国土空间功能分区是构建可持续开发保护格局、提升资源利用效率的重要途径,但传统方法多侧重功能相似性识别,缺乏对生态、农业、城镇等多类管理目标及成本效益的系统统筹。该研究引入系统保护理念,构建“目标-成本-效益”协同优化的国...国土空间功能分区是构建可持续开发保护格局、提升资源利用效率的重要途径,但传统方法多侧重功能相似性识别,缺乏对生态、农业、城镇等多类管理目标及成本效益的系统统筹。该研究引入系统保护理念,构建“目标-成本-效益”协同优化的国土空间功能分区理论框架,综合运用适宜性评价、景观格局指数分析和分区优化模型(Marxan with Zones),形成由主导功能区与功能混合区构成的分区方法,并在江阴市开展实证研究。结果表明:1)优化分区方案显著提升了自然生态系统的代表性与保护效益,乔木林地、灌木林地等关键生态系统的保护比例提升至30%以上。2)在满足生态保护目标的前提下,农业与城镇功能空间得到适度拓展,基本农田和城镇开发规模较现状有所增加,单位面积成本增幅保持在10%以内,体现出较强的综合效益。3)优化方案在空间结构上呈现较高的集聚性与协调性,集约化农区聚集度由71.21提升至88.5,通过功能混合区在严格保护区与城镇建设区之间构建了有效的过渡带,缓解了潜在的空间利用冲突。研究可为高冲突区域优化国土空间格局和完善主体功能区制度提供方法与实践参考。展开更多
Complex energy and environment system, especially nuclear fuel cycle system recently raised socialconcerns about the issues of economic competitiveness, environmental effect and nuclear proliferation. Only underthe co...Complex energy and environment system, especially nuclear fuel cycle system recently raised socialconcerns about the issues of economic competitiveness, environmental effect and nuclear proliferation. Only underthe condition that those conflicting issues are gotten a consensus between stakeholders with different knowledgebackground, can nuclear power industry be continuingly developed. In this paper, a new analysis platform has beendeveloped to help stakeholders to recognize and analyze various socio-technical issues in the nuclear fuel cycle systembased on the functional modeling method named Multilevel Flow Models (MFM) according to the cognition theoryof human being. Its character is that MFM models define a set of mass, energy and information flow structures onmultiple levels of abstraction to describe the functional structure of a process system and its graphical symbol representationand the means-end and part-whole hierarchical flow structure to make the represented process easy to beunderstood. Based upon this methodology, a micro-process and a macro-process of nuclear fuel cycle system wereselected to be simulated and some analysis processes such as economics analysis, environmental analysis and energybalance analysis related to those flows were also integrated to help stakeholders to understand the process of decision-making with the introduction of some new functions for the improved Multilevel Flow Models Studio, and finallythe simple simulation such as spent fuel management process simulation and money flow of nuclear fuel cycleand its levelised cost analysis will be represented as feasible examples.展开更多
文摘国土空间功能分区是构建可持续开发保护格局、提升资源利用效率的重要途径,但传统方法多侧重功能相似性识别,缺乏对生态、农业、城镇等多类管理目标及成本效益的系统统筹。该研究引入系统保护理念,构建“目标-成本-效益”协同优化的国土空间功能分区理论框架,综合运用适宜性评价、景观格局指数分析和分区优化模型(Marxan with Zones),形成由主导功能区与功能混合区构成的分区方法,并在江阴市开展实证研究。结果表明:1)优化分区方案显著提升了自然生态系统的代表性与保护效益,乔木林地、灌木林地等关键生态系统的保护比例提升至30%以上。2)在满足生态保护目标的前提下,农业与城镇功能空间得到适度拓展,基本农田和城镇开发规模较现状有所增加,单位面积成本增幅保持在10%以内,体现出较强的综合效益。3)优化方案在空间结构上呈现较高的集聚性与协调性,集约化农区聚集度由71.21提升至88.5,通过功能混合区在严格保护区与城镇建设区之间构建了有效的过渡带,缓解了潜在的空间利用冲突。研究可为高冲突区域优化国土空间格局和完善主体功能区制度提供方法与实践参考。
文摘Complex energy and environment system, especially nuclear fuel cycle system recently raised socialconcerns about the issues of economic competitiveness, environmental effect and nuclear proliferation. Only underthe condition that those conflicting issues are gotten a consensus between stakeholders with different knowledgebackground, can nuclear power industry be continuingly developed. In this paper, a new analysis platform has beendeveloped to help stakeholders to recognize and analyze various socio-technical issues in the nuclear fuel cycle systembased on the functional modeling method named Multilevel Flow Models (MFM) according to the cognition theoryof human being. Its character is that MFM models define a set of mass, energy and information flow structures onmultiple levels of abstraction to describe the functional structure of a process system and its graphical symbol representationand the means-end and part-whole hierarchical flow structure to make the represented process easy to beunderstood. Based upon this methodology, a micro-process and a macro-process of nuclear fuel cycle system wereselected to be simulated and some analysis processes such as economics analysis, environmental analysis and energybalance analysis related to those flows were also integrated to help stakeholders to understand the process of decision-making with the introduction of some new functions for the improved Multilevel Flow Models Studio, and finallythe simple simulation such as spent fuel management process simulation and money flow of nuclear fuel cycleand its levelised cost analysis will be represented as feasible examples.
