论文部分内容阅读
在东北林业大学哈尔滨实验林场,用离体快速称重法研究了23年生樟子松的蒸腾强度。测得樟子松的蒸腾强度是122.68 mg/g·h,蒸腾系数是140.16,蒸腾效率是7.22。樟子松的蒸腾强度与真光合呈线性相关。一方面从解剖构造上探讨了影响樟子松蒸腾作用的因素;另一方面对影响蒸腾作用的环境因子进行了单因子分析和多因子分析。结果表明,影响蒸腾作用的环境因子依次是光照强度、空气相对湿度、温度、风速及土壤含水量。
The transpiration intensity of 23-year-old Pinus sylvestris var. Mongolica was studied by in-situ rapid weighing method at Harbin Experimental Forest Farm of Northeast Forestry University. The measured transpiration intensity of Pinus sylvestris was 122.68 mg / g · h, the transpiration coefficient was 140.16 and the transpiration efficiency was 7.22. The transpiration intensity of Pinus sylvestris var. Mongolica is linearly correlated with that of true light. On the one hand, the factors influencing the transpiration of Pinus sylvestris var. Mongolica were discussed on the anatomical structure. On the other hand, the environmental factors affecting transpiration were analyzed by single factor and multi-factor analysis. The results showed that the environmental factors affecting transpiration followed by light intensity, air relative humidity, temperature, wind speed and soil moisture content.