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本文根据气候(主要为水热条件)、地貌、地质、土壤及植被等立地因素对杉木生长影响的研究,提出了杉木产区区划及立地分类系统。以水热条件和区地貌为依据,对杉木产区作出带、区(亚区)二级区划;在区(亚区)之下,以大地貌(岩性)、局部地形及土壤因素为依据,分别划分立地类型区(亚区),立地类型组及立地类型。同时还编制了杉木(实生)地位指数表和多因素数量化地位指数查定表,以评价立地生产力;对立地分类及立地评价在林场还作了应用研究。应用这个研究成果不仅可以避免目前有些地区不恰当地选择商品材基地和造林地,而且可以作为提出育林措施的依据,改善杉木林的栽培,提高杉木造林的生长、生态和经济效果。
In this paper, based on the study of the impact of climate (mainly hydrothermal conditions), geomorphology, geology, soil and vegetation on the growth of Chinese fir, the classification and site classification system of Chinese fir are proposed. Based on the hydrothermal conditions and the topography of the area, a secondary zoning of zoning and zoning (subregion) was made for the fir production area. Under the subregion (subregion), the topography (lithology), topography and soil factors were taken as the basis , Divided into site type area (sub-area), site type group and site type. At the same time, the fir (real) status index table and multi-factor quantitative status index lookup table were also compiled to evaluate the on-site productivity. The site classification and site evaluation were also applied in the forest farm. Applying this research result can not only prevent improper selection of commercial timber base and afforestation land in some areas at present, but also can be used as the basis for raising the afforestation measures to improve the cultivation of Chinese fir plantation and improve the growth, ecological and economic effects of Chinese fir plantation.