中国东北主要植被类型的分布与气候的关系

 本文根据吉良的热量指标和作者提出的湿度指数，研究了我国东北主要植被类型的分布与气候之间的关系：1．确定了东北地区10个水平地带性植被类型的热量分布范围和水热指标的平均值。2．研究了东北山地垂直地带性植被类型的水热指标分布特点，并用定量指标讨论了东北东部山地岳桦林带的分布、大兴安岭存在山地冻原和东北植被区域的分界线问题。

THE RELATION BETWEEN THE ZONAL DISTRIBUTION OF TYPES OF VEGETATION AND THE CLIMATE IN NORTHEAST CHINA

The present paper is a study of the relation between the zonal distribution of types of vegetation and the climate in Northeast China, based on the method of Kira's temperatureindexes WI, (Warmth index), CI, (Coldness index) and the HI (Humidity index) proposed by the present author. The results are asfollows:1. The optimum range of warmth index and the value of warmth index, coldness index and humidity index of 10 types of zonal vegetation in the Northeast China have been determined. 2. The vertical distribution features in water-temperature conditions of zonal vegetation types on mountains in Northeast China have been studied. On the basis of the above studies, the paper has discussed the problems about the distribution of Betula ermanii forest zones on the eastern mountains in Northeast China and that of the mountain tundra on the Baigalashan mountain in the Da Hingganling and made a new attempt to divide the vegetation regions in Northeast China