| 海绵城市源头设施运行阶段减污降碳及协同路径 |
| 摘要点击 925 全文点击 153 投稿时间：2024-03-12 修订日期：2024-05-12 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 海绵城市 源头控制设施 减污降碳 NSGA-Ⅱ 多目标优化 |
| 英文关键词 sponge city source control facilities pollution and carbon emission reduction NSGA-Ⅱ multi-objective optimization |
|
| 中文摘要 |
| 我国正处于系统化全域推进海绵城市建设和全面实施“减污降碳协同增效”的关键时期,亟需科学认识海绵城市源头设施运行阶段的减污降碳效益及协同路径. 以江苏省无锡市30个海绵城市建设项目为例,分析了海绵源头设施运行阶段的减污、降碳及与建设成本三者的协同关系,并运用带约束的NSGA-Ⅱ多目标优化算法提出了三者协同路径. 结果表明,海绵源头设施（入渗型雨水花园、排水型雨水花园、下凹绿地、植草沟、透水铺装）的减污降碳能力和降碳能力组成（植被固碳、径流调蓄降碳、污染削减降碳）存在差异,且海绵源头设施的下垫面面积占比对项目减污降碳效益和成本产生影响但存在边际效应,主要表现为透水铺装的下垫面面积占比对项目减污效益的影响存在边际效应（R2=0.423 9）. 海绵项目的减污效益与降碳效益协同性较弱,其中减污效益存在边际成本递增趋势（R2=0.784 4）,降碳效益则与建设成本线性相关（R2=0.544 7）,进一步通过多目标优化算法提出了不同优化目标下的海绵源头设施组合方案. 以上结果明晰了海绵源头设施运行阶段的减污降碳效益及协同路径,可为海绵城市建设实现“减污、降碳、扩绿、增长”目标和生态价值最大化提供科学依据. |
| 英文摘要 |
| China is currently at a crucial stage of systematically advancing the construction of sponge cities and completely implementing the “synergetic enhancement of pollution and carbon emission reduction.” The pollution and carbon emission reduction benefits during the operational phase of sponge source control facilities, as well as the synergistic path must be crucially understood scientifically. Taking 30 sponge city construction projects in Wuxi, Jiangsu Province as examples, we analyzed the pollution and carbon emission reduction benefits, construction costs, and determined the synergistic relationship among them during the operational phase. Additionally, we proposed a synergistic path among the three by utilizing a constrained NSGA-Ⅱ multi-objective optimization algorithm. The results showed differences in the pollutant and carbon reduction capacity and the composition of carbon reduction capacity （carbon sequestration by vegetation, carbon storage by runoff, and carbon reduction by pollution reduction） of sponge source control facilities （infiltration rain gardens, drainage rain gardens, undercrofts, planted swales, and permeable pavement）. Therefore, the ratio of the underlying surface area of the sponge source control facilities influenced the pollutant and carbon emission reduction benefits and costs of the project； however, a marginal effect was observed, which was mainly reflected in the permeable pavement to the pollution reduction benefits of the project （R2=0.423 9）. The synergy between the pollution reduction benefit and carbon emission reduction benefit of sponge projects was weak, in which the pollution reduction benefit had a trend of increasing marginal cost for the pollution reduction benefit （R2=0.784 4）, whereas the carbon emission reduction benefit was linearly correlated with the construction cost （R2=0.544 7）. Furthermore, a multi-objective optimization algorithm was employed to propose a series of distinct combinations of sponge source control facilities, each optimized for a distinct set of objectives. The results elucidate the pollution and carbon emission reduction benefits and synergistic optimization path of sponge source facilities in the operation phase, which can provide scientific basis for achieving the goal of “pollution and carbon emission reduction, greening, and growth” and maximizing ecological value. |
|
|
|
