干旱区生态环境知识资源中心(Arid): Water allocation and climate-impacted riparian forest dynamics in the Ejina Oasis, Northwest China

Arid

DOI	10.1016/j.dendro.2022.126001
	Water allocation and climate-impacted riparian forest dynamics in the Ejina Oasis, Northwest China
	Peng, Xiaomei; Xiao, Shengchun; Yang, Bao; Yu, Tengfei
通讯作者	Peng, XM
来源期刊	DENDROCHRONOLOGIA
ISSN	1125-7865
EISSN	1612-0051
出版年	2022
卷号	76
英文摘要	Riparian forests in natural desert oases are extremely vulnerable to water shortages; of late these shortages have been associated with climate change and with increased human-led water allocation. This study covers a hundred-year history (1876-2017) of riparian forest growth at the Ejina Oasis, which is located in the lower reaches of the Heihe River basin of northwestern China. We collected tree cores from Populus euphratica, which is the major tree species found in the Ejina riparian forests. These samples allowed us to chart variations in riparian forest growth and to examine correlations between tree growth and local precipitation, temperature, drought indices, groundwater depth, and runoff volume from the middle reaches of the river. We found that groundwater depth (groundwater being mainly recharged by runoff) is the major factor limiting tree-stem radial growth. We compared runoff reconstruction series from upper reaches and P. euphratica radial growth in the lower reaches. We found a period of greatly decreased growth (1942-1951); which seems to have been due to human water diversion. We note that mountain runoff increased after 2000, but that riparian forest growth didn't increase in tandem; the water that would otherwise have supported the forests had been diverted. Our study provides a warning for future water resource planning and suggests the desirability of policies that will balance the needs of natural ecosystems (riparian forests) with the requirements of artificial ecosystems (croplands).
英文关键词	Tree-ring width Heihe River Populus euphratica Climate change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000869631500006
WOS关键词	HEIHE RIVER-BASIN ; POPULUS-EUPHRATICA ; LOWER REACHES ; EVAPOTRANSPIRATION ; VEGETATION ; PRECIPITATION ; EVOLUTION ; RESOURCE ; RECHARGE ; SYSTEM
WOS类目	Forestry ; Geography, Physical
WOS研究方向	Forestry ; Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392218
推荐引用方式 GB/T 7714	Peng, Xiaomei,Xiao, Shengchun,Yang, Bao,et al. Water allocation and climate-impacted riparian forest dynamics in the Ejina Oasis, Northwest China[J],2022,76.
APA	Peng, Xiaomei,Xiao, Shengchun,Yang, Bao,&Yu, Tengfei.(2022).Water allocation and climate-impacted riparian forest dynamics in the Ejina Oasis, Northwest China.DENDROCHRONOLOGIA,76.
MLA	Peng, Xiaomei,et al."Water allocation and climate-impacted riparian forest dynamics in the Ejina Oasis, Northwest China".DENDROCHRONOLOGIA 76(2022).