干旱区研究2024，Vol.41Issue(11)：1898-1907,10.DOI:10.13866/j.azr.2024.11.10
河西走廊阻沙固沙带典型荒漠植物叶功能性状
Leaf functional traits of typical desert plants in the sand-blocking and sand-fixing belt of the Hexi Corridor
摘要
Abstract
In this study,the typical desert plants,Haloxylon ammodendron and Nitraria tangutorum in the sand-blocking and sand-fixing belt of the Hexi Corridor were studied,Through the combination of field survey,sample collection,indoor analysis and statistics,To explore the adaptation strategies of desert plants to arid environment.Select Minqin oasis the sand-blocking and sand-fixing belt and Gaotai oasis the sand-blocking and sand-fixing belt.The natural vegetation sealing protection zone from the upper direction and the downwind tree irrigation shelterbelt,and the sand resistance and sand fixation belt with consistent spatial structure characteristics,Set three 10m×10m H.ammodendron quadrats and three 10 m×10 m N.tangutorum quadrats.The spatial distribution characteristics of the main leaf parameters and the environmental factors were analyzed.It aims to provide data support for the evaluation of leaf functional traits in two desert plants.Results showed that,Typical desert plants can adapt leaf functional traits to soil and climatic conditions under specific habitat conditions:(1)Leaf dry mate-rial content(LDMC)and specific leaf area(SLA)were significantly different(P＜0.05),Leaf organic carbon(LOC),leaf nitrogen(LN)and leaf phosphorus(LP)showed significant differences in the two habitats(P＜0.001).(2)Principal component analysis as indicated,The top three index factors affecting the leaf traits of Minqin plants are LN,C:N and C:P;The top three index factors affecting the leaf traits of Gaotai plants are LP,C:N and N:P.(3)Redundancy analysis showed that,soil water content(SWC),soil organic carbon(SOC),and air dryness(AD)are the main limiting environmental factors affecting the functional traits of the two desert plants.关键词
阻沙固沙带/典型荒漠植物/叶功能性状/环境因子/河西走廊Key words
the sand-blocking and sand-fixing belt/typical desert plants/leaf functional traits/environmental factors/Hexi Corridor引用本文复制引用
柴巧弟,马瑞,王安林,张富,刘腾,田永胜..河西走廊阻沙固沙带典型荒漠植物叶功能性状[J].干旱区研究,2024,41(11):1898-1907,10.基金项目
国家自然科学基金区域创新发展联合资助项目(U21A2001) （U21A2001）
