顾及耦合作用的森林景观多尺度分类  

Multi-Scale Forest Landscape Classification Considering Coupling Effect

作　　者：赵春燕[1] 李际平[1] 马文俊[2] 袁晓红[1] 郑柳[1] 

机构地区：[1]中南林业科技大学,长沙410004 [2]四川省林业勘察设计研究院,成都610081

出　　处：《林业科学》2013年第11期183-188,共6页Scientia Silvae Sinicae

基　　金：国家自然科学基金项目(30972362);中南林业科技大学青年基金项目(QJ2011045B);中南林业科技大学人才引进项目

摘　　要：森林景观是以森林生态系统为主体而构成的景观，其分类是确定景观构成要素及空间分布格局（陆元昌等，2005）。但景观异质性依时间和空间尺度变化而存在差异，在大尺度下空间变异中的“噪声”成分在另一种较小尺度下表现为“结构性”成分，一个景观单元在小尺度上呈现异质性（邬建国，2000），而在大尺度上可能具有均质性（赵玉涛等，2002）。不同尺度景观要素具有不同程度均质性（Goberna et al．，2007）。森林景观分类是一个基于土地利用类型、植被和环境条件等因素而将其划分为多级分类体系的科学过程（朱耀军等，2011）。因此，森林景观分类具有尺度特性，不同尺度下森林景观分类的构成要素及构成要素等级不同。Based on the data of forest resource inventory in the west Dongting Lake region, a classification method, suitable for vectorized data, was proposed and developed for multi-scale landscape components. The dominant tree species, age and crown closure, altitude, slope, slope aspect and slope position were selected as the influencing factors for the classification. The small-scale forest landscape classification mainly considers the grading of vegetation factors and environmental factors, however the large-scale classification needs to take consideration of the coupling effects among the elements of forest landscape types. These concerns act as a rule to merge the small forest landscape patches into their adjacent units. In this study the attribute characteristics of space unit in the vector graphics was based to analyze its semantic proximity relation, and the spatial analysis function of ArcGIS was used to realize the merger of space unit. According to the edge effect and coupling strength between different forest landscape types, small patches was eliminated, and merged into patches of landscape types with high environmental coupling. Thu~, muhiscale landscape classification database was established, and multi-scale forest landscape classification were realized.

关 键 词：耦合作用 多尺度 森林景观 景观分类 森林资源二类调查数据 

分 类 号：S718.54[农业科学—林学]