干旱区生态环境知识资源中心(Arid): Hydrologic response in a typical karst desertification catchment

Arid

DOI	10.1007/s13146-024-00929-6
	Hydrologic response in a typical karst desertification catchment
	Li, Yuan; Zhou, Qiuwen; Zhao, Yuluan
通讯作者	Zhou, QW
来源期刊	CARBONATES AND EVAPORITES
ISSN	0891-2556
EISSN	1878-5212
出版年	2024
卷号	39 期号:2
英文摘要	Karst desertification areas exhibit high spatial heterogeneity, extensive rock exposure and systems with a complex hydrological structure. Understanding runoff generation mechanisms is important for the interpretation of hydrological processes in karst critical zones. A typical karst desertification catchment in Southwest China was selected for a 2-year hydrological observation study of rainfall events, and rainfall-runoff characteristics and hydrological responses were studied. The results showed that very high rainfall infiltration occurs in the catchment, with an average runoff coefficient of 3.6%, and the runoff coefficient during most rainfall events ranges from 0.01 to 0.05%. The rainfall-runoff process is comprehensively affected by the landform characteristics, rocky desertification environment and epikarst infiltration system in the catchment. The rocky desertification hillslopes in the upper and middle reaches of the catchment are characterized by high permeability and low water-holding capacity because of the large areas of exposed rocks and fissures, which amplify the epikarst precipitation infiltration rate. Depressions in the lower reaches result in an increase in the retention time of water in the epikarst, which exhibits low permeability and high water-holding capacity. In this study, it was revealed that antecedent hydrological conditions significantly impact runoff generation processes in catchments. Runoff in the catchment mainly comprises old water (> 50%), and continuous rainfall events lead to a gradual increase in the proportion of new water.
英文关键词	Karst Rocky desertification Rainfall event Hydrologic response Hydrograph separation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001173211700001
WOS关键词	GROUNDWATER-FLOW ; RUNOFF PROCESSES ; STABLE-ISOTOPES ; LAND-COVER ; WATER ; AQUIFER ; STORAGE ; INFILTRATION ; DISCHARGE ; HILLSLOPE
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403106
推荐引用方式 GB/T 7714	Li, Yuan,Zhou, Qiuwen,Zhao, Yuluan. Hydrologic response in a typical karst desertification catchment[J],2024,39(2).
APA	Li, Yuan,Zhou, Qiuwen,&Zhao, Yuluan.(2024).Hydrologic response in a typical karst desertification catchment.CARBONATES AND EVAPORITES,39(2).
MLA	Li, Yuan,et al."Hydrologic response in a typical karst desertification catchment".CARBONATES AND EVAPORITES 39.2(2024).