基于GIS建模技术的县级林业区划方法研究

提出了基于GIS的县级林业区划方法框架;建立了永安市林业区划因素体系,并运用空间分析方法对各因子进行了提取;探讨了基于GIS建模技术的县级林业区划方法.通过主成分分析、建立综合模型、判别分析、确定合理分区个数和清除细小多边形等过程,最终得到的区划结果能够将各相对优势区域合理分开,分区林业生产状况统计数据能较清晰地反映各分区的资源状况和相对优势,林业建设发展方向较为明确.

Study on Forestry Division Method at County Level Based on GIS with Integrated Modeling

Forestry division has been discussed rarely since 1995 in China. The growing interest in forestry p rovidesan opportunity to imp rove the research tools and app roaches that can help achieve a broad understanding of forestrydivision. Based on the research in Yongpan, Fujian Province of China, a framework thatmay be useful in correlativeforestry division studywas put forward: (1) The factor-system of Yongpan forestry division was established; (2) Thefactorswere extracted with the spatial analysis; (3) The forestry division method of integrated modeling at countylevel based on GIS was p rocessed. The method was taken through Principal Components Analysis, building theintegrated model, Discriminate Analysis, seeking the ideal number of divisions and eliminating the scrappypolygons. The outcome showed that the method based on GIS with integrated modeling can reflect the p resentsituation of the forestry development. The relative dominant subdivisions were distinguished reasonably, and aspecific direction in forestry developmentwas given. According to the statistics of the subdivisionspstate, the relativedominant subdivisions were showed obviously.