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本文根据乱流扩散法原理,利用实验集水区连续6年实测数据,对杉木人工林蒸散规律进行了探讨。结果表明:杉木人工林年平均蒸散量875.45mm,占年降雨量的82.2％。其中,林冠蒸散量781.77mm,林地93.68mm,分别为总蒸散量的89.3％和10.7％。与水量平衡法的结果比较,为水量平衡法的101.2％。在研究蒸散规律的同时,对乱流扩散法的应用及参数的估算也进行了较详细的分析。
According to the principle of turbulent flow diffusion, the essay explores the law of evapotranspiration of Cunninghamia lanceolata plantation using the experimental data of 6 consecutive years. The results showed that the annual average evapotranspiration of Chinese fir plantation was 875.45 mm, accounting for 82.2% of the annual rainfall. Among them, the forest canopy evapotranspiration 781.77mm, forest land 93.68mm, respectively, the total evapotranspiration of 89.3% and 10.7%. Compared with the results of the water balance method, it is 101.2% of the water balance method. While studying the law of evapotranspiration, the application of turbulent diffusion method and the estimation of parameters are also analyzed in more detail.