北京城近郊区园林绿地多目标规划

北京市城近郊区人口密集,经济活动频繁,作为改善城市空气质量的重要环境资源之一,园林绿地提供了不可或缺的生态服务功能。针对研究区降尘大、SO_2浓度高以及生产生活耗氧量大等主要环境问题,以满足城市居民环境质量基本要求为目标,通过一系列决策变量与约束条件的设定,建立起北京城近郊区园林绿地多目标线性规划模型。应用Lingo 8．0软件对规划模型求解,结果表明,规划期(2020年)不同种类园林绿地面积分配较基期(2000年)更为合理,强调通过乔灌草相结合提高园林绿地整体生态服务功能,为北京建设生态城市提供了规划依据。

Multi-objective Programming Urban Green Space in Urban and Suburb Area of Beijing

Urban and suburb area of Beijing is a region with high population density and intense economic activities.As one of the most important environmental resources for air quality improvement,urban green space supplies many indis- pensable ecosystem services.The main environmental problems of the study area are dustiness,high SO_2 concentration, and large O_2 consumption.In order to meet city residents'requirements for environmental quality,a MLP(multi-objec- tive linear programming)model with a series of decision variables and constraint conditions is built to plan the urban green space in study area.Software Lingo 8.0 is used in the MLP model solving.According to modeling results,the plan- ning areas of different kinds of urban green space in 2020 will be distributed more reasonably than current situation (2000),and the combination of arbor,shrub and lawn will enhance total ecosystem services.The research results can be used in ecological city construction of Beijing.