天津市不同土地利用的碳排放特征及空间格局研究

Study on Characteristics and Spatial Pattern of Carbon Emission under Different Land Use in Tianjin City

调整土地利用结构、控制碳排放量是减小温室效应的有效途径之一。在对天津市2008—2012年土地利用变化规律进行分析的基础上,探讨了天津市及其各区县的碳排放变化特征与空间分布格局。结果表明:研究时段内,天津市建设用地面积增加,耕地和林地呈现减小特征;建设用地为天津市碳排放的主要来源,林地为碳吸收量的主要来源;耕地的碳排放量呈正空间自相关效应,高值高聚集区域集中在宝坻区;林地的碳排放量呈负空间自相关效应,低值低聚集区集中在东丽区和塘沽区。该研究以期为未来天津市进行土地利用结构调整和编制土地利用规划提供数据支持。

It was a useful way to decrease the greenhouse effect through adjusting land use structure to control carbon emission. This paper described characteristics and spatial pattern of carbon emission based on the analysis of change features of land use from 2008 to2012 in Tianjin. The results showed that the areas of farmland and forest land decreased significantly,as well as construction land increased. Construction land was the main source of carbon emissions,and forest land was the major source of carbon absorption. The farmland＇s carbon emission presented postive spatial autocorrelation,meanwhile high value and aggregation region was Baodi. Forest＇ s carbon absorption showed negative spatial autocorrelation,and low value and aggregation regions were Dongli and Tanggu. The research can provide data supporting for adjusting land use structure and making land use planning in future.