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Effects of vegetation near-soil-surface factors on runoff and sediment reduction in typical grasslands on the Loess Plateau, China

文献类型：期刊论文

作者Li Panpan1; Wang Bing1,2; Yang Yanfen1,2; Liu Guobin1,2
刊名JOURNAL OF ARID LAND
出版日期2022-03-01
卷号14期号:3页码:325-340
关键词vegetation near-soil-surface factor grassland arid and semi-arid soil erosion Loess Plateau
ISSN号1674-6767
DOI10.1007/s40333-022-0007-y
通讯作者Yang Yanfen(yfyang@ms.iswc.ac.cn)
英文摘要Vegetation near-soil-surface factors can protect topsoil from erosion, however, their contributions to the reduction of soil erosion, especially under natural rainfall events, have not been systematically recognized. This study was performed to quantify the effects of near-soil-surface factors on runoff and sediment under natural rainfall events on grasslands dominated by Bothriochloa ischaemum (Linn.) Keng (BI grassland) and Artemisia gmelinii Thunb. (AG grassland) in two typical watersheds on the Loess Plateau, China in 2018. By successive removal of the plant canopy, litter, biological soil crusts (BSCs) and plant roots, we established five treatments including plant roots, plant roots+BSCs, plant roots+BSCs+litter, intact grassland and bare land in each grassland type. In total, twenty runoff plots (5 mx3 m) with similar slopes and aspects were constructed in the two types of grasslands. Results showed that plant canopy, litter and roots reduced runoff, while BSCs, which swelled in the presence of water, increased runoff. In contrast, all of these factors reduced sediment yield. In addition, the reductions in runoff and sediment yield increased with I-30 (maximum 30-min rainfall intensity) for each vegetation near-soil-surface factor except for BSCs. Among these factors, plant canopy had the largest contribution to runoff reduction, accounting for 48.8% and 39.9% in the BI and AG grasslands, respectively. The contributions of these vegetation near-soil-surface factors to sediment yield reduction were similar (21.3%-29.9%) in the two types of grasslands except for BSCs in the AG grassland (10.3%). The total reduction in runoff in the BI grassland (70.8%) was greater than that in the AG grassland (53.1%), while the reduction in sediment yield was almost the same in both grasslands (97.4% and 96.7%). In conclusion, according to the effects of different vegetation near-soil-surface factors on runoff and sediment production, our results may provide more complete insight and scientific basis into the effects of various vegetation related factors in controlling soil erosion.
WOS关键词FLOWING WATER EROSION ; OVERLAND-FLOW ; PLANT LITTER ; DETACHMENT ; RESISTANCE ; REGION ; IMPACT ; ROOTS ; ARCHITECTURE ; SLOPES
资助项目Chinese Academy of Sciences (CAS) Youth Scholar of West China Program[XAB2019A04] ; National Natural Science Foundation of China[42130717]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000777398400006
出版者SPRINGER HEIDELBERG
资助机构Chinese Academy of Sciences (CAS) Youth Scholar of West China Program ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/174024]  
专题中国科学院地理科学与资源研究所
通讯作者Yang Yanfen
作者单位1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.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
推荐引用方式
GB/T 7714		 Li Panpan,Wang Bing,Yang Yanfen,et al. Effects of vegetation near-soil-surface factors on runoff and sediment reduction in typical grasslands on the Loess Plateau, China[J]. JOURNAL OF ARID LAND,2022,14(3):325-340.
APA Li Panpan,Wang Bing,Yang Yanfen,&Liu Guobin.(2022).Effects of vegetation near-soil-surface factors on runoff and sediment reduction in typical grasslands on the Loess Plateau, China.JOURNAL OF ARID LAND,14(3),325-340.
MLA Li Panpan,et al."Effects of vegetation near-soil-surface factors on runoff and sediment reduction in typical grasslands on the Loess Plateau, China".JOURNAL OF ARID LAND 14.3(2022):325-340.

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来源：地理科学与资源研究所

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