广西植物2026，Vol.46Issue(2)：311-319,9.DOI:10.11931/guihaia.gxzw202503032
滇西北水蓼叶功能性状的关联性及其对气候因子的响应
Correlations of leaf functional traits of Persicaria hydropiper and its responses to climatic factors in Northwest Yunnan
摘要
Abstract
The study of the response of wetland plants to climate change is the foundation for understanding the response of wetland ecosystem to climate change.This study took Persicaria hydropiper,one type of emergent aquatic plant in the lakeside zone of Jianhu,Lashihai,Luguhu and Napahai in Northwest Yunnan,as the research object.The species'functional traits were measured,the altitude and climatic factors of four sampling sites were collected,and the relationship between functional traits of P.hydropiper and climatic factors was detected through redundancy analysis to explore climate response variations of these functional traits.The results were as follows:(1)The stomatal density and leaf mass per area of P.hydropiper significantly increased with the increase of altitude,however,stomatal conductance,conduit area,stomatal area,leaf carbon mass fraction,and leaf nitrogen mass fraction significantly decreased with increasing altitude(P＜0.05).(2)The mean annual temperature,mean annual precipitation,and mean annual air relative humidity were the main climatic factors affecting the functional traits of P.hydropiper.The species preferred to grow in low altitude habitats with relatively high temperature,precipitation,and air humidity.(3)There was a functional correlation between the functional traits of P.hydropiper.Net photosynthetic rate was significantly and positively correlated with leaf vein density,leaf mass per area,and leaf phosphorus mass fraction,while it was significantly and negatively correlated with sieve tube area(P＜0.05).Stomatal conductance and transpiration rate were significantly and positively correlated with stem diameter,stomatal size,and leaf carbon mass fraction.Transpiration rate was also significantly and positively correlated with plant height(P＜0.05).This study reveals the main environmental factors that affect the functional traits of P.hydropiper,and provides scientific data for its functional adaptability in the context of climate change.关键词
高原湿地/植物功能性状/响应策略/海拔/气候因子Key words
plateau wetland/plant functional trait/responsive strategy/altitude/climatic factor分类
农业科技引用本文复制引用
康瑶瑶,赵旭燕,李玲艳..滇西北水蓼叶功能性状的关联性及其对气候因子的响应[J].广西植物,2026,46(2):311-319,9.基金项目
国家自然科学基金(31600395) （31600395）
云南省科技计划项目-农业联合专项(202101BD070001-099). （202101BD070001-099）
