中文摘要：

以安徽淮北市为例,针对城市发展所造成的城乡生态环境品质降低等问题,期望通过景观生态安全格局的构建,维护区域生态系统健康与稳定。文章基于生态系统服务和景观生态安全格局理论,利用生态服务功能价值评价以及耗费距离模型等分析方法,通过模拟重要生态廊道,与现有廊道进行对比,发现问题并提出优化策略,优化城市景观结构与功能,改善城乡生态系统服务。研究结果表明,淮北城市森林在空间上的衔接性不高;研究区域内众多湿地没有足够的廊道相连,尚未形成良好的湿地生态网络;主城区交通廊道密度较高,但连接度不够,乡村地区交通廊道分布较少且稀疏。因而进行城乡景观生态安全格局的构建十分重要和必要。研究结果可为淮北生态城市建设提供一定的参考,为其他相关研究提供思路和方法上的借鉴。

英文摘要：

Fast urbanization has aroused lots of environment problems.It is necessary to strengthen the spatial connections among landscape units,and to design urban landscape security pattern.Landscape contains a spatial structure connected by corridors and patches.To maintain the regional ecological balance and health,a landscape security pattern based on least-cost modeling in Huaibei,Anhui Province was designed.Eco-service theory was combined with landscape ecological pattern theory.Least-cost modeling（available as a toolbox in GIS-systems）was used to calculate effective distance.By using the method as well as evaluating the value of eco-service,some important ecological corridors were modeled.Compared with primary corridors,the problems were found and the ecological network was improved to build a secure landscape.Results showed that convergence degree of urban forest in Huaibei is not very high.There are not enough corridors to connect wetlands in study area,and cannot form a good wetlands network.Density of urban traffic corridors is high,but quantity of traffic corridors in rural is little and distribution is spare.It concluded that designing and constructing a security landscape pattern are very important and essential.The study would provide a reference for similar cities,and promote urban-rural future landscape ecological development.