温度对森林生长速率和生物量异速生长关系的影响

为了验证温度对植物生长速率-个体生物量之间的异速生长关系的影响,分析了年平均温度在-6.6～25.2℃的中国森林数据并按照生境温度的不同划分为13个温度分组.结果表明：在忽略温度影响的条件下,10个温度分组的生长速率与个体生物量之间的异速生长指数的95%置信区间包括WBE模型预测值3/4,且该指数随年平均温度的升高而增大.在考虑温度影响的条件下,玻尔兹曼因子能够显著增加生长速率-个体生物量之间的相关性,但并不改变生长速率-个体生物量之间的异速生长指数.因此,温度对植物的生长速率-个体生物量之间的异速生长关系具有重要影响,未来对大尺度植物生长速率的异速生长的研究应当充分考虑温度的影响.

Effects of Temperature on Allometry of Forest Biomass Production Rates and Body Size

To test the influence of temperature on allometry of forest biomass production rates and body size,a large data set for Chinese forests ranging from-6.6 ℃ to 25.2 ℃ in mean annual temperature（MAT） are examined,and they are divided into 13 different temperature groups according to the difference of habitat temperature.The results show that the 95% confidence interval of scaling exponents between G and M in 10 of 13 temperature-groups included the theoretical value of 3/4,and which increased with the increasing of MAT when temperature was neglected.When all data were pooled together,and temperature was incorporated into the metabolic theory,it is found that Boltzmann factor could significantly improve the fit between G and M but did not alter the scaling exponent.Therefore,the temperature has significant effects on plant G vs. M relationship.