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基于GIS的闽江上游城区森林景观格局分析 被引量:9

Gis-based Landscapes Patterns of Forests in the Upstream District of Minjiang River
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摘要 以2012年福建省闽江上游城区—三明市三元区的森林资源二类调查数据为基本资料,基于GIS平台和Fragstrats软件,从研究区域的土地利用类型、有林地森林类型和优势树种等3个尺度,对研究区内森林景观格局进行研究.结果表明,在土地利用类型景观中,斑块面积由大到小依次为有林地、非林地、未成林地、无立木林地、灌木林地、宜林地和疏林地;斑块边界密度和边界形状较为复杂,分布较为分散.在有林地中,从森林类型构成比例来看,以针叶纯林和竹类纯林为主,阔叶纯林和混交林比例较低.从优势树种构成来看,以杉类、松类和竹林类树种为主,且分布广泛,占绝对优势.研究区域森林景观斑块的空间结构复杂,斑块连接指数小,破碎化程度高. Based on the softwares of GIS and Fragstats, the paper analyzed the patterns and heterogeneities of forest landscape in the upstream district of Minjian River in Fujian Province. Combined with the GIS-based forest inventory data and the field survey, three dimensions of forest landscapes patterns indexes, land use type scale, woodland scale and dominant species scale were calculated in this paper. The results showed : 1 ) in descending order, the patch areas were ranged as follow : woodland, non-forestry land, afforest land, non-standing woodland, shrub land, suitable forest land and open forest land. All patches were with complicated edge densities and boundary shapes but scattered distribution. 2) The ratio of components to needle leaf and bamboo of pure forest land were more larger than that of broad leaf of pure forest land or the mixed forest land. In the species components, the China firs, the Conifer and the bamboo are the prominent species in the study area, their distribution were wide. From the analyses of landscape scale,it showed that the forest community had a complex space structure, a high degree fragmentation and a low level of connection between the same kinds of patches in the research region.
出处 《吉林师范大学学报(自然科学版)》 2014年第1期130-135,共6页 Journal of Jilin Normal University:Natural Science Edition
基金 国家自然科学基金资助项目(41201100) 福建省自然科学基金项目(2012J01071)
关键词 森林景观 斑块连接指数 三元区 闽江上游 forest landscape patch connectance index sanyuan district the upstream of Minjian river
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