干旱区研究2025，Vol.42Issue(3)：480-488,9.DOI:10.13866/j.azr.2025.03.08
河西走廊荒漠植物优势种叶片功能性状变异及权衡
Variation and trade-offs in leaf functional traits of dominant desert plant species in Hexi Corridor
摘要
Abstract
The characteristics of variation in leaf functional traits of different plant types(shrubs,herbaceous plants)in Hexi Corridor and the relationships between these functional traits are extremely important for main-taining the stability of the ecosystem in this region.To explore the mechanisms of adaptation and the ecological strategies of different plant life forms in arid environments,we established survey sites in the eastern,central,and western sections along Hexi Corridor,following a gradient of decreasing natural precipitation from southeast to northwest.We selected 26 dominant desert plant species,including 14 shrubs and 12 herbaceous plants,and ana-lyzed their variability and regional patterns of 14 key leaf functional traits.We also investigated the trade-offs and adaptive strategies among these traits.The following results were obtained:(1)The coefficient of variation for leaf-bound water content(BW),carbon to phosphorus ratio(C:P),plant height(H),and leaf free water content(FW)of dominant desert plant species in the Hexi Corridor exceeds 100%.(2)Plants in different regions of Hexi Corridor displayed diverse survival strategies:plants in the eastern section adopted a"slow-return"strategy,shrubs and herbaceous plants in the central section exhibited"slow-return"and"fast-return"strategies respective-ly,while shrubs in the western section adopted a"rapid resource acquisition"strategy under resource-rich condi-tions,and herbaceous plants adopted a"slow-return"strategy under unfavorable soil conditions.The survival strategies of plants are influenced by multiple ecological factors,and they adapt to arid environments through trait optimization and resource allocation.关键词
荒漠植物/功能性状/叶经济谱/河西走廊Key words
desert plants/functional traits/leaf economics spectrum/Hexi Corridor引用本文复制引用
李善家,李来周,缪潆祥,苟伟,苏培玺..河西走廊荒漠植物优势种叶片功能性状变异及权衡[J].干旱区研究,2025,42(3):480-488,9.基金项目
国家自然科学基金项目(41961007) （41961007）
中国科学院寒旱区陆面过程与气候变化重点实验室开放基金项目(LPCC2023003) （LPCC2023003）
