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Combined impact of moss crust coverage rates and distribution patterns on wind erosion using beryllium-7 measurements

文献类型：期刊论文

作者Zhang, Jiaqiong2,4; Li, Yuanyuan2,3; Yang, Mingyi1,2,4; Ma, Bo2,4
刊名CATENA
出版日期2022-04-01
卷号211页码:12
ISSN号0341-8162
关键词Beryllium-7 measurements Moss crust Wind erosion Sediment flux Landscape metrics
DOI10.1016/j.catena.2021.106005
通讯作者Yang, Mingyi(ymyzly@163.com)
英文摘要Although biological soil crusts (BSCs) provide considerable control over wind erosion in arid and semiarid regions, understanding of BSCs coverage rates and distribution patterns impacts on wind erosion is remain limited, which further causes poor quantification of BSCs factors in wind erosion prediction models. This study estimated wind erosion affected by moss crust coverage rates and distribution patterns using the weighting approach and beryllium-7 measurements through wind tunnel experiments, and screened factors that significantly influence wind erosion based on landscape metrics and multiple linear regression. Results showed that both moss crust coverage and distribution pattern significantly affected wind erosion and deposition. When moss crust coverage increased from 10% to 80%, average erosion rates in bare soil areas of trays almost all decreased logarithmically from 623.0 to 27.4 g m(- 2) min(-1), while the average deposition rates in moss crust covered areas decreased from-21.7 to-16.7 g m(- 2) min-1. Moss crust located at the middle area of trays (SCS) showed better overall erosion control effects, while moss crust located at downwind of sand (SC) showed better sediment trapping effects compared to other distribution patterns when moss crust coverage was the same. The SCS and SC patterns decreased wind erosion and deposition rates reached up to 81.9% and 38.0%, respectively. Moreover, wind erosion rates when arranged moss crust parallel to the wind direction resulted in significantly higher soil erosion (i.e., by a factor up to 7.3) compared to that of perpendicular to the wind direction. Stepwise regression showed that only wind velocity and moss crust coverage were included in the linear regression equation with a relatively low R2 value (R-2 = 0.35), but excluded other landscape metrics. This is indicated the importance of developing composite indices and their associative algorithms should be considered when quantifying spatial distribution impacts of BSCs on wind erosion.
WOS关键词BIOLOGICAL SOIL CRUSTS ; LOESS PLATEAU ; CRISSCROSS REGION ; SPATIAL-DISTRIBUTION ; LANDSCAPE PATTERNS ; SLOPING FIELDS ; RUNOFF ; ROUGHNESS ; VELOCITY ; TILLAGE
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA28010201] ; National Natural Science Foundation of China[41771311]
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
出版者ELSEVIER
WOS记录号WOS:000790436600001
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/176688]  
专题中国科学院地理科学与资源研究所
通讯作者Yang, Mingyi
作者单位1.CAS Ctr Excellence Quaternary Sci & Global Change, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Inst Water & Soil Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450001, Peoples R China
4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jiaqiong,Li, Yuanyuan,Yang, Mingyi,et al. Combined impact of moss crust coverage rates and distribution patterns on wind erosion using beryllium-7 measurements[J]. CATENA,2022,211:12.
APA Zhang, Jiaqiong,Li, Yuanyuan,Yang, Mingyi,&Ma, Bo.(2022).Combined impact of moss crust coverage rates and distribution patterns on wind erosion using beryllium-7 measurements.CATENA,211,12.
MLA Zhang, Jiaqiong,et al."Combined impact of moss crust coverage rates and distribution patterns on wind erosion using beryllium-7 measurements".CATENA 211(2022):12.

入库方式： OAI收割

来源：地理科学与资源研究所

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