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Effects of cover on soil particle and associated soil nutrient redistribution on slopes under rainfall simulation
Sun, JM (Sun, Jiamei)1,2; Huang, CH (Huang, Chi-hua)2; Han, GN (Han, Guannan)3; Wang, YF (Wang, Yafeng)1,4
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
2019
Volume19Issue:2Pages:729-740
DOI10.1007/s11368-018-2088-y
Abstract

PurposeSediment detachment, transportation, and deposition occurred alternately along slope during erosion process. Nutrients were mobilized with sediment movement. In this research, nutrients and fractal characteristics were analyzed on both bare and covered slopes. Then, combined with photogrammetry technique, soil elevation and associated soil nutrient redistribution on slope positions during rainfall event were explored.Materials and methodsCombined with simulated rainfall method, bare and covered slopes experienced erosion process. Fractal theory was used to analyze sediment particle size distribution. Photogrammetry technique was applied to locate sediment redistribution. Soil and runoff were sampled and analyzed to obtain nutrient variations.Results and discussionCovered slope yielded less runoff and sediment in comparison to bare slope. Compared to bare slope, covered slope had lower total nitrogen (TN) (p=4.8x10(-24)) and total phosphorus (TP) (p=2.9x10(-23)) concentration but higher total organic carbon (TOC) concentration (p=9.6x10(-10)). There was no significant difference between inorganic carbon (IC) concentrations on bare slope and covered slope (p=0.051). Fractal dimensions ranged from 2.16 to 2.37 on bare slope, and they were greater than those from covered slope (ranged from 1.63 to 2.26). Linear and exponential relationships were established between fractal dimension and TOC, IC, TN, and TP concentrations. TOC concentration and IC concentration were in negative correlations with fractal dimension, while TN concentration and TP concentration were in positive correlations with fractal dimension. Mean elevation change analyzed from photogrammetry was -4.9 and -1.2mm on bare slope and covered slope, respectively. Upslope sections were main elevation and nutrient loss areas. 9.8mm soil lost on bare slope and 2.8mm on covered slope. TOC, IC, and TP concentrations decreased on upper position, while TN increased. Three sections in middle area had dramatic erosion variations and decreased TOC. Elevation increased on covered slope in F3 section. On downslopes, IC content increased whereas TOC concentration increased. TN and TP content decreased in most sections on the bare slope, while the situation was changed on the filter covered slope, and TN and TP accumulated on the middle slope.ConclusionsCover reduced runoff and sediment yield rates, and it also reduced elevation decrease degree. There was significant sediment deposition in the middle slope. Cover had functions in reducing TOC loss degree and preventing TN and TP loss out from the slope, but there was no significant difference between IC concentrations on bare slope and covered slope.

Subject AreaEnvironmental Sciences
WOS IDWOS:000457745700019
Language英语
Indexed BySCI
KeywordSize Distribution Fractal Features Raindrop Impact Organic-matter Surface Runoff Erosion Carbon Nitrogen Transport Microtopography
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
Cooperation Status国际
ISSN1439-0108
Department高寒生态与人类适应
URL查看原文
PublisherSPRINGER HEIDELBERG
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9412
Collection图书馆
Corresponding AuthorWang, YF (Wang, Yafeng)
Affiliation1.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China;
2.USDA ARS, Natl Soil Eros Res Lab, 275 S Russell St, W Lafayette, IN 47907 USA;
3.Norendar Int Ltd, Shijiazhuang 050011, Hebei, Peoples R China;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Sun, JM ,Huang, CH ,Han, GN ,et al. Effects of cover on soil particle and associated soil nutrient redistribution on slopes under rainfall simulation[J]. JOURNAL OF SOILS AND SEDIMENTS,2019,19(2):729-740.
APA Sun, JM ,Huang, CH ,Han, GN ,&Wang, YF .(2019).Effects of cover on soil particle and associated soil nutrient redistribution on slopes under rainfall simulation.JOURNAL OF SOILS AND SEDIMENTS,19(2),729-740.
MLA Sun, JM ,et al."Effects of cover on soil particle and associated soil nutrient redistribution on slopes under rainfall simulation".JOURNAL OF SOILS AND SEDIMENTS 19.2(2019):729-740.
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