IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Vertical migration of soil constituents due to lateral soil movement under long-term tillage systems
Zhang ZH(张泽洪)1,2,3; Zhang JH(张建辉)1; Wang Y(王勇)1,3
Corresponding Author张建辉
2016
Source PublicationInternational Agricultural Engineering Journal
ISSN0858-2114
Volume25Issue:4Pages:41-51
Abstract

Research on the vertical migration of soil redistribution induced by tillage and the resultant effects on soil properties is limited for the slope land in non-mechanized agricultural areas. Both land-use types (uncultivated land and cultivated land) were selected in hilly areas of the Sichuan Basin, China to compare the vertical distribution of 137Cs and soil constituents and determine the vertical migration of soil constituents. The 137Cs data showed that vertical soil migration presented an increasing trend from the upper slope positions to the lower slope positions under the transport effect of tillage. The stratification ratio (SR) of soil constituents showed that the mixing effect of tillage resulted in the uniform distribution of soil organic matter (SOM), total nitrogen (TN), available nitrogen (AN), total phosphorus (TP), and available phosphorus (AP) across the soil profile. For SOM, TN, and AN, the vertical migration coefficients (VMCs) were less than 1.0 in the plough layer and more than 1.0 below the plough layer, suggesting that soil constituents were migrated downward from the plough layer to the subsoil(20-35 cm)due to tillage inversion at the middle and lower slope positions, but little migration due to tillage erosion at the upper slope positions. Vertical migration of soil constituents increased from the upper slope positions to the lower slope positions under the transporting effect of tillage. This shows that landscape positions exerted an important impact on the vertical migration of soil constituents. The study indicates that lateral and vertical soil redistribution by the inversion and transport effect of tillage causes the vertical migration of soil constituents and their lateral variability.

KeywordVertical Migration Soil Constituents Stratification Ratio (Sr) Vertical Migration Coefficient (Vmc) Tillage Erosion
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Indexed ByEI
Language英语
Accession numberAccession number:20170703346887
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17767
Collection山地表生过程与生态调控重点实验室
Affiliation1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041, China
2.School of Land and Resources, China West Normal University, Nanchong 637009, China
3.Graduate School of the Chinese Academy of Sciences, Beijing 100049, 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
Zhang ZH,Zhang JH,Wang Y. Vertical migration of soil constituents due to lateral soil movement under long-term tillage systems[J]. International Agricultural Engineering Journal,2016,25(4):41-51.
APA Zhang ZH,Zhang JH,&Wang Y.(2016).Vertical migration of soil constituents due to lateral soil movement under long-term tillage systems.International Agricultural Engineering Journal,25(4),41-51.
MLA Zhang ZH,et al."Vertical migration of soil constituents due to lateral soil movement under long-term tillage systems".International Agricultural Engineering Journal 25.4(2016):41-51.
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