摘要
根据2006年上海市奉贤区航空彩红外遥感影像数据,利用GIS技术和景观格局分析软件Fragstats 3.3,分别从斑块组成、类型水平与景观水平分析了奉贤区城市森林的空间景观格局。结果表明:研究区域内城市森林斑块53 286个,面积10 135.6 hm2;按斑块数目来分以小型斑块为主,占总数的64.0%,按面积分以大型斑块为主,占总面积的57.6%。城市森林总体呈现绿地斑块分布不均衡,绿地结构不合理的现状。经济林所占面积最大,斑块聚集程度最高;绿地与林带的破碎化程度高,分布分散;整体景观多样性指数较适中,为7.25,斑块类型丰富;均匀度较高,达0.97;蔓延度指数为46.46,存在着由小斑块控制整个景观的现象。建议调整城市森林的空间布局与结构,提高大中型城市森林斑块,如绿地在城市森林中的比重。
Based on the aerial colour infrared image in 2006,by using GIS technique and spatial pattern analysis software Fragstats 3.3,the urban forest space landscape pattern of Fengxian District in Shanghai City at patch composition,class level,and landscape level were analyzed.The results showed that within the research area,there were 53 286 patches of urban forest,covering an area of 10 135.6 hm2.64.0% of the patches were small-sized and 57.6% of the total area was made up of large patches.The distribution of urban forest space was not uniform,and the current structure was not reasonable.Economic forest had the largest patch area and the highest assembly degree,while city green space and forest belt space were highly fragmented and distributed separately.The landscape Shannon＇s diversity index was at intermediate level（7.25）,patch types were rich and landscape Shannon＇s evenness index was high（0.97）,and contagion index was 46.46.There is a phenomenon that small-sized urban forest patches controlled the whole space pattern.It was suggested that in Fengxian District,the structure and distribution of urban forest space should be adjusted,and the proportion of medium-sized patches such as city green space should be increased.
出处
《安徽农业科学》
CAS
北大核心
2010年第18期9857-9860,9890,共5页
Journal of Anhui Agricultural Sciences
基金
上海市奉贤区"三区一基地"建设重点项目
关键词
城乡交错带
航空影像
景观格局
城市森林
上海市奉贤区
Rural-urban ecotone
Aerial image
Landscape pattern
Urban forest
Fengxian District of Shanghai City
