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当前位置: 首页 > 文章 > 不同抚育强度对兴安落叶松幼苗光合作用的影响 东北林业大学学报 2015,43 (10) 51-54+67
Position: Home > Articles > Effect of Different Intensity Tending on Photosynthesis of Larix gmelini Seedling Journal of Northeast Forestry University 2015,43 (10) 51-54+67

不同抚育强度对兴安落叶松幼苗光合作用的影响

作  者：
朱玉杰;董希斌;李祥
单  位：
森林持续经营与环境微生物工程黑龙江省重点实验室(东北林业大学)
关键词：
人工抚育;天然用材林;兴安落叶松;光合特性
摘  要：
对大兴安岭的兴安落叶松(Larix gmelinii)天然用材林进行不同强度的人工抚育间伐后,测试分析了林下落叶松幼苗的光合特性。结果表明:抚育间伐后,采伐样地内兴安落叶松幼苗的受光条件明显得到改善,净光合速率、蒸腾速率、气孔导度、环境CO2摩尔分数、胞间CO2摩尔分数、叶片表面光合有效辐射、叶片温度等光合参数,均高于对照样地;净光合速率的日变化呈"单峰"曲线,与光合有效辐射的关系符合一元二次方程,随温度升高先增加后减小;在采伐强度为20.86%~40.01%的样地内,落叶松幼苗光合参数表现最优,对温度的适应能力最强。
译  名：
Effect of Different Intensity Tending on Photosynthesis of Larix gmelini Seedling
作  者：
Zhu Yujie;Dong Xibin;Li Xiang;Key Laboratory of Forest Sustainable Management and Environmental Microorganism Engineering of Heilongjiang Province,Northeast Forestry University;
关键词：
Artificial tending;;Natural timber forest;;Larix gmelini seedlings;;Photosynthetic characteristics
摘  要：
We studied the photosynthetic characteristics of Larix gmelini seedlings after different intensity tending in the natural L. gmelini timber forest in Daxing'an Mountains. After tending felling,the light condition for seedlings was improved obviously in each cutting samples,and the photosynthetic indexes including net photosynthetic rate,transpiration rate,stomatal conductance,the concentration of environmental CO2,the concentration of intercellular CO2,the light intensity of leaf surface,and leaf temperature were higher than those in the control sample. The diurnal variation of net photosynthesis rate presented a one peak curve,and the relationship between light intensity and net photosynthetic rate presented quadratic equation with one unknown,and with the increase of the heat,the net photosynthetic rate was increased first and then decreased. In the sample with tending intensity of 20. 86%- 40. 01%,Larix gmelini seedling had the best photosynthetic indexes with the strongest adaptability to temperature.

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