水土保持研究2012，Vol.19Issue(1)：107-111,116,6.
黄土丘陵区植物功能性状沿气候梯度的变化规律
Trait Variations along a Climatic Gradient in Hilly Area of Loess Plateau
摘要
Abstract
More than 147 plant species in Yanhe River catchment in hilly area of Loess Plateau were selected and leaf area（LA）,leaf length/leaf width（LW）,leaf thickness（LT）,leaf dry mass（DM）,specific leaf area（SLA）,leaf tissue density（LTD）,leaf nitrogen concentration（LNC）,specific root length（SRL）,root tissue density（RTD） and root nitrogen concentration（RNC）） of 10 plant traits were determinated.Correlation analyses were used for quantifying relationships between plant traits and site climate.The results showed that：（1） functional traits of all species changed with environmental factors,and preciatation rather than temperature is the main control of trait differences along the gradient.As temperature index increased,LNC becomed higher;（2） large trait differences existed in growth forms.Grasses had higher mean LA,SLA,LNC,RNC,SRL and lower LTD than woody species,reflecting the adaptive differences of growth forms to environment;（3） trait variations of growth forms along a climatic gradient demonstrated an overall adaptation to environment,which were the combination strategies of co-evolution and divergent.The results of this research will provide basis for knowing adaptive mechanisms of plants to environment in hilly area of Loess Plateau.关键词
植物功能性状/生长型/适应策略/黄土高原Key words
plant functional trait/growth form/adaptive strategies/Loess Plateau分类
农业科技引用本文复制引用
施宇,温仲明,龚时慧,宋光,郑颖,丁曼..黄土丘陵区植物功能性状沿气候梯度的变化规律[J].水土保持研究,2012,19(1):107-111,116,6.基金项目
中国科学院重要方向项目 （）
国家自然科学基金重点项目 （）
