干旱区生态环境知识资源中心(Arid): Predicting the coupling effects of grass and shrub with biological crust on splash and sheet erosion

Arid

DOI	10.1016/j.still.2024.106208
	Predicting the coupling effects of grass and shrub with biological crust on splash and sheet erosion
	Dan, Chenxi; Liu, Gang; Zhang, Qiong; Zhao, Yunge; Shen, Enshuai; Liu, Chang; Shu, Chengbo; Liu, Ya; Xia, Xiaolin; Liu, Dandan; Guo, Zhen; Zhao, Xining
通讯作者	Liu, G
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2024
卷号	244
英文摘要	Vegetation plays an important role in preventing soil erosion in arid and semi-arid regions. However, the current research on soil erosion under vegetation conditions neglected the role of biological crusts (BSC). The impact of different combinations of grass and shrub vegetation with BSC on the soil erosion process were investigated in this study through indoor simulated rainfall experiments and field experiments. Additionally, the calculation formula for the splash and sheet erodibility coefficients (KSS) in the Rangeland Hydrology and Erosion Model (RHEM) model was revised and validated. The results showed that the ability of BSC to reduce erosion was gradually enhanced with an increase in BSC coverage. The significant erosion reduction effect of BSC under different vegetation coverages was found. As the BSC coverage increased to 40 %, the soil erosion process changed from transport-limited to detach-limited. When grass and shrub was combined with BSC, the average flow velocity was smaller than that of the individual vegetation treatments. Moreover, the proportion of BSC resistance was the highest among the various vegetation combinations consistently. When the coverage of the combined BSC exceeded that of the vegetation, the BSC dominated the soil erosion process through its direct physical protection and indirect alteration of soil properties. When the BSC coverage was incorporated into KSS, the determination coefficients of the revised KSS were all above 0.8. This study deepened the understanding of the coupling effects of grass and shrub with BSC on slope erosion processes, and improved the predictive accuracy of the RHEM model.
英文关键词	Biocrust Erosion model Erosion process Vegetation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001258910300001
WOS关键词	PARTICLE-SIZE DISTRIBUTION ; LOESS PLATEAU REGION ; SOIL CRUSTS ; RANGELAND HYDROLOGY ; CONCENTRATED FLOW ; SEDIMENT YIELD ; SURFACE-ROUGHNESS ; INTERRILL EROSION ; SLOPE GRADIENT ; OVERLAND-FLOW
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405654
推荐引用方式 GB/T 7714	Dan, Chenxi,Liu, Gang,Zhang, Qiong,et al. Predicting the coupling effects of grass and shrub with biological crust on splash and sheet erosion[J],2024,244.
APA	Dan, Chenxi.,Liu, Gang.,Zhang, Qiong.,Zhao, Yunge.,Shen, Enshuai.,...&Zhao, Xining.(2024).Predicting the coupling effects of grass and shrub with biological crust on splash and sheet erosion.SOIL & TILLAGE RESEARCH,244.
MLA	Dan, Chenxi,et al."Predicting the coupling effects of grass and shrub with biological crust on splash and sheet erosion".SOIL & TILLAGE RESEARCH 244(2024).