干旱区生态环境知识资源中心(Arid): Revealing the role that epikarst fissures filled with soil play in soil erosion and nutrient loss in karst rocky desertification region of Guizhou, China

Arid

DOI	10.1016/j.ejrh.2023.101645
	Revealing the role that epikarst fissures filled with soil play in soil erosion and nutrient loss in karst rocky desertification region of Guizhou, China
	Xiong, Bailian; Gao, Yang; Liu, Junlong; Yan, Xiong
通讯作者	Xiong, BL
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2024
卷号	51
英文摘要	Study region: Karst region in Guizhou Province, China. Study focus: Epikarst fissure filled with soil (EFS) is an important pathway connecting the karst surface with karst underground pipelines, and a vital soil resource bank in rocky desertification regions. Being buried underground, EFS is difficult to study, and the characteristics and control mechanism of soil erosion and nutrient loss in EFS need to be further investigated. In this work, we constructed a simulated experimental device that separated the EFS from the whole karst slope, and studied the role of EFS in soil erosion and nutrient loss in karst rocky desertification region. New hydrological insights for the region: Sediment erodes from the bottom of EFS. The scouring effect surpasses the dilution effect, and dominating the process of carbon and nitrogen loss in the EFS. The 0-30 cm soil layer of EFS profile intercepts part of carbon and nitrogen in slope runoff, with a higher interception rate for carbon compared to nitrogen, thereby reducing the C/N ratio in underground runoff. EFS is an important pathway for dissolved total carbon (DTC) and dissolved total nitrogen (DTN) loss. These results reveal the important roles of EFS in soil erosion and C and N loss in karst rocky desertification region, and are promising to provide a theoretical basis on the application of EFS to the ecological restoration in this region.
英文关键词	Epikarst fissure filled with soil Rocky desertification slope Underground runoff Soil erosion Nutrient loss
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001164808100001
WOS关键词	BARE SLOPES ; LAND-COVER ; CARBON ; RAINFALL ; NITROGEN ; RUNOFF ; AREA ; QUALITY
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404619
推荐引用方式 GB/T 7714	Xiong, Bailian,Gao, Yang,Liu, Junlong,et al. Revealing the role that epikarst fissures filled with soil play in soil erosion and nutrient loss in karst rocky desertification region of Guizhou, China[J],2024,51.
APA	Xiong, Bailian,Gao, Yang,Liu, Junlong,&Yan, Xiong.(2024).Revealing the role that epikarst fissures filled with soil play in soil erosion and nutrient loss in karst rocky desertification region of Guizhou, China.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,51.
MLA	Xiong, Bailian,et al."Revealing the role that epikarst fissures filled with soil play in soil erosion and nutrient loss in karst rocky desertification region of Guizhou, China".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 51(2024).