黄岩长潭水库流域主要植被类型及恢复对策

研究了黄岩长潭水库流域主要植被类型的结构、组成和分布.结果表明:该区域森林植被类型主要有针叶林、针阔叶混交林、常绿阔叶林、常绿落叶阔叶混交林、毛竹林、灌草丛和经济林,均为人工植被和次生植被,以暖性针叶林和针阔叶混交林为主体.植被种类组成和空间结构简单,枯枝落叶层较薄,对水土保持的作用较小.常绿阔叶林是长潭水库流域植被恢复的目标.建议用生态恢复的办法,用林分改造进行植被的恢复,引种地带性植被中的优势种、关键种,提高演替速率.

Vegetation types and restoration strategy of Changtan reservoir drainage area in Huangyan, Zhejiang Province

The floristic,structure and distribution of main vegetation types in Changtan reservoir drainage area in Huangyan,Zhejiang Province were investigated.The results showed that: the main vegetation types of Changtan reservoir drainage area were coniferous forest,coniferous and broad-leaved mixed forest,evergreen broad-leaved forest,evergreen and deciduous broad-leaved mixed forest,bamboo forest,shrub community,and economic plantation.All of them were artificial or secondary vegetation,and that coniferous forest and coniferous and broad-leaved mixed forest formed the principal part.The vegetation have low species diversity and single space configuration,thinner litter layer,thus were not significant in preserving water and soil.Evergreen broad-leaved forest was the aim of vegetation restoration of Changtan reservoir drainage area.The ecological recovery strategy was suggested in order to promote its succession rate.