Micro-characteristics of soil aggregate breakdown under raindrop action

doi:10.1016/j.catena.2017.10.027

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Micro-characteristics of soil aggregate breakdown under raindrop action
	Li, GL ; Fu, Y ; Li, BQ ; Zheng, TH ; Wu, FQ ; Peng, GY ; Xiao, TQ
刊名	CATENA
	2018
卷号	162 页码:354-359
关键词	Particle-size Splash Erosion Subtropical China Interrill Erosion Seal Development Slope Gradient Loess Plateau Stability Rainfall Impact
ISSN号	0341-8162
DOI	10.1016/j.catena.2017.10.027
文献子类	期刊论文
英文摘要	Raindrop splash is considered to be the first step in soil erosion, and it is also a contribution to such erosion. Aggregate breakdown due to raindrop splash causes crusting and soil erosion. In this study, the micro-characteristics of soil aggregate breakdown under the action of three sizes of raindrops were examined using synchrotron-based X-ray micro-computed tomography(SR-mu CT). The results showed that soil aggregate breakdown was related to the size of raindrops, was mainly caused by large raindrops during a rainfall event, and formed an enrichment zone, transition zone, and dense airtight zone of aggregates in the surface soil. The shape index and the amount of aggregate in the splashed soil was higher than in the un-splashed soil, especially for micro aggregate fragments (< 25 mu m). We confirm that the existence of large amounts of micro-aggregate fragments surrounding large aggregates in a rainfall event is a principle factor in the formation of soil surface seals and the clogging of pores.
语种	英语
WOS记录号	WOS:000423004800033
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/29070]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Li, GL 2.Fu, Y 3.Li, BQ 4.Zheng, TH 5.Wu, FQ 6.Peng, GY 7.Xiao, TQ
推荐引用方式 GB/T 7714	Li, GL,Fu, Y,Li, BQ,et al. Micro-characteristics of soil aggregate breakdown under raindrop action[J]. CATENA,2018,162:354-359.
APA	Li, GL.,Fu, Y.,Li, BQ.,Zheng, TH.,Wu, FQ.,...&Xiao, TQ.(2018).Micro-characteristics of soil aggregate breakdown under raindrop action.CATENA,162,354-359.
MLA	Li, GL,et al."Micro-characteristics of soil aggregate breakdown under raindrop action".CATENA 162(2018):354-359.