IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Simulation and Cs-137 tracer show tillage erosion translocating soil organic carbon, phosphorus, and potassium
Li, Fucheng1,2,3; Zhang, Jianhui1,2; Su, Zhengan1,2; Fan, Hongzhu1,2,3
Corresponding AuthorZhang, Jianhui
2013
Source PublicationJOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
ISSN1436-8730
EISSN1522-2624
Volume176Issue:5Pages:647-654
SubtypeArticle
AbstractResearch on how tillage-induced soil redistribution affects soil properties is limited for complex slopes in nonmechanized agricultural areas. The objectives of this study are (1) to examine the vertical redistribution of soil organic C (SOC), extractable P and K induced by tillage on a complex slope, (2) to assess the effects of tillage erosion on soil profile properties, and (3) to elucidate the variations in soil properties induced by both vertical mixture and downslope transport of soil within the landscape. Simulated tillage was conducted in the Yangtze Three Gorges Reservoir Area, China. The Cs-137 data showed that intense tillage caused the soil vertical mixture and downslope transport. The redistribution of Cs-137 and soil constituents varied with the number of tillage passes and location in relation to curvature. SOC was completely depleted with the disappearance of soil profiles at the summit position, while SOC concentrations decreased by 26% for the till layer and increased by 29% for the sublayer at the toeslope position for the 15-tillage operation, as compared with those of pretillage. The vertical redistribution of extractable P and K followed a similar pattern to that of SOC. The gap and variation in soil constituents between the till layer and sublayer declined after tillage, suggesting that the mixing effect of tillage attenuates the variability of soil properties in the vertical direction. Net loss and gain of soil constituents occurred at the summit and toeslope positions, respectively, suggesting that the downslope transport of soil induced by tillage accentuates the variability of soil properties in the lateral direction.
KeywordTillage Erosion Spatial Variability Soil Redistribution Vertical Mixture Boundary Effect
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1002/jpln.201200341
URL查看原文
WOS Subject ExtendedAgriculture ; Plant Sciences
Indexed BySCI
WOS KeywordDIFFERENT LANDSCAPES ; INTENSIVE TILLAGE ; STEEP HILLSLOPE ; WATER EROSION ; CROP YIELD ; REDISTRIBUTION ; SLOPE ; CONSTITUENTS ; CULTIVATION ; TERRACES
Language英语
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000327899800001
Funding OrganizationNational Natural Science Foundation of China(41271242) ; Special Support Foundation of Institute of Mountain Hazards and Environment, CAS(SDS-135-1206)
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/8314
Collection山地表生过程与生态调控重点实验室
山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, 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
Recommended Citation
GB/T 7714
Li, Fucheng,Zhang, Jianhui,Su, Zhengan,et al. Simulation and Cs-137 tracer show tillage erosion translocating soil organic carbon, phosphorus, and potassium[J]. JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,2013,176(5):647-654.
APA Li, Fucheng,Zhang, Jianhui,Su, Zhengan,&Fan, Hongzhu.(2013).Simulation and Cs-137 tracer show tillage erosion translocating soil organic carbon, phosphorus, and potassium.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,176(5),647-654.
MLA Li, Fucheng,et al."Simulation and Cs-137 tracer show tillage erosion translocating soil organic carbon, phosphorus, and potassium".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 176.5(2013):647-654.
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