干旱区生态环境知识资源中心(Arid): Variation and coordination among the plant functional traits of three coexisting shrub species in arid conditions

Arid

DOI	10.1016/j.envexpbot.2024.105925
	Variation and coordination among the plant functional traits of three coexisting shrub species in arid conditions
	Zhao, Wenyue; Ji, Xibin; Du, Zeyu; Jin, Bowen; Zhao, Liwen; Chen, Rui; Zhou, Hai
通讯作者	Ji, XB
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	Functional traits are critical indicators for assessing and predicting plant environmental adaptations and survival strategies. However, less attention has been paid to root functional traits due to the costly and destructive nature of field excavations. This has resulted in a poor understanding of organ trait associations and vegetation survival strategies, particularly for plants in arid environments. In this study, we investigated 11 classical plant functional traits (leaf, stem, and root) and the intact root systems of three dominant coexisting shrubs, Calligonum mongolicum, Nitraria sphaerocarpa, and Haloxylon ammodendron, in a typical oasis-desert ecotone in northwestern China. These three coexisting shrubs generally converge on conservative resource strategies with dimorphic root systems and small leaf mass fractions to cope with strong habitat filtering and survive in arid environments. However, we found significant interspecific divergences in functional traits. Specifically, C. mongolicum had the most conserved traits, the medium root depth (370 cm), and the highest root-shoot ratio (1.72). H. ammodendron had relatively conserved traits, with the most extensive root depth (420 cm, access to groundwater) and the lowest root-shoot ratio (0.45). N. sphaerocarpa had the least conservative traits, the shallowest root depth (200 cm), and the medium root-shoot ratio (1.14). These divergences promote ecological niche segregation and ensure the stable coexistence of shrubs in this resource-limited environment. In contrast to the whole-plant economics spectrum, there was limited coordination between aboveground and belowground functional traits across the three species. Therefore, it is speculated that the different organs of these three species may operate independently to manage different constraints. The deep-rooted H. ammodendron is highly dependent on groundwater; therefore, planting them extensively in the ecotone may increase local groundwater consumption, resulting in the severe degradation of these species, particularly in the context of consecutive oasis expansion and intensified climate change. These results are expected to contribute to the development of effective ecosystem restoration and afforestation practices in such oasis-desert ecotones.
英文关键词	Leaf traits Stem traits Root traits Root-shoot ratio Xeric shrub species Dryland ecosystems
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001289651400001
WOS关键词	ECONOMICS SPECTRUM ; DESERT ; WATER ; LEAF ; RESPONSES ; REGIONS ; ECOTONE ; STEM
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/2XILL650/403539
推荐引用方式 GB/T 7714	Zhao, Wenyue,Ji, Xibin,Du, Zeyu,et al. Variation and coordination among the plant functional traits of three coexisting shrub species in arid conditions[J],2024,226.
APA	Zhao, Wenyue.,Ji, Xibin.,Du, Zeyu.,Jin, Bowen.,Zhao, Liwen.,...&Zhou, Hai.(2024).Variation and coordination among the plant functional traits of three coexisting shrub species in arid conditions.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,226.
MLA	Zhao, Wenyue,et al."Variation and coordination among the plant functional traits of three coexisting shrub species in arid conditions".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 226(2024).