中文摘要：

基于GIS和RS技术，对2000年和2005年闽清县两期遥感影像解译，综合运用景观生态学和地统计学方法，对闽清县景观空间格局变化特征和人类干扰强度关系进行定量研究。结果表明：@2005年比较2000年，闽清县的景观破碎化程度明显减少，旱地、水田、林地、草地、水域和未利用地的斑块密度显著减少，而建设用地斑块密度增加，景观组分平均斑块面积均在增加；景观类型越来越有少数斑块类型控制，区域连通程度适中；②人类干扰分布强度及变化趋势与城镇扩展方向和强度基本一致；随着城市化进程的加快，干扰强度呈持续增强，干扰强度最大的区域也是生态系统最脆弱和生态保护的重点地区。在此基础上，以景观流原理作为出发点，采用累计耗费距离模型，研究了闽清县景观功能空间差异，进而探讨了构建生态源地、生态廊道等方法加强空间组分联系，以便对研究区的景观格局优化。研究结果为闭清县的生态环境规划和建设提供理论依据和参考价值。

英文摘要：

Landscape patterns are formed from long-term interactions of natural factors and human disturbances. In the processes of landscape ecology, landscape patterns determine landscape functions. As such, the relationship between landscape patterns and human disturbance intensity is needed to be quantitatively analyzed. Landscape elements that promote the ecological processes should be unraveled. The abovementioned two measures are helpful for sustainable development of the regional environment. In this paper, we investigated landscape patterns of Minqing County based on GIS and two scenes of satellite imageries acquired in 2000 and 2005. Landscape metrics of typical significance were chosen to quantify landscape pattern changes. Meanwhile, methods of landscape ecology and geo-statistics were comprehensively used to study the relationship between landscape spatial pattern variation and human disturbance intensity. Results demonstrated that： 1） the degree of landscape fragmentation was significantly reduced, and patches density of dry land, paddy fields, woodland, grassland, water bodies, and unused land were significantly reduced. Patch density of construction land increased. The average patch area of all landscape elements increased. Landscape types were increasingly controlled by a minority of patches, and the degree of regional connectivity was moderate. The change in the landscape pattern was essentially consistent with changes in human disturbance intensity. 2） The distribution of human disturbance intensity and its change were essentially consistent with the intensity and direction of urban expansion. Areas with low-middle impact strength kept fairly invariant. While areas with middle and middle-high impact strength increased. Patches with high impact strength also increased. The region with strong disturbance intensity was distributed mainly in the county town and around villages and towns. With speeding up of the urbanization process, the spread of disturbance intensity continued to improve. Areas whose d