文献类型：期刊文献

中文题名：延庆县森林资源时空动态分析与评价

英文题名：Spatio-temporal Dynamic Analysis and Evaluation of Forest Resources in Yanqing County

作者：张会儒[1] 何鹏[1] 李春明[1]

第一作者：张会儒

机构：[1]中国林业科学研究院资源信息研究所

年份：2010

卷号：26

期号：6

起止页码：4-8

中文期刊名：森林工程

外文期刊名：Forest Engineering

收录：CSTPCD

基金：国家"十一五"科技支撑计划专题(2006BAD23B0202)

语种：中文

中文关键词：森林资源;二类调查数据;动态变化;时空分析

外文关键词：forest resources; secondary inventory data; dynamic changes; analysis in time and space

分类号：F32

摘要：以北京市延庆县为研究对象,以1999年和2004年森林资源调查数据为基础,以地理信息系统为技术支持,分析和评价了5年间该场森林资源的数量、种类及其结构在时间和空间上的动态变化。结果表明:研究区域林地面积比例由71.39%上升至75.38%,增长了4%,在林地内部,有林地面积增长较明显,增加了约14%。总蓄积量增长了43.6万m3,达158.24万m3,增长了38.1%。延庆县全境以栎类林为代表的次生的天然林占主体地位,蓄积也占绝对优势。受人工造林的影响,导致整体平均胸径和平均高减少,也使得侧柏、落叶松、油松等树种分布扩大。全县林分五个林龄组的面积构成呈倒J型分布。
A research was conducted to analyze and evaluate the dynamic changes of forest resources from aspects of quantity,types and structure both in time and space in Yanqing county of Beijing based on GIS and the forest inventory data of 1999 and 2004.Results showed that the proportion of forest land research area increased to 75.38% from 71.39%,about 4%,and the area of wood land that belonged to forest land also increased by 14%.The total volume went to 158.24×10^4 m^3 with the increase of 43.6×10^4 m^3.The secondary natural forest represented by oak in the whole county achieved dominance both in area and volume.Due to reforestation,the average height and DBH of the forest reduced,and the distribution of Platycladus orientalis,Larch and Pinus tabulaeformis extended.The structure of five stand age groups area in the county presented the distribution of inverted J-type.