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本文应用剪枝称重法进行了23年生红皮云杉蒸腾强度的研究。红皮云杉蒸腾强度的日进程,春、秋季呈单峰型,夏季呈双峰型,在春季的夜间有微弱的蒸腾作用,生长季内的月进程以七月份为高峰期。 红皮云杉的蒸腾系数为237.859,蒸腾生产率为4.270。净光合速率与蒸腾速率存在着密切的线性关系。 对蒸腾强度与环境因子变化的关系进行了单因子和多因子分析,影响蒸腾强度的主要因子依次是光照、空气温度、湿度和风速,根据这四个主要因子建立了予测红皮云杉蒸腾强度的数学模型,并且予测了生长季内红皮云杉的蒸腾量。
In this paper, the pruning weighing method was used to study the transpiration intensity of 23-year-old spruce. The diurnal course of transpiration intensity of spruce (Picea koraiensis) showed a single peak in spring and autumn, a bimodal pattern in summer and a slight transpiration in the night during the spring, and the monthly process in the growing season was peaked in July. The transpiration coefficient of spruce was 237.859 and the transpiration productivity was 4.270. There is a close linear relationship between net photosynthetic rate and transpiration rate. The relationship between transpiration intensity and environmental factors was analyzed by single factor and multi-factor analysis. The main factors influencing transpiration intensity were light, air temperature, humidity and wind speed. According to these four main factors, Strength of the mathematical model, and to predict the growth season spruce Picea transpiration.