摘要
为探究荒漠植物对极端干旱环境的响应,对额济纳绿洲胡杨5个叶功能性状及其对水土异质性的响应进行测定与分析。结果显示:胡杨叶功能性状具有不同程度的变异幅度,变异系数最大的为比叶面积;比叶面积与叶片厚度呈显著负相关,与叶氮、磷含量呈显著正相关,其是反映胡杨适应干旱环境的关键指标;地下水与土壤含水率对胡杨叶性状解释率最高,表明水分是胡杨叶性状的主要影响因素,可以通过合理的分水措施对胡杨种群进行加以保护。
The five leaf functional traits of Populus euphratica and its response to soil and water heterogeneity were measured and analyzed in Ejina Oasis to study the response of desert plant to extreme drought environment.The results showed that the leaf functional traits were different in degrees of variation,and the largest variation coefficient was specific leaf area,which was negatively correlated with leaf thickness and positively correlated with leaf nitrogen and phosphorus concentration,and could be the key index reflecting adaptability of P.euphratica to drought stress.The groundwater and the soil moisture were the main factors of P.euphratica leaf traits,and P.euphratica populations could be protected by rational water resources allocation.
作者
马万飞
何奕成
王寅
李景文
MA Wanfei;HE Yicheng;WANG Yin;LI Jingwen(Ejina Water Authority,Ejina,Inner Mongolia 735400,China;College of Forestry,Beijing Forestry University,Beijing 100083,China)
出处
《林业调查规划》
2020年第3期152-157,共6页
Forest Inventory and Planning
基金
国家自然科学基金项目(31570610)。
关键词
胡杨
叶功能性状
水分条件
相关性分析
环境因子
额济纳绿洲
Populus euphratica
leaf functional trait
water condition
correlation analysis
environmental factor
Ejina Oasis
