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适地适树是取得造林成效和合理经营森林的先决条件。所以,在林业调查设计中非常重视森林生长的环境,这就是林业上常常讲的森林立地条件。立地,顾名思义是森林的立足之地。立地条件是指影响森林生长发育的一切环境因素,具体说就是地形、地质、土壤、气候、水文和生物等。立地条件不同,组成森林的树木种类、林分结构、森林生产率等都有差异。
Appropriate tree planting is a prerequisite for achieving afforestation effectiveness and rational management of forests. Therefore, in the survey of forestry design attaches great importance to the environment for forest growth, which is often referred to in forestry forest site conditions. Site, as the name suggests is the foothold of the forest. Site conditions refer to all the environmental factors that affect forest growth and development, specifically terrain, geology, soil, climate, hydrology and biology. Site conditions vary, the composition of the forest types of trees, stand structure, forest productivity and so there are differences.