天然次生林的土地分类方法  

THE LAND CLASSIFICATION METHOD OF THE NATURAL SECONDARY FOREST

作　　者：马友平[1] 

机构地区：[1]湖北民族学院资源与环境科学系,湖北恩施445000

出　　处：《湖北民族学院学报（自然科学版）》2000年第2期30-33,共4页Journal of Hubei Minzu University(Natural Science Edition)

摘　　要：:以凉水林场地形图、林相图、航空像片、1989年的小班调查薄等资料为基础建立了以栅格数据为基础的数字化高程模型,产生了具有栅格数据结构的坡度、坡向数据文件,并和以林班号、小班号为标识符的属性数据文件一体化,然后应用二倍的公息服从于 χ2 分布进行因子筛选,以信息增量为相似系数作为天然次生林地分类的量化指标,进行地类的归属。Based on information of the topographic map,forestry map,aerial photograph and the survey book in 1989 in Liangshui Forest Farm,the Digitized Elevation Model on the basis of rastor data structure has been set up.Slope degree and slope direction file have come into being,and these are integrated with Wite the screen of dual Mutual information obeying χ 2-distribution,the similar index of information gain is regard as the quantification norm to classify the nutral secondary forest and to define the type of forest land.$$$$

关 键 词：天然次生林 栅格数据结构 森林 土地分类 

分 类 号：S714.4[农业科学—林学]