矮嵩草草甸功能群植物生长特征与地表温度的相关性分析

THE STUDY ON CORRELATION BETWEEN GROWING CHARACTER OF CYPERACEOUS FUNCTIONAL GROUPS SPECIES AND GROUND TEMPERATURE IN KOBRESIA MEADOW

基于国际冻原计划(ITEX)模拟增温效应对植物影响的研究方法,设置温度梯度,从物种个体水平研究了莎草科功能群植物生长特征与地表温度的相关性。结果表明:莎草科功能群除了黑褐苔草的高度与地表温度呈线性关系外,矮生嵩草与黑褐苔草的分蘖数、叶片数、高度与地表温度均呈二次函数形式变化,说明少量增温有利于该功能群植物的生长发育,但持续增温则不利于该功能群植物的生长发育。

Based on the International Tundra Experiment（ITEX） method,using temperature gradient,the correlation between Cyperaceous plant of functional group and ground temperature was studied in Kobresia meadow from the individual level.The results showed that there are quadratic function between tillers number,leaves number,height of Kobresia humilis,Carex alrofusca and ground temperature,but line function between height of Carex alrofusca and ground temperature in cyperaceous functional group.The results showed that a small increase in temperature is conducive to clonal growth,on the contrary,a large increase in temperature is not good for clonal growth.