【摘要】 以扬州市江都区为例，评估了国土生态服务价值，并据此选取了生态重要功能区；通过构建生态阻力面计算了生态连通性，并叠加人口密度分析了国土生态与人居系统空间耦合的等级、类型及格局；设置了低、中、高3种投入情景，探究了基于生态服务人居通达性的国土生态空间优化，提出了相应的对策建议。结果表明：（1）研究区生态连通性—人居耦合度较高，中等耦合度以上区域面积占比达58.93%，耦合类型以人居耦合滞后型为主导，占比55.64%;(2)研究区生态服务人居通达性整体水平较高，中等通达性以上区域面积占比60.24%，但存在两极分化现象；（3）通过生态人居空间耦合可识别生态服务人居通达性提升的关键区域。低、中、高3种投入情景中生态服务人居通达性均有不同程度的提高，其中高投入情景提升效果较好，中等通达性以上区域面积可增加28.47%。更多还原

【Abstract】 Taking Jiangdu District, Yangzhou City as the study area, this paper assessed the ecological service value of the territorial space, selected ecologically important functional areas accordingly, calculated ecological connectivity by constructing ecological resistance surface, analyzed the rank, type, and pattern of spatial coupling between ecological and human-habitat systems by superimposing population density, set t low, medium and high input scenarios, explored the optimization of territorial ecological space based on ecological service human habitat accessibility, and proposed the corresponding countermeasures and suggestions. The results show that:(1) The ecological connectivity and human habitat coupling degree in the study area is high,with 58.93% of area above medium coupling degree, and the coupling type is dominated by human habitat coupling lagging,accounting for 55.64%.(2) The overall level of ecological service human habitat accessibility in the study area is high, with 60.24% of area above medium accessibility, but there is a polarization phenomenon.(3) Spatial coupling of ecological and human habitat can identify the key areas for improving the ecological service human habitat accessibility. The ecological service habitat accessibility in the low, medium, and high input scenarios all have different degrees of improvement, among which the high input scenario has a better improvement effect, and the area above medium accessibility can increase by 28.47%.更多还原