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鼎湖山季风常绿阔叶林小气候特征分析

ENVIRONMENT OF MICROCLIMATE OF MONSOON EVERGREEN BROAD-LEAVES FOREST IN DINGHUSHAN

  • 摘要: 阐述了鼎湖山季风常绿阔叶林小气候特征与空旷地的差异,并分析了这些差异产生的原因。结果表明:季风常绿阔叶林冠层顶部的太阳总辐射量年平均为3488.8MJ·m-2,由辐射强度和辐射总量计算出的反射率分别为10.5%、11.4%,年平均气温为19.9℃,此3项都比空旷地低,而年平均相对湿度高于空旷地,其值为87%;季风常绿阔叶林年蒸散力为987.50mm,湿润指数为0.96;季风常绿阔叶林土壤表层温度日变化不及空旷地显著;无论是季风常绿阔叶林,还是空旷地,土壤温度在春、夏季节自上而下逐步降低,在秋、冬季节自上而下逐步升高。

     

    Abstract: The differences of microclimate between monsoon evergreen broad leaves forest and bare land was analyzed in this paper.The results are as follows:The annual average reflectivity is 10.5% and air temperature is 19.9℃ for monsoon evergreen broad leaves forest,and they are lower than the bare land's.The annual average relative humidity is 87% and higher than bare land's.The annual average potential evapotranspiration is 987.50 mm and moisture index is 0.96.The diurnal changes of surface soil temperature are not obvious, but bare land's is.From above to below,the soil temperature cuts down by and by in spring and summer and goes up by and by in autumn and winter in both monsoon evergreen broad leaves forest and bare land.

     

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