中国植物空间分异规律  

Spatial disparities of Chinese vegetation

作　　者：胡雄光[1] 薛华伟 王兴勇[3] 付意成[3] 

机构地区：[1]丽水学院,浙江丽水323000 [2]中国水电建设集团圣达水电有限公司,四川乐山614013 [3]中国水利水电科学研究院,北京100038

出　　处：《南水北调与水利科技》2015年第6期1089-1092,1142,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：中国博士后科学基金项目(2014M550770);国家自然科学基金项目(5140090767)

摘　　要：以省级行政区为分析单元,借助ArcGIS空间分析功能对中国行政分区图、中国森林覆盖率图、中国植物区系图、中国植被分区图进行叠加分析。通过对同一植被分区下分析单元数据进行整合,给出全国不同植物区系、植被分区、森林覆盖率信息。采用二阶聚类综合判别法,提取中国植被分区总体信息,探求植被空间分异规律,发现一类、二类、三类植被的比例为30∶37∶23,反映出植被的区域分布特性较强;四类植被比例大致占10%,反映出大区域内部的局地小生境造成的植被分布的整体差异。另外,一类植被多分布在中高纬度地带,二类植被贯穿中国全纬度,三类植被多分布在低纬度地带。In this paper,the Chinese administrative division is regarded as the analysis unit,the vector data of Chinese administrative district map,Chinese forest coverage map,Chinese flora map,and Chinese vegetation zoning map are overlaid using the spatial analysis function of ArcGIS.The information of vegetation zoning and flora,as well as forest coverage is obtained through the analysis of unit data.On the basis of Chinese vegetation zoning information using the second-order cluster analysis method,the spatial disparities characteristics of vegetation are analyzed.The proportion of the first class,second class,and third class vegetation is 30∶37∶23,which reflects a strong spatial variation of vegetation distribution.The proportion of fourth class vegetation is about 10%,which reflects the regional variation from the overall vegetation distribution.The first class vegetation mostly exists in the region of high latitudes,the second class is everywhere,and the third class is located in the region of low latitudes.

关 键 词：森林覆盖率 植被特征 植物区系 空间分异 

分 类 号：X144[环境科学与工程—环境科学] Q948[生物学—植物学]