生态环境学报Issue(1)：49-56,8.DOI:10.16258/j.cnki.1674-5906.2015.01.008
元谋干热河谷植物功能性状组合的海拔梯度响应
The Response of Plant Functional Traits’ Group to Gradients of Altitude in Dry-hot Valley of Yuan-Mou
摘要
Abstract
The variation of environment is responded by plant functional traits, meanwhile, the different groups of plant functional trait have different ecological strategies of adaption. It is a main factor that is water restriction in dry-hot valleys and the effect of Foehn effect result the variation of water stress had changed along gradients of altitude. A number of researches have focused on local of dry-hot valleys, but the researchs of variation of different species, under the different circumstance, are not well understood in the gradient of elevation. In general, the temperature and evaporation will decrease, moisture, precipitation and solar radiation will increase along increase gradients of altitude. We used five plant functional traits, which is Leaf dry matter content (LDMC), Leaf area (LA), Specific leaf area (SLA), Leaf thickness (LT) and Leaf density (LD), to research the relationship among those traits and compared the variation among four altitudes (1 491.33, 1 730.20, 1 850.00, 1 925.57 m, respectively) in dry-hot valley of Yuan-Mou, Yunnan province. We found that: 1) there was variation that the coefficients from high to low level were LD>LA>SLA>LT>LDMC(101%, 64%, 56%, 41% and 19%, respectively), of five plant functional traits among altitudes. The ANOVA suggest the significant different of plant functional traits among altitudes especially the significant different from highest (1 491.33 mm) and lowest (1 927.57 mm) altitude (F=56.218, P<0.01; F=7.829, P<0.01; F=11.21, P<0.01; F=7.429, P<0.01;F=19.213, P<0.01, respectively);2) there were strong negative correlations between LD and LA, SLA, LT, except LDMC;strong negative correlations between LDMC and LA, LT;positive correlations between SLA and LA, LT, and negative correlated LDMC;positive correlations between LT and SLA, and non-correlated with LA;3) there were allometric scaling among group of functional traits. The results indicate that the response of plant functional traits’ group to change of hydrologic environmental gradients of altitude in dry-hot valley of Yuan-Mou. There are variation and different of group of leaf functional traits for different adaption strategies along altitude gradients.关键词
海拔梯度/环境响应/适应对策/功能性状组合Key words
altitude’s gradient/environmental response/adaption strategies/functional traits’ group分类
农业科技引用本文复制引用
杨锐,张博睿,王玲玲,杨建军,苏文华,张光飞,杨波,周睿..元谋干热河谷植物功能性状组合的海拔梯度响应[J].生态环境学报,2015,(1):49-56,8.基金项目
国家自然科学基金项目 （）
