遂宁地区香椿人工林数量化立地指数的编制及应用

通过对遂宁地区香椿(Toona sinensis Roem)人工林标准地的调查,分析各标准地优势木平均树高与立地条件(土壤质地、地下水位、排水状况、夹层、p H值、土壤母质、紧实度等因子)之间的关系,最终编制出以土壤质地、地下水位、排水状况、夹层4因子为主的数量化立地指数表,对遂宁浅丘农区相似区域香椿造林经营具有一定的指导意义。

Formulation and Application of Site Indexes of Toona sinensis Plantations in Suining Region

In this paper, an investigation was made on the Toona sinensis plantation in Suining region, and analysis was made of the relationship between average height of dominant trees and site conditions （ soil texture, underground water level, drainage, interbed ded stratum, pH value soil parent materials, compaction, etc） in different sample plots. Finally a quantitative site index table was drawn up, including the four factors of the soil texture, ground water level, drainage condition and double-layered stratum. This table would be a good guidance for afforestation and forest management of Toona sinensis in this area.