文献类型：期刊文献

中文题名：黄河乌兰布和沙漠段不同生长时期植物叶功能性状特征

英文题名：Characteristics of leaf functional traits of plants at different growth stages in the Ulan Buhe desert section of the Yellow River

作者：郝需婷[1,2,3] 黄雅茹[1,2] 张帅[1] 崔健[1,2] 王浩伊[1,3] 郝惠忠[4] 马迎宾[1,2,3]

第一作者：郝需婷

机构：[1]中国林业科学研究院沙漠林业实验中心,巴彦淖尔015200;[2]国家林业草原防沙治沙工程技术研究中心,巴彦淖尔015200;[3]内蒙古磴口荒漠生态系统国家定位观测研究站,巴彦淖尔015200;[4]内蒙古河套灌区水利发展中心乌拉特分中心长济渠供水所,巴彦淖尔014400

年份：2025

卷号：45

期号：5

起止页码：2386-2400

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：;北大核心:【北大核心2023】；

基金：中央引导地方科技发展资金(2021ZY0058);国家自然科学基金(32001374);内蒙古自治区自然科学基金项目(2023QN03008,2024MS03038)。

语种：中文

中文关键词：旱柳;梭梭;叶功能性状;不同生长时期;气象因子;适应策略

外文关键词：Salix matsudana;Haloxylon ammodendron;leaf functional traits;different growth stages;meteorological factors;adaptation strategy

分类号：Q94

摘要：揭示黄河乌兰布和沙漠地区旱柳和梭梭叶功能性状在不同生长时期的变异规律,探明旱柳和梭梭对该区特殊环境的适应策略。以黄河乌兰布和沙漠段旱柳(Salix matsudana)和梭梭(Haloxylon ammodendron)为研究对象,在生长初期(5月初)、生长旺盛期(7月初)、生长末期(9月初)3个时期分别测定14个叶功能性状,分析不同生长时期叶功能性状的变异与性状间的相关性及其对气象因子的响应。结果表明:(1)在不同生长时期,2种植物的叶功能性状均发生不同程度变异,其中,梭梭叶干重、旱柳相对水分亏缺变异系数最大,分别为91.78%、45.74%,2种植物的叶碳稳定同位素比率(δ^(13) C)变异系数均为最小(均小于5%);旱柳叶含水量、叶宽、叶形指数,梭梭、比叶面积、比叶重在生长初期、旺盛期、末期间均存在显著差异(P<0.05)。(2)梭梭叶功能性状间的相关性较旱柳高;叶长、δ^(13)C是两种植物叶功能性状中综合排名前3的共同指标因子。(3)气象因素分别解释了旱柳23.89%、梭梭26.87%的叶功能性状变异,其中比湿度和降水分别是影响旱柳、梭梭叶功能性状的主要气象因子;比湿度和晴空表面有效辐射总数是共同影响两种植物叶功能性状的气象因子。植物可以通过改变叶功能性状及性状间的权衡关系,调整资源获取能力和物质分配去适应复杂的环境变化,形成最适生存策略。
By Investigating the variation patterns of functional traits in Salix matsudana and Haloxylon ammodendron leaves across different growth stages in the Yellow River Ulan Buhe Desert region,this study explore how these species adapt to the unique environmental conditions of the area.Salix matsudana and Haloxylon ammodendron in the Ulan Buhe Desert section of the Yellow River were selected as research subjects,with 14 leaf functional traits measured across three growth stages:early(early May),peak(early July),and late(early September).The variation and correlation of leaf functional traits at different growth stages,as well as their response to meteorological factors,were analyzed.The results showed that:(1)Leaf functional traits of both species exhibited varying degrees of variation across different growth stages.Among them,the coefficient of variation of leaf dry weight of Haloxylon ammodendron and relative water deficit of Salix matsudana were the highest,at 91.78%and 45.74%,respectively.The coefficient of variation of leaf carbon stable isotope ratio(δ^(13)C)of both plants was the smallest(both less than 5%);There were significant differences(P<0.05)in the water content,leaf width,and leaf shape index of dry willow leaves,as well as in the water content,specific leaf area,and specific leaf weight of Haloxylon ammodendron during the early,vigorous,and late stages of growth.(2)The correlation between functional traits of Haloxylon ammodendron leaves exceeds that in Salix matsudana leaves;Leaf length andδ^(13)C consistently emerge as key indicators,ranking among the top three comprehensive functional traits of two plant leaves.(3)Meteorological factors explained 23.89%of the variation in leaf functional traits of Salix matsudana and Haloxylon ammodendron,with specific humidity(QV)and precipitation(PCP)being the main meteorological factors affecting leaf functional traits of Salix matsudana and Haloxylon ammodendron,respectively;QV and total effective radiation on clear sky surfaces(PAR)are meteorological factors that jointly affect leaf functional traits of two plant species.Plants adapt to complex environmental changes by modifying leaf functional traits and balancing trait relationships,thus optimizing survival strategies through adjustments in resource acquisition and material allocation.