-1) y(-1) (4.91 tn ac(-1) yr(-1))
KeywordCrop Yield Erosion Effect Soil Loss Tolerance Soil Productivity
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.2489/jswc.68.2.146
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Agriculture ; Water Resources
Indexed BySCI
WOS KeywordCROP PRODUCTIVITY ; GLOBAL IMPACT ; EROSION ; DEPTH ; WATER
Language英语
WOS SubjectEcology ; Soil Science ; Water Resources
WOS IDWOS:000316159100014
Funding OrganizationNatural Science Foundation of China(40971168) ; Foundation of the Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5452
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Chengdu, Peoples R China
2.China West Normal Univ, Chengdu, Peoples R China
3.Yunnan Acad Agr Sci, Chengdu, Peoples R China
4.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
5.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
6.Minist Water Resources, Chengdu, Peoples R China
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GB/T 7714
Du, S.,Chen, A.,Liu, G.. Determination of purple soil loss tolerance based on soil productivity in southwest China[J]. JOURNAL OF SOIL AND WATER CONSERVATION,2013,68(2):146-152.
APA Du, S.,Chen, A.,&Liu, G..(2013).Determination of purple soil loss tolerance based on soil productivity in southwest China.JOURNAL OF SOIL AND WATER CONSERVATION,68(2),146-152.
MLA Du, S.,et al."Determination of purple soil loss tolerance based on soil productivity in southwest China".JOURNAL OF SOIL AND WATER CONSERVATION 68.2(2013):146-152.
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