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首页> 外文期刊>Environment and Ecology Research >The Effect of Forest Trees Group Cutting on Accumulation, Density and Temperature of Snow (Case Study: Kheiroud Forest Research Station) in Iran
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The Effect of Forest Trees Group Cutting on Accumulation, Density and Temperature of Snow (Case Study: Kheiroud Forest Research Station) in Iran

机译：伊朗林木砍伐对积雪，雪的密度和温度的影响（案例研究：Kheiroud森林研究站）

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摘要

The tree cutting in the forests can affect different environmental aspects such as snow accumulation, density and temperature. This phenomenon was investigated in the Caspian Hyrcanian mixed forests (Namkhaneh seris, Kheiroud, Mazandaran province, Iran) from year 2001 up to 2005. A region with tree cutting was compared with region without any cutting (control). For measuring snow accumulation, 10 pickets in each region were installed and snow height was measured every 5 days. For determining the density, sampling was done with 500 cm~(3) sampler from different snow depths every 5 days. Finally, snow temperature was measured at different depths with thermometer. The results indicate that the average of snow density in cutting region and control region are 0.178 gr/cm~(3) and 0.151gr/cm~(3), respectively and there is not any significant difference between them. Also decreasing in canopy due to tree cutting has a significant relation with snow accumulation and its depth. Also, the average snow height in control region was 13.88 cm and after cutting increased to 21.15 cm. Snow temperature increasing is significantly related to the decreasing in canopy. Therefore, the average snow temperature in control region is -3.3℃ which decreases to -10.3℃ by cutting the trees.
机译：森林中的砍伐树木会影响不同的环境方面，例如积雪，密度和温度。从2001年到2005年，在里海热带混合森林（Namkhaneh seris，Kheiroud，伊朗Mazandaran省）中对这种现象进行了调查。比较了砍伐树木的地区和未砍伐树木的地区（对照）。为了测量积雪，在每个区域安装了10个尖桩，每5天测量一次积雪高度。为了确定密度，每500天用500 cm〜（3）采样器从不同的雪深进行采样。最后，用温度计在不同深度测量雪温。结果表明，采伐区和控制区的平均雪密度分别为0.178gr / cm〜（3）和0.151gr / cm〜（3），两者之间无显着性差异。此外，由于砍伐树木造成的冠层减少也与积雪及其深度密切相关。另外，控制区域的平均雪高为13.88 cm，切割后增加到21.15 cm。雪温的升高与冠层的减少显着相关。因此，控制区域的平均降雪温度为-3.3℃，通过砍伐树木降到-10.3℃。

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