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在林业生产中,迫切需要一种反映立地质量和各立地条件上林木生长状况的图面材料。现在常见的森林资源图<包括林相图、植被图>虽能直观反映林业资源的数量和分布状况,但不能反映立地条件的优劣。在林业区划
In forestry production, there is an urgent need for a kind of surface material that reflects the site quality and the growth of trees in each site. The common forest resource map (including forest phase diagram and vegetation map) can directly reflect the quantity and distribution of forestry resources, but can not reflect the advantages and disadvantages of site conditions. In the forestry division