干旱区生态环境知识资源中心(Arid): Water use characteristics of coexisting sand-binding vegetation in two typical soil habitats in the desert steppe of China

Arid

DOI	10.1002/hyp.15159
	Water use characteristics of coexisting sand-binding vegetation in two typical soil habitats in the desert steppe of China
	Chen, Xiaoying; Chen, Lin; Yang, Xinguo; Li, Minlan; Yang, Shuangqi; Yu, Dian; Song, Naiping
通讯作者	Chen, L ; Song, NP
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2024
卷号	38 期号:5
英文摘要	Understanding the water use characteristics and water relationship of coexisting vegetation in a mixed-species plantation of trees and shrubs is crucial for the sustainable restoration of degraded arid areas. This study investigated the water use characteristic of coexisting sand-binding vegetation combinations in the sierozem habitat (Populus przewalskii Maxim namely Populus-S and Caragana liouana) and aeolian sandy soil habitats (Populus przewalskii Maxim namely Populus-A and Salix psammophila) of the desert steppe. By analysing the delta 2H and delta 18O isotopes in xylem, soil water, groundwater and precipitation, a Bayesian MixSIAR model was employed to quantitatively assess the water utilization characteristics of plants. Throughout the growing season, in the sierozem habitat, C. liouana exhibits the highest efficiency in utilizing soil moisture above 60 cm (53.45%) and displays adaptable water use strategies. In contrast, Populus-A predominantly relies on deep soil moisture below 60 cm plus groundwater (63.89%). In the aeolian sandy soil habitat, both Populus-A and S. psammophila similarly favour deep soil moisture below the 60 cm soil plus groundwater (66.77% and 67.60%, respectively). During the transition period from the dry to the wet seasons, although both Populus-A and S. psammophila in the aeolian sandy soil habitat shifted their water sources from deeper to shallower ones, there was considerable overlap in the water sources used by Populus-A and S. psammophila. This overlap led to competition for water resources and exacerbated the depletion of deep soil moisture in both seasons. Conversely, in the sierozem habitat, the partitioning of water sources between Populus-S and C. liouana facilitated the allocation and utilization of water resources between the two species. The findings highlight the need for species-specific consideration in water resource allocation within mixed-species plantations of trees and shrubs, which is crucial for sustainable vegetation restoration in sand-binding ecosystems. In the sierozem habitat, C. liouana showed the highest utilization efficiency of water in the soil above 60 cm (53.45%), whereas Populus-S more consistently relied on deeper soil water and groundwater below 60 cm (63.89%), coexisting species optimize water resource allocation. In the aeolian sandy soil habitat, Populus-A and S. psammophila prefer deep soil water and groundwater below 60 cm (66.77% and 67.60%, respectively), coexisting species compete for water sources. The overlapping and partitioning of hydrological niches among coexisting species were found to be species-specific. image
英文关键词	coexisting sand-binding vegetation desert steppe MixSIAR soil habitats water use characteristics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001226374300001
WOS关键词	SEASONAL-VARIATIONS ; TIANSHAN MOUNTAINS ; PLANT-COMMUNITIES ; USE STRATEGIES ; LOESS PLATEAU ; ROOT SYSTEMS ; IN-DEPTH ; PATTERNS ; ISOTOPES ; DROUGHT
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404115
推荐引用方式 GB/T 7714	Chen, Xiaoying,Chen, Lin,Yang, Xinguo,et al. Water use characteristics of coexisting sand-binding vegetation in two typical soil habitats in the desert steppe of China[J],2024,38(5).
APA	Chen, Xiaoying.,Chen, Lin.,Yang, Xinguo.,Li, Minlan.,Yang, Shuangqi.,...&Song, Naiping.(2024).Water use characteristics of coexisting sand-binding vegetation in two typical soil habitats in the desert steppe of China.HYDROLOGICAL PROCESSES,38(5).
MLA	Chen, Xiaoying,et al."Water use characteristics of coexisting sand-binding vegetation in two typical soil habitats in the desert steppe of China".HYDROLOGICAL PROCESSES 38.5(2024).