碳氧平衡约束下武汉市土地利用结构优化情景模型研究

发布时间：2018-05-04 11:23

本文选题：生态用地 + 碳氧平衡　；参考：《长江流域资源与环境》2015年12期

【摘要】：碳氧平衡法可通过比较人类活动引起的释碳耗氧量与生态用地的固碳释氧能力之间的平衡关系来测算碳氧平衡标准下生态用地需求量。以武汉市为例,遵循"环境友好、资源节约"的两型社会建设原则构建了土地利用综合效益最优的多目标函数,以2013年为基期年且2020年为目标年,探索了碳氧平衡约束条件下武汉市土地利用结构的优化方向。研究结果表明:土地利用结构优化后2020年较2013年增加了40 908hm2标准生态用地,产生431亿元的综合效益,年固碳能力和释氧能力分别达到532.03万t和1 418.33万t,分别占武汉市释碳耗氧量的43.25%和30.29%,能完成区域内的固碳任务且有盈余,但不能实现区域内的氧平衡。研究结果表明仅通过增加生态用地来维持碳氧平衡将难以为继,长期来看,必须转变发展方式来维持碳氧平衡状态。
[Abstract]:The carbon-oxygen balance method can be used to calculate the ecological land demand under the standard of carbon and oxygen balance by comparing the balance relationship between the carbon release oxygen consumption caused by human activities and the carbon sequestration and releasing ability of ecological land. Taking Wuhan City as an example, following the principle of "environmental friendliness and resource saving", a multi-objective function of optimal comprehensive benefit of land use is constructed, with 2013 as the base period and 2020 as the target year. The optimization direction of land use structure in Wuhan under the condition of carbon and oxygen balance is explored. The results show that 40 908hm2 standard ecological land use is increased in 2020 after land use structure optimization compared with 2013, and the comprehensive benefit is 43.1 billion yuan. The annual carbon sequestration capacity and oxygen releasing capacity reached 5.3203 million t and 14.1833 million t, respectively, accounting for 43.25% and 30.29% of the carbon release oxygen consumption in Wuhan City, respectively. The carbon sequestration task in the region was completed and there was a surplus, but the oxygen balance in the region could not be realized. The results show that it is difficult to maintain carbon and oxygen balance only by increasing ecological land use. In the long run, it is necessary to change the mode of development to maintain carbon and oxygen balance.
【作者单位】：华中农业大学公共管理学院;
【基金】：国家社会科学基金项目“基于系统仿真的城市土地利用碳排放分析与低碳利用调控研究”(14BGL218) 中央高校基本科研业务费专项资金“基于生态效率的土地差别化利用的实施保障机制研究”(662014RW007)
【分类号】：F299.23

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