干旱区生态环境知识资源中心(Arid): Pattern of water use by Tamarix ramosissima seedlings in floodplains under varied groundwater depths in the hinterland of the Taklimakan Desert

Arid

DOI	10.1016/j.envexpbot.2024.105912
	Pattern of water use by Tamarix ramosissima seedlings in floodplains under varied groundwater depths in the hinterland of the Taklimakan Desert
	Abdureyim, Anwar; Erkin, Flora; Shi, Qingdong; Dai, Yue
通讯作者	Dai, Y
来源期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
EISSN	1873-7307
出版年	2024
卷号	226
英文摘要	The water use of Tamarix ramosissima Ledeb. seedlings after flooding were analyzed both to explore the maintenance mechanism and pattern of natural regeneration of riparian forest, which will provide a scientific basis for restoration of desert riparian forest and ecosystem stability in the lower reaches of inland rivers of arid regions. This study area was located in the hinterland of the Taklimakan Desert in Xinjiang, China. Tamarix ramosissima seedlings growing on different groundwater depths at the river floodplain were used as the study system. The rooting depths of T. ramosissima seedlings with different basal stem diameters were ascertained by the root excavation method. The water source for the T. ramosissima seedlings was clarified using hydrogen and oxygen stable isotope methods, and the water use efficiency of T. ramosissima seedlings was investigated by stable carbon isotope (delta 13C) analysis. As the basal stem diameter classes of the T. ramosissima seedlings increased, their root depths increased. As the groundwater depth increased, the seedlings changed from primarily utilizing deep soil water to utilizing shallow soil water. In the three sample sites, the average depth of water uptake of the seedlings with basal stem diameters of 0-5 mm was 110.5, 44.1 and 39.1 cm, respectively, and that of seedlings with basal stem diameters of 5-11 mm was 83.8, 73.6 and 37.7 cm, respectively. As groundwater depth increased, the average water uptake depth of the seedlings gradually became shallower. There was no significant difference in the delta 13C values of leaves under different groundwater depths, indicating that the seedlings were not subjected to water stress. Thus, surface water played a greater role than groundwater in T. ramosissima seedling water utilization. Therefore, when analyzing ecological water conveyance patterns, attention should be paid to T. ramosissima located in areas with deep groundwater. Shallow-rooted seedlings with small basal stem diameters face an increased risk of wilting if they do not receive timely recharges of surface water. Data Availability: All data generated or analyzed during this study are included in this published article.
英文关键词	Daliyaboyi Oasis Desert riparian forest MixSIAR model Root depth Water use efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001276442200001
WOS关键词	DROUGHT TOLERANCE ; RIVER-BASIN ; PLANT ; TRAITS ; GROWTH ; LEAF
WOS类目	Plant Sciences ; Environmental Sciences
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403538
推荐引用方式 GB/T 7714	Abdureyim, Anwar,Erkin, Flora,Shi, Qingdong,et al. Pattern of water use by Tamarix ramosissima seedlings in floodplains under varied groundwater depths in the hinterland of the Taklimakan Desert[J],2024,226.
APA	Abdureyim, Anwar,Erkin, Flora,Shi, Qingdong,&Dai, Yue.(2024).Pattern of water use by Tamarix ramosissima seedlings in floodplains under varied groundwater depths in the hinterland of the Taklimakan Desert.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,226.
MLA	Abdureyim, Anwar,et al."Pattern of water use by Tamarix ramosissima seedlings in floodplains under varied groundwater depths in the hinterland of the Taklimakan Desert".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 226(2024).