林木的自然分布和生长发育受土壤、气候、地质、地貌等环境条件的制约和影响。而其中的气候条件是一个非常重要的因素。由于各地气候条件的差异以及各树种对气候条件的基本要求不同,使得林木的生长情况也不相同,且有时相差较大。因此,评价某地区的气候条件是否适宜某树种的生长以及 The natural distribution and growth of trees are controlled and influenced by the environmental conditions such as soil, climate, geology and landform. The climatic conditions are a very important factor. Due to the differences of climatic conditions and the different basic requirements of climatic conditions, the growth of trees is not the same, and sometimes the difference is quite large. Therefore, the assessment of the climatic conditions of a region is suitable for the growth of a species as well