干旱区生态环境知识资源中心(Arid): Connectivity-mediated SOC and soil texture variation in the planted shrub ecosystem in the Loess Plateau, China

Arid

DOI	10.1016/j.catena.2024.107967
	Connectivity-mediated SOC and soil texture variation in the planted shrub ecosystem in the Loess Plateau, China
	Jin, Xiaoliang; Liu, Yu; Yu, Xiubo
通讯作者	Liu, Y
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2024
卷号	239
英文摘要	The sediment connectivity determined by hyrological processes, topography and ground cover regulates the soil redistribution, hence the sediment budget, and variation of soil properties on hillslopes. Exploring the coupling between sediment connectivity and the variation of soil properties will enhance the understanding of the role connectivity played in eco-geomorphological feedbacks. Sediment connectivity mediates the material supply and loss simultanously. There may be threshold of sediment connectivity for the soil material budget and thus the soil properties in the vegetation patches. However, scarce of quantitative linkage between the soil properties and connectivity hampered the idenfication of the threshold. This study aimed to linked the sedimentological connectivity with variation of soil orgainc carbon (SOC) and texture on hillslope in semi-arid region on the Loess Plateau in northern China. The Relative Connectivity Index (RCI_SS) integrating upslope connectivity (UC) indicating the probability of soil materials flow in and downslope connectivity (DC) describing the probability of soil resource flow out shrub patches was developed as comprehensive indicator of sedimentological connectivity. The coupling between sedimentological connectivity and the variation of SOC and soil texture was explored at the hillslope scale. Results showed that the sediment connectivity, SOC content and sand content increased from the summit to the foot slope, but the efficiency of shrub patches to retain sediment and SOC decreased. The enhanced connectivity led to the decreased efficiency of sediment and SOC retention, and the coarsening trend of soil texture. This study revealed that the sediment connectivity may contribute to the early warning of the degradation of planted shrub ecosystems from the perspective of soil properties. This study also suggested further exploration of the connectivity threshold for ecosystem state transition by adopting eco-geomorphological framework.
英文关键词	Sediment connectivity Soil organic carbon Soil texture Planted shrub the Loess Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001206658900001
WOS关键词	ECOHYDROLOGICAL FEEDBACKS ; SEDIMENT CONNECTIVITY ; EROSION ; VEGETATION ; CARBON ; WATER ; ENCROACHMENT ; REVEGETATION ; DEGRADATION ; LANDSCAPE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403145
推荐引用方式 GB/T 7714	Jin, Xiaoliang,Liu, Yu,Yu, Xiubo. Connectivity-mediated SOC and soil texture variation in the planted shrub ecosystem in the Loess Plateau, China[J],2024,239.
APA	Jin, Xiaoliang,Liu, Yu,&Yu, Xiubo.(2024).Connectivity-mediated SOC and soil texture variation in the planted shrub ecosystem in the Loess Plateau, China.CATENA,239.
MLA	Jin, Xiaoliang,et al."Connectivity-mediated SOC and soil texture variation in the planted shrub ecosystem in the Loess Plateau, China".CATENA 239(2024).