福建省古田翠屏湖森林景观格局研究

Study on forest landscape pattern around Cuiping Lake of Gutian in Fujian Province

利用福建省古田水库国有防护林场1996年二类资源调查资料和2001年补充调查资料基础数据,结合1∶1万地形图、林业基本图和林相图,运用景观生态学原理,借助地理信息系统技术,对古田翠屏湖的森林景观空间格局及其多样性进行分析。统计结果:9种斑块类型的斑块体平均周长1168.9 m、平均面积5.09 hm2、平均斑块体形状指数1.528、平均景观破碎度0.207、平均斑块体的分维数1.052、景观多样性指数1.734 5、景观优势度1.4354、均匀度指数0.5472、人工干扰指数11.15、平均分离度0.6446。分析表明:古田翠屏湖森林景观类型破碎度较高,优势度较高,人工干扰指数很高,多样性指数较低。分析结果能比较真实地反映古田翠屏湖森林景观组成结构的基本特征及景观空间格局,对指导生产具有一定的理论意义。

The data from the class Ⅱ resource survey materials in 1996 and the supplemented investigation in 2001 about the statertm guarding forest farm for Gutian Reservoir in Fujian were utilized. According to 1 ： 10 000 topographic maps, basic forestry pictures and forest constitutional diagram, based on the landscape ecology principles and the technology of geographical information system, the landscape spatial pattern and diversity of the forest around Cuiping Lake of Gutian were analyzed. The statistics showed that average total edge 1 168.87 m of 9 kinds of patterns, average area 5.09 hm^2, mean shape index 1.528, the average landscape fragmentation 0.207, mean patch fractal dimension 1.052, the landscape diversity index 1.734 5, the landscape dominance index 1.435 4, the evenness index 0. 547 2, the artificial interfere index 11.15, the average landscape isolation 0. 644 6. Analysis indicated that the forest landscape fragmentation and the landscape dominance index were relatively high, the artificial interfere index was very high, but the diversity index was relatively low. The result has proved the essential features and landscape spatial pattern of the structure of the forest landscape around Cuiping Lake of Gutian, and has also proved to be significant for the theoretical instruction of production.