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杉木数量化地位指数予测表和立地类型划分,是评定宜林地立地质量的重要途径。在杉木宜林地选择、森林经营和产量预测等方面均有重要作用。近年来,俞新妥教授等根据对立地因子与杉木生长相互关系的研究,提出用坡位、腐殖质和土壤干湿度划分立地条件类型,评定宜林地立地质量;候治溥等用多元回归方法,将立地因素和地位指数结合起来,提出用小地形和土壤因子评定立地质量、预测
It is an important way to assess the standing quality of the forestland in order to determine the site of the quantitative status index of Chinese fir and the site type. It plays an important role in forest selection, forest management and yield forecasting. In recent years, based on the research on the relationship between site factors and Chinese fir growth, Professor Yu Xintao put forward to divide the site conditions type with slope position, humus and soil moisture, assess the site quality of Yilin land; use multiple regression method, Based on the combination of site factors and status index, the authors propose to evaluate the site quality by using small topography and soil factors. The forecast