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银川市城市生态经济系统的碳吸收与碳排放

裴银宝,刘小鹏**,李永红   

  1. (宁夏大学资源环境学院, 银川 750021)
  • 出版日期:2015-03-10 发布日期:2015-03-10

Carbon sequestration and carbon emission in eco-economic systems in Yinchuan City.

PEI Yin-bao, LIU Xiao-peng**, LI Yong-hong   

  1. (School of Resources and Environment, Ningxia University, Yinchuan 750021, China)
  • Online:2015-03-10 Published:2015-03-10

摘要: 基于生态经济学、统计学和地理学理论,借助物质流分析法(MFA)和指数平滑法(ES),并以碳汇与碳排放计算结果等为分析数据,对2006—2012年银川市生态经济系统中的碳流动进行了分析。结果表明:(1)银川市碳吸收总量为波动增长,碳排放总量保持高速增长。经济系统的碳排放量要远高于生态系统的碳吸收量,生态经济系统碳滞留量过度膨胀。(2)农田和湿地是银川市生态系统的主要碳吸收库。玉米、水稻和小麦的固碳比重较大,人工湿地、湖泊与沼泽的碳储存较多。碳汇空间受非绿色用地挤压,碳吸收量增长缓慢。能源、交通和建筑是银川市三大碳排放源。能源碳排放主要集中在原煤、原油和天然气消耗上,公路货运和施工建筑碳排放增长迅猛。(3)未来5年,银川市碳吸收预估量每年保持3.96%的增长率;碳排放预估量年均增长1140.92×104 t,预估增速有所下降,碳排放量将会处于高基准、低增长阶段。银川市经济增长的生态成本较高,经济发展对生态环境的依赖较大,发展方式没有实现低碳转型。

关键词: 放线菌剂, 光合作用, 生物量, 种子包衣, 根系发育

Abstract: On the basis of the theory of ecoeconomics, statistics and geography, material flow analysis (MFA) model and exponential smoothing (ES) were used in this study to figure out the situations of carbon sequestrations and carbon emissions. Furthermore, the carbon flow in the ecoeconomic systems in Yinchuan from 2006 to 2012 was analyzed. Results showed that: (1) The total amount of carbon sequestration in ecosystems showed a trend of fluctuant growth, while the amount of carbon emission in economic systems kept rising, being far higher than the former. The detained amount of carbon in ecoeconomic systems was expanded excessively. (2) Farmland and wetland in the ecosystems of Yinchuan were the main carbon reservoir. The proportions of carbon sequestration in maize, rice and wheat were greater City  artificial wetland, lake and swamp mainly stored carbon. However, the space of carbon sink was squeezed by the nongreen space, which made the amount of carbon sequestration grow slowly. Moreover, energy, transportation and building were the three main carbon sources in Yinchuan City. Energy carbon emission concentrated on the consumptions of raw coal, crude oil and natural gas. In addition, the amount of carbon emission in highway freights and underconstructions grew rapidly in the period studied. (3) In the next five years, the amount of carbon sequestration in the city would be increased, with a growth rate of 3.96% annually. The increment of carbon emission would be up to 1140.92×104 t annually, which was predicted to decrease. Thus, the carbon emission would be in a phase of high benchmark and low growth rate. The results mentioned above suggest that ecological cost for economic development in Yinchuan City had been too expensive and economic development depended more on the ecological environment. Therefore, a low carbon transition during the development is imperative in the future.

Key words: seed coating, actinomycetes agent, biomass, root growth, photosynthesis