金华北山南坡主要植被类型的群落特征

浙江省金华北山地处中亚热带北部, 在植被区划上属于中亚热带常绿阔叶林北部亚地带。该区植被是遭砍伐后恢复的次生林, 目前正处于快速的正向演替进程中, 这为研究常绿阔叶林植物群落动态演替机制及受损生态系统的恢复提供了平台。为进一步了解金华北山地区主要植被类型的群落特征, 该文以国际上通用的大样地调查方法, 采用固定样方对其南坡主要植物群落进行了调查, 其中森林样方面积30 m × 30 m, 灌丛样方面积为20 m × 10 m、30 m × 10 m。调查群落物种组成及其数量特征, 记录群落生境信息, 计算木本植物重要值, 分析群落的类型及特征, 并制作每个样方主要木本植物的空间分布图。论文提供了24组详细的群落样方数据(包括21个森林样方和3个灌丛样方), 含有11个群系。

Community characteristics of main vegetation types on the southern slope of Beishan Mountain in Jinhua,Zhejiang, China

The Beishan Mountain of Jinhua is located in the northern part of the mid-subtropical region. In vegetation division, this region belongs to the northern sub-zone of mid-subtropical evergreen broad-leaved forest vegetation belt. The vegetation in this mountain is a secondary forest restored from a severe deforestation. It is currently in a rapid process of positive succession. Thus, this region is suitable for studying the dynamics and succession mechanisms of plant communities and the restoration of degraded ecosystems. To further understand the community characteristics of the main vegetation types in Beishan Mountain, we surveyed the main plant communities on its southern slope with a fixed plot method (the plot area is 30 m × 30 m for forests and 20 m × 10 m, 30 m × 10 m for shrubs) based on the internationally accepted forest survey approach used in the survey of dynamic forest plots. The species composition, quantitative characteristics and habitat information of all plant communities were investigated and recorded. The importance values of trees and shrubs were calculated. The community types and their characteristics were analyzed. The spatial distribution maps of the major trees and shrubs in each plot were also drawn. In the present study, detailed community data for 24 sampled plots representing 11 formations were presented (consisting of 21 forest plots and 3 shrub plots).