气候变化领域集成服务门户(CCPortal): A study on ecohydrological mutual feedback relationship of the Shangdong River basin based on hydrological connectivity

CCPortal

DOI	10.1016/j.scitotenv.2024.171957
	A study on ecohydrological mutual feedback relationship of the Shangdong River basin based on hydrological connectivity
	Shijie, Pang; Lei, Wu; Yongkun, Luo; Ruowen, Wang; Tianming, Gao; Zongjun, Guo
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	927
卷号	927
英文摘要	Investigating eco-hydrology in desert grasslands is pivotal to comprehend the dynamic evolution patterns of vegetation. Nonetheless, a research void persists in understanding the eco-hydrological mutual feedback mechanisms associated with hydrological connectivity and the corresponding health index evaluation of a small watershed. This study is centered on the Shangdong River watershed in Inner Mongolia and uses SWAT (Soil and Water Assessment Tool) to simulate hydrological processes. The hydrological connectivity index (IC) was employed as a link to conduct Pearson correlation analysis and Granger causality tests on ecological and meteorological -hydrological factors. Additionally, the PSR model was utilized to assess the ecological health status of the watershed. Key findings reveal the following: (1) The NDVI in the Shangdong River watershed showed an overall upward trend from 2007 to 2018, while IC exhibited an overall downward trend. Temporally and spatially, there was a significant negative correlation between IC and NDVI. (2) During the vegetation growth season, IC serves as a pivotal link in the feedback loop of eco-hydrological processes. Temperature drives vegetation growth, which in turn affects IC. IC regulates soil moisture content and evaporation, further influencing vegetation growth, thus forming a feedback mechanism. (3) Over the study period, the Grassland Health Composite Index (GHI) demonstrated a consistent rise, averaging 0.44, signaling a suboptimal state for the grassland ecosystem. Furthermore, a negative correlation was observed between GHI and IC. Consequently, regulating IC could play a crucial role in safeguarding and rejuvenating the grassland ecosystem. This study offers theoretical and data support for understanding eco-hydrological processes and effective pasture management of the desert grassland watershed.
英文关键词	Ecohydrology; Desert grassland; Health index; Ecological restoration; Small watershed
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001229592900001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301410
作者单位	Northwest A&F University - China; China Institute of Water Resources & Hydropower Research; Northwest A&F University - China; Northwest A&F University - China
推荐引用方式 GB/T 7714	Shijie, Pang,Lei, Wu,Yongkun, Luo,et al. A study on ecohydrological mutual feedback relationship of the Shangdong River basin based on hydrological connectivity[J],2024,927.
APA	Shijie, Pang,Lei, Wu,Yongkun, Luo,Ruowen, Wang,Tianming, Gao,&Zongjun, Guo.(2024).A study on ecohydrological mutual feedback relationship of the Shangdong River basin based on hydrological connectivity.SCIENCE OF THE TOTAL ENVIRONMENT,927.
MLA	Shijie, Pang,et al."A study on ecohydrological mutual feedback relationship of the Shangdong River basin based on hydrological connectivity".SCIENCE OF THE TOTAL ENVIRONMENT 927(2024).