IGSNRR OpenIR
Developing equations to explore relationships between aggregate stability and erodibility in Ultisols of subtropical China
Xiao, Hai1; Liu, Gang1,2; Liu, Puling1,2; Zheng, Fenli1,2; Zhang, Jiaqiong1,2; Hu, Feinan1,2
2017-10-01
Source PublicationCATENA
ISSN0341-8162
Volume157Pages:279-285
Corresponding AuthorLiu, Gang(gliu@foxmail.com)
AbstractA soil aggregate represents a key soil structural unit that influences several physical soil properties such as water infiltration, runoff and erosion. The relationships between soil aggregate stability and interrill and rill erodibility are critical to process-based erosion prediction models yet remain unclear, likely due to the difficulty of distinguishing between interrill and rill-eroded sediment during the erosion process. This study was designed to partition interrill and sill erosion rates and relate them to the aggregate stability of Ultisols in subtropical China. Six kinds of rare earth elements (REEs) were applied as tracers mixed with two cultivated soils developed over Quaternary red clay or shale at six slope positions. Soil aggregate stability was determined by the Le Bissonnais (LB)-method. Simulated rainfall of three intensities (60, 90 and 120 mm h(-1)) was applied to a soil plot (2.25 m long, 0.5 m wide, 0.2 m deep) at three slope gradients (10 degrees, 20 degrees and 30 degrees) for a duration of 30 min after runoff initiation. The results indicated that rill and interrill erosion rates in the soil developed over shale were considerably greater than those in the soil developed over Quaternary red clay. Equations using an aggregate stability index A(s) to replace the erodibility factor of interrill and rill erosion in the Water Erosion Prediction Project (WEPP) model were constructed after analysing the relationships between estimated and measured rill and interrill erosion data. The results show that these equations based on A, have the potential to improve methods for assessing interrill and rill erosion erodibility synchronously for subtropical Ultisols by using an REE tracing method.
KeywordREE Rill and interrill erosion Soil erodibility Aggregate stability WEPP model
DOI10.1016/j.catena.2017.05.032
WOS KeywordRARE-EARTH-ELEMENTS ; TRACING SEDIMENT MOVEMENT ; SANDY LOAM SOILS ; INTERRILL EROSION ; RILL EROSION ; FLOW ; TRANSPORT ; TRACERS ; DETACHMENT ; RUNOFF
Indexed BySCI
Language英语
Funding ProjectNatural Science Basic Research Plan in Shaanxi Province of China[2016JQ4017] ; Ministry of Science and Technology of China[2015BAC01B03-03] ; Natural Science Foundation of China[41201270] ; Natural Science Foundation of China[41371281] ; West Light Foundation of The Chinese Academy of Sciences[2014-91] ; Talents Research Start-up Foundation of Shaanxi Province[2013-02100-Z111021512] ; Chinese Universities Scientific Fund[2452016102] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-C2]
Funding OrganizationNatural Science Basic Research Plan in Shaanxi Province of China ; Ministry of Science and Technology of China ; Natural Science Foundation of China ; West Light Foundation of The Chinese Academy of Sciences ; Talents Research Start-up Foundation of Shaanxi Province ; Chinese Universities Scientific Fund ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000406732200025
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61473
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Gang
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Hai,Liu, Gang,Liu, Puling,et al. Developing equations to explore relationships between aggregate stability and erodibility in Ultisols of subtropical China[J]. CATENA,2017,157:279-285.
APA Xiao, Hai,Liu, Gang,Liu, Puling,Zheng, Fenli,Zhang, Jiaqiong,&Hu, Feinan.(2017).Developing equations to explore relationships between aggregate stability and erodibility in Ultisols of subtropical China.CATENA,157,279-285.
MLA Xiao, Hai,et al."Developing equations to explore relationships between aggregate stability and erodibility in Ultisols of subtropical China".CATENA 157(2017):279-285.
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