福州地区土地景观格局动态变化及多样性分析

利用1985年与2000年数据计算了福州地区景观格局变化的若干指标。结果表明，整体上福州地区土地景观多样性指数、破碎度指数有所上升，优势度指数下降，景观格局趋于稳定，系统趋于优化。同时，借助ArcGIS8．3软件平台对福州地区2000年土地利用数据进行处理，计算景观多样性指数，然后进行聚类分析，在区域内部划分出多样性程度不同的3类子区：闽侯县景观多样性程度最高，长乐、福清、福州、罗源、闽清、永泰次之，连江、平潭景观多样性程度最低。

AN ANALYSIS OF THE DYNAMIC CHANGE OF THE LANDSCAPE PATTERN AND DIVERSITY IN FUZHOU

Supported by geographic information system, the land-use data of 1985 and 2000 is processed. The basic data of area and the quality of patches are got. Then the landscape indices in excel software are calculated. The result shows that the values of diversity and fragmentation increased and the value of dominance decreased. There were closed relations between the change of the indices and the increase of population and economic development. The proportion distance of each landscape type was diminishing. The structure of the ecosystem became more complicated. The landscape pattern was tending to stability and the system was coming better. But, there were differences in the interior. Fuzzy cluster analysis of interior difference is made in the DPS software with the landscape diversity values of 2000.When the value level is 0.9, the result comes to three types. The landscape diversity value of Minhou county is the highest, those of Fuqing, Fuzhou, Luoyuan, Minqing and Yongtai are medium, and those of Lianjiang and Pingtan the lowest.