摘要
以宣城市最新的森林资源二类调查数据为依据,通过指标筛选、权重分配、归一化处理、等级划分,将全市森林自然度划分为5个等级。结果表明:宣城市森林自然度综合指数为0.69,森林生态系统功能较完整,森林群落类型演替序列程度较高;森林自然度各等级面积呈先增加后降低的趋势,林地中乔木林和竹林各等级变化趋势一致,且竹林的等级聚集更加集中;研究结果对宣城市的森林经营管理具有指导作用。
Based on the latest data of forest resources survey in Xuancheng city,forest naturalness was divided into five grades through index screening,weight distribution,normalization processing and grade division.Results showed that forest naturalness comprehensive index of Xuancheng city was 0.69;forest ecosystem function was relatively complete;and forest community type succession sequence was higher.The areas of forest naturalness levels increased firstly and then decreased.The grading trends of arbor forest and bamboo forest were consistent,and the level of bamboo forest was more concentrated.The research results had a guiding role for forest management in Xuancheng city in the future.
作者
张济
Zhang Ji(China Forest International Engineering Consulting Co.,Ltd.,Beijing 100013,China)
出处
《广西林业科学》
2019年第3期416-420,共5页
Guangxi Forestry Science
