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上海浦东新区城市森林树冠覆盖分析
王近秋,吴泽民,吴文友
0
(安徽农业大学林学与园林学院,合肥230036)
摘要:
应用ArcGIS判读2007年遥感影像, 分析了上海浦东新区(原)的树冠覆盖。研究区总面积为533 km2,建成区为252 km2。结果表明,研究区现有树冠覆盖率7.02%,建成区树冠覆盖率10.27%;其中研究区的潜在树冠覆盖(技术层面)可达8.68%~9.79%, 建成区潜在树冠覆盖率可达到11.49%~12.3%。自商业中心向东树冠覆盖表现城郊梯度的变化,在建成区内自中心城区到城郊边树冠覆盖呈递增趋势,并在外环林带区域达到最高值,之后在城市外侧明显递减。不同功能区的树冠覆盖同样呈现明显差别,外环林带最高,随后是公园、道路、居住区,商业区则最低。根据树冠覆盖估算,浦东新区约有乔木368 万株,其中建成区有255 万株。建成区至少可增植乔木30 万株。
关键词:  树冠覆盖  城郊变化  城市森林  上海浦东
DOI:CNKI:34-1162/S.20110829.1433.030
投稿时间:2011-04-01
基金项目:国家“十二五”科技支撑计划(2011BAD38B03)资助。
Analysis of urban tree canopy cover in Pudong New District of Shanghai
WANG Jin-qiu,WU Ze-min,WU Wen-you
(School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036)
Abstract:
The 2007 Spot image of Pudong New District of Shanghai was analyzed to estimate the tree canopy cover (TCC) based on land use categories by using ArcGIS. A transect from commercial center to suburb (from west to east) was made to compare gradient variation of tree canopy cover as well. The studied area covers 533 km2 in total, of which, built up area occupies 252 km2. The results showed that the tree canopy cover was 7.02% in the area, and 10.27% in the built up area. The potential tree canopy cover (technical) could reach to 8.68%-9.79% in the total area, and 11.49%-12.3% in the built up area; TCC gradient based on transect analysis showed that the TCC increased gradually from west to east in the built up area, and reached to its highest at the ring forest then reduced significantly. TCC were obviously significant for different land uses, which was highest for the ring forest use, then for park, road,in turn, and it was lowest for resident and commercial use . It is estimated that there are 3.68 million trees in Pudong New District, and 2.55 million trees in the built up area. At least 0.3 million trees can be added in the built up area.
Key words:  tree canopy cover  change of urban and suburb  urban forest  Pudong of Shanghai

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