中文摘要：

随着长江沿江开发的不断深入，区域生态安全与开发建设的矛盾也越来越突出。以九江市沿江开发建设活动与区域生态系统空间结构、生态服务功能相互作用为理念，通过遥感、GIS技术手段，划分小流域单元。并将这些单元作为空间分析与评价的基础，选择工业集中区、城镇居民地、路网布局作为自然生态环境的影响因子或施压因子，以河流级别、湖泊数量和面积、地貌类型、坡度、植被覆盖程度、重要生态功能区类别等作为承压因子，综合叠加形成生态环境压力区划。并以此为基础，构建由5个生态源区和9条生态隔离、缓冲、生物多样性保护廊道组成的生态空间安全体系，用以减缓生态环境压力、消纳水气及土壤污染、稳定区域生态、推进沿江开发建设，实现生态保护空间与区域经济社会发展空间的有序融合，并对重要生态功能保护区提出管制的要求与措施。

英文摘要：

As the exploitation along the Yangtze River is developing in greater depth,the contradiction between regional ecological security and development and construction is becoming increasingly conspicuous. With the conception of interaction between construction along the Yangtze River in Jiujiang and spatial structure of regional ecosystem and function of the ecosystem service, adopting the technology of RS and GIS,based on minor watershed units, choosing industrial concentration area, town residents＇ ground and road structure as the token of influence of constructing activity, with the river class, the amount and the area of lake, geography type, slope, overlaid plant, category of important ecosystem function area as the token natural ecosystem background, environmental pressure plots are posed after comprehensive superimposed. According to it, an ecological security pattern should be established, consisting of 5 ecological sources and 9 ecological corridors for functions of resisting pollution,abating pressures and protecting biodiversity so as to abate pressure, resist pollution, stabilize regional ecosystem and impel the construction, make the environment protection space and regional economic and social development. And then the important protection areas of ecology function should be governed and preserved.