文献类型：期刊文献

中文题名：北京的北部城市森林树冠覆盖特征

英文题名：Urban Tree Canopy Characteristics in the Northern Beijing

作者：姚佳[1] 贾宝全[1] 王成[1] 张昶[1] 杜万光[1] 蒙宽宏[2]

第一作者：姚佳

机构：[1]中国林业科学研究院林业研究所;[2]黑龙江省林业科学研究院林业研究所

年份：2015

卷号：43

期号：10

起止页码：46-50

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：国家林业公益性行业科研专项(2014040301);北京市自然科学基金项目(8152031)

语种：中文

中文关键词：树冠覆盖特征;城市森林;潜在树冠覆盖;北京

外文关键词：Urban tree canopy; Urban forest; Potential tree canopy cover; Beijing

分类号：S718.542

摘要：应用RS和GIS技术,参考国外城市林木树冠覆盖分类系统,通过解译2013年8月worldview卫星影像,提取北京的北部林木树冠覆盖斑块,分析北部＂城-郊＂带森林景观格局特征。结果表明：1研究区树冠覆盖率为23.47%,其中4~5环路内因为存在奥林匹克森林公园,林木树冠覆盖率最高（28.57%）;远郊区（5~6环）因绿地斑块质量差,导致林木树冠覆盖率最低（21.47%）。道路绿地在9种用地类型中树冠覆盖面积最大,对整体树冠覆盖贡献也最大。2树冠覆盖斑块具有特大斑块面积的数量少、小斑块面积数量大的特点。小斑块、中斑块、大斑块和特大型斑块,分别占斑块总量的23.07%、23.93%、9.7%和43.3%。3特大斑块主要位于4环路以北的城郊地区,2环路内老城区以小斑块数量占优势,这一方面反映城市中心区建设用地紧张的现状,另一方面说明近年开展的＂北京平原区百万亩造林工程＂颇有成效。4研究区潜在树冠覆盖14.11%,其中远郊区潜在树冠覆盖斑块数量最多、面积最大,说明城市郊区是未来城市森林建设的重点区域。
The experiment was conducted to analyze the tree canopy coverage landscape characteristics of the northern urban-suburb region in Beijing by GIS technology,with the images from 2013 August worldview satellite and foreign classification system. The ratio of tree canopy coverage was 23. 47%,with the highest 28. 75% between 4 th and 5 th road,and the lowest between 5 th and 6 th road. Road green lands were dominant among nine types with the largest contribution to overall.Research region had characteristics that extra large-sized patches had the least patch numbers and the largest area,but small-sized patches had the most numbers and the smallest area. The coverage ratio of extra large patches,with each area larger than 1 hm2,was 43. 28%,and the ratios of small-sized,medium-sized and large-sized were 23. 07%,23. 93% and9. 7%,respectively. Extra large-sized patches were mostly distributed in northern suburb region,and the number of the planted small-sized patches was the most in the old city area. Therefore,urban land was relatively scarce,and afforestation construction was quite effective. The potential tree canopy cover rate reached to 14. 11%,with the suburb region being the most at potential tree canopy cover area and the important region for the urban forest in the future.