广东西江地区杉木人工林生物量与立地因子相关的研究

一、引言广东西江地区处于南亚热带季风气候低山丘陵区。调查区位于北纬22°35′—23°08′,东经111°49′—112°20′,属我国杉木分布的南缘。由于气温较高,干湿季节较明显,杉木生长水平一般,尖削度大,材积产量也低。为探讨本地区杉木生长与立地条件之间的关系,寻找适宜杉木生长的有利环境和提出速生丰产的营林措施,1979年以来,我们先后在广东的西江、象牙山、仙菊和良洞径四个国营林场做了这方面的调查分析。本文是在过去工作的基础上,进一步探讨南亚热带地区立地因子对杉木各器官生物量的作用强度差异,从而找出该地区杉木人工林的营林规律和产量预报方法。

A STUDY ON THE RELATIONSHIP BETWEEN THE SITE FACTORS AND THE BIOMASS OF THE ORGANS IN CUNNINGHAMIA LANCEOLATA PLANTATIONS OF XIJIANG RIVER DISTRICT IN GUANGDONG PROVINCE

In this paper, a comparison analysis was made based on the investigative data of 70 plots on the relationship between the site factors and the biomass of the organs in Cunninghamia lanceolata plantation of Xijiang river district, an estimative model was related to the biomass and the site factors was established; and the scope values of the fitter site conditions to cultivate plantation of Cunninghamia lanceolata for this district and the biomass of stemwood depending upon the relation with the biomass of the branches and roots were given. A theoretical basis for to select and make a plan for Cunninghamia lanceolata planting-site, and its management was provided for Xijiang river district.