省级尺度森林生态系统多样性动态分析方法研究——以湖南为例  

Dynamic Analysis on Provincial-scale Forest Ecosystem Diversity ——A Case Study in Hunan Province

作　　者：李明阳[1] 余超[1] 时宇[1] 杨玉峰[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037

出　　处：《林业资源管理》2013年第6期102-107,共6页Forest Resources Management

基　　金：国家自然科学基金课题(31170592)

摘　　要：通过空间热点探测、生态系统类型变化分析、趋势面分析、地理加权回归分析,对湖南省2005—2009年间的森林生态系统多样性进行分析。结果表明:1)研究区森林生态系统多样性减少较多的县(冷点)主要分布在湖南省西北部,而增加较多的县(热点)主要分布在研究区域的东部;2)2005—2009年,研究区域减少的生态系统类型为落叶阔叶林、灌丛、草地、裸地,而增加的生态系统类型为针阔混交林、疏林地;3)森林生态系统类型减少数量的空间分布呈现出从北向南倾斜的带状分布格局,而类型增加数量的空间分布则呈现出由西向东倾斜的带状分布格局,4)森林生态系统类型变化的大小与平均海拔、贫困人口比例负相关,与人口密度正相关。Spatial hotspot detection,dynamic analysis of forest ecosystem types,trend surface analysis and geographical weighted regression analysis were applied to analyze the change of forest ecosystem diversity from 2005 to 2009 in Hunan Province. Study results show that: 1) the counties with a large number of disappeared forest ecosystem types( cold spots) were mainly distributed in the northwest of the study area, while the counties with a large number of emerging ecosystem types( hotspots) were concentrated in the eastern part of the province; 2) the disappeared forest ecosystem types in Hunan Province from 2005 to 2009 were deciduous broadleaved forest,shrub,grassland,bare land,while the emerging types were mixed broadleaved and needle-leaved forest and mosaic grassland and forest; 3) the spatial pattern of the number of disappeared forest ecosystem types showed a sloping trend from north to south,while the pattern for emerging types showed a sloping trend from west to east; 4) the change number of ecosystem types was negatively correlated with the average altitude and poverty rate,positively correlated with population density.

关 键 词：森林生态系统多样性 动态分析 湖南省 

分 类 号：S718.55[农业科学—林学]