【摘要】 <正> 植物分布主要受气候因子制约,在气候因子中温度又起主导作用。这一观点作为植物地理学的一条原理早已为人们所接受。可是,植物分布与温度之间的定量研究工作在我国做得还比较少。日本大阪大学吉良教授(1967,1977)曾用两种热量指标(温暖指标Warmth index和寒冷指标Coldness index)分析日本森林带的分布与热量之间的关系。朝鲜学者任良宰更多还原

【Abstract】 By means of Kira’s method of two kinds of climatological indexes, the warmth index and the coldness index, the correlations between the distribution of seven everygreen broad-leaf tree species in Jiangsu and climate were analyzed:1. Thermal distribution curve of 7 tree species in Jiangsu is close to a Gaussian distribution curve essentially.2. The optimal range of warmth index were calculated by using calculating formula of PWH (peak width at half height).X =mean S= standard deviation.PWH =2.354·S optimal range = X-1/2-FWH, X+1/2PWH.3. The whole range of thermal distribution of nine momths is 67-225℃. Mean optimal range is 110-170℃. The average coldness index values of three winter months limiting the northward distribution of tree species being -4.9℃.4. The warmth index value and the coldness index value of everygreen broad-leaf tree species and everygreen broad-leaf forest in China is larger than those of the Korean peninsula and Japanese, for the climate of China is more continental and the chinese latitudes of distribution lie farther south than those of two countries aforementioned.更多还原