干旱区生态环境知识资源中心(Arid): Research on Vegetation Ecological Security in Arid Region Mountain Front River Valleys Based on Ecological Water Consumption and Water Demand

Arid

DOI	10.3390/land12081642
	Research on Vegetation Ecological Security in Arid Region Mountain Front River Valleys Based on Ecological Water Consumption and Water Demand
	Dong, Xiangshou; Hu, Shihang; Yuan, Quanzhi; Kou, Yaowen; Li, Shujun; Deng, Wei; Ren, Ping
通讯作者	Yuan, QZ
来源期刊	LAND
EISSN	2073-445X
出版年	2023
卷号	12 期号:8
英文摘要	The central region of the Eurasian continent is widely affected by arid conditions, but the valleys in front of the mountains nurture ecosystems consisting of forests, shrubs, and grasslands. Preserving the ecological balance in these arid valley areas is an essential aspect of water resource planning and management. This study utilizes calculations of vegetation's ecological water consumption and water requirements to quantitatively simulate groundwater levels. These simulated levels are then compared with the threshold depth suitable for vegetation, ultimately leading to the development of an ecological security assessment method for valley areas. The results show the following: (1) During 30 years, the water demand of river valley vegetation increased slowly, and the overall stability is about 4.82 x 10(8) m(3). Among them, the ecological water demand of grassland is the largest. The water demand from June to August is about 68% of the whole year. (2) The results indicate that over a period of 30 years, the groundwater levels in the valley area have shown a gradual decline. The rate of decline in groundwater levels is approximately twice as fast in areas farther away from the river compared to areas closer to the river. The decline in groundwater levels typically begins in May each year. During the period of valley flooding in June, there is a temporary rise in water levels, followed by a continued decline afterwards. (3) The study area has a significant proportion of groundwater suitable areas, accounting for approximately 65% on average annually. Over the course of 30 years, the area experiencing groundwater deficiency has increased from 31% to 37%. (4) Over the past 30 years, the ratio of annual vegetation water consumption to water demand in the river valley has been slowly decreasing, and the vegetation growth status has changed from good growth to normal growth. (5) In the past 30 years, the area of ecological quality areas has decreased significantly, and most of them have been transformed into general areas. The area of ecologically fragile areas is increasing, and the area of fencing protected areas is slowly declining.
英文关键词	northwest arid region mountain front river valleys vegetation ecological water demand ecological security numerical simulation of groundwater
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:001056858600001
WOS关键词	CLIMATE-CHANGE ; NATURAL VEGETATION ; GROUNDWATER ; CHINA ; BASIN ; REQUIREMENT ; SIMULATION ; MANAGEMENT ; REACHES ; RISK
WOS类目	Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397683
推荐引用方式 GB/T 7714	Dong, Xiangshou,Hu, Shihang,Yuan, Quanzhi,et al. Research on Vegetation Ecological Security in Arid Region Mountain Front River Valleys Based on Ecological Water Consumption and Water Demand[J],2023,12(8).
APA	Dong, Xiangshou.,Hu, Shihang.,Yuan, Quanzhi.,Kou, Yaowen.,Li, Shujun.,...&Ren, Ping.(2023).Research on Vegetation Ecological Security in Arid Region Mountain Front River Valleys Based on Ecological Water Consumption and Water Demand.LAND,12(8).
MLA	Dong, Xiangshou,et al."Research on Vegetation Ecological Security in Arid Region Mountain Front River Valleys Based on Ecological Water Consumption and Water Demand".LAND 12.8(2023).