内蒙古几种乡土杨树生长量与适应性指标的关联分析

A CORRELATIVE ANALYSIS OF ADAPTIVE CRITERIA AND GROWTH INCREMENT OF ABORIGINAL POPLARS IN INNER MONGOLIA

本文用关联分析方法分析了内蒙古几种乡土杨树生长量与适应性指标的关系，指出了影响内蒙古几种乡土杨树苗期高生长量的气候因子主要是温度，其次是水分，光照条件影响最小；对内蒙古几种乡土杨树材积生长量影响较大的抗性指标依次为Ｋ￣＋外渗量、蒸腾速率、叶片基态渗透值、组织褐变值、气孔扩散阻力、叶片失水率。

This paper,using the correlative analysis mothod,analyses the relations betweenthe adaptive criteria and the growth incremeiit of aboriginal poplars in Inner Mongolia andpoints out that the climatic factors,which affecting the height growth increment in theseedling stage,are mainly temperature,then water, light condition;and the resistant criteriaswhich are more important to the volume increment are K￣+ exosmosis capacity,transpirationratio,the permeability constant of leat ground state,the brown stain value of tissue,stomatadiffusion resistance and leat water deficit ratio in turn.