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Temporal variation in soil erosion resistance of steep slopes restored with different vegetation communities on the Chinese Loess Plateau
Zhang, Bao-jun1; Zhang, Guang-hui1,2; Yang, Han-yue2; Zhu, Ping-zong2
2019-11-01
Source PublicationCATENA
ISSN0341-8162
Volume182Pages:11
Corresponding AuthorZhang, Guang-hui(ghzhang@bnu.edu.cn)
AbstractVegetation growth can stimulate the changes in near soil-surface characteristics during a growing season in arid and semi-arid regions, and hence likely induces the temporal variation in soil erosion resistance, reflected by rill erodibility (K-r) and critical shear stress (tau(c)). This study investigated the temporal variations in soil erosion resistance of steep slopes restored with different vegetation communities on the Chinese Loess Plateau. The undisturbed topsoil samples, taken from one control cropland and seven vegetation communities at steep gully slopes, were scoured in a hydraulic flume under six different flow shear stresses. Sampling was conducted for seven times from April 23 to October 10, 2018. Near soil-surface characteristics were simultaneously determined to identify the major influencing factors for the temporal variation in soil erosion resistance. The results showed that the temporal variations in K-r of different vegetation communities differed significantly from that of the control. The relative K-r of vegetation-restored soils decreased exponentially over time. The temporal variations in tau(c) were also significantly different from the control for the vegetated samples. Vegetation restoration was effective to enhance soil erosion resistance, and the grass communities were more effective than shrub communities. Compared to control cropland, the mean K-r of vegetation-restored soils decreased by 72%-96%, while the mean tau(c) increased by 100%-183%. The major factors responsible for the temporal variations in K-r and tau(c) were the seasonal variations in root mass density, soil cohesion, and water stable aggregates. K-r decreased exponentially, while tau(c) increased logarithmically with root mass density, soil cohesion, and water stable aggregates.
KeywordSoil erosion resistance Temporal variation Vegetation restoration Gullies Chinese Loess Plateau
DOI10.1016/j.catena.2019.104170
WOS KeywordFLOWING WATER EROSION ; DIFFERENT LAND USES ; OVERLAND-FLOW ; DETACHMENT CAPACITY ; CONCENTRATED FLOW ; RILL ERODIBILITY ; TYPICAL GRASSLANDS ; GULLY SLOPES ; RESTORATION ; CRUSTS
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0504702] ; State Key Program of National Natural Science Foundation of China[41530858]
Funding OrganizationNational Key Research and Development Program of China ; State Key Program of National Natural Science Foundation of China
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000482493700054
PublisherELSEVIER
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/69732
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Guang-hui
Affiliation1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Bao-jun,Zhang, Guang-hui,Yang, Han-yue,et al. Temporal variation in soil erosion resistance of steep slopes restored with different vegetation communities on the Chinese Loess Plateau[J]. CATENA,2019,182:11.
APA Zhang, Bao-jun,Zhang, Guang-hui,Yang, Han-yue,&Zhu, Ping-zong.(2019).Temporal variation in soil erosion resistance of steep slopes restored with different vegetation communities on the Chinese Loess Plateau.CATENA,182,11.
MLA Zhang, Bao-jun,et al."Temporal variation in soil erosion resistance of steep slopes restored with different vegetation communities on the Chinese Loess Plateau".CATENA 182(2019):11.
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