基于不同土地利用的吉林省碳排放时空格局分析

Analysis of Spatial-Temporal Pattern of Carbon Emission in Jilin Province Based on Different Land Use Types

利用吉林省2000—2013年的土地利用和能源消耗数据,运用基于碳排放系数的碳排放计算模型、K-均值聚类分析法和碳排放—GDP指标组合法,分析吉林省碳排放时空格局特征。研究结果表明:(1)2000—2013年吉林省净碳排放量迅速增加,由2000年的2 323.66×104t增加到2013年的6 258.79×104t。吉林省碳排放状况可划分为2个阶段,分别是经济低速增长碳排放快速增长阶段(2000—2006年)和经济快速增长碳排放缓慢增长阶段(2007—2013年)。(2)建设用地是主要碳排放源,对碳排放的贡献率超过84%,林地为主要碳吸收,但碳吸收量总体却在减少,平均每年减少1.44×104t。(3)吉林省净碳排放量区域差异显著,呈现出从东向西、从南向北(除白城)逐渐增加的趋势,以不同土地利用和净碳排放量为依据,各市州碳排放类型可以划分为4类。(4)分析吉林省各市州碳排放、GDP的变化,白城、辽源、白山和延边属于"低碳排放—低GDP型",松原、四平、长春和吉林属于"高碳排放—高GDP型",通化属于"中碳排放—中GDP型"。

Based on the data of land use and energy consumptions in Jilin province during 2000—2013,the carbon emission model on the basis of carbon emission coefficient,K-mean clustering analysis and carbon emission-GDP index combination method were used to analyze the spatial-temporal pattern of carbon emission in Jilin province.The following findings were obtained：（1）The net carbon emission increased rapidly from 2 323.66×10^4t in 2000 to 6 258.79×10^4t in 2013.The carbon emission in Jilin province experienced 2stages,which were the stage of low economic growth rate with rapid increase of carbon emission（2000—2006）,and the stage of rapid economic growth with slow increase of carbon emission（2007—2013）.（2）The construction land was the main carbon emission source,contributing to over 84% of the total carbon emission.The forest land played a key role in carbon absorption,but the carbon absorption amount of forest land generally decreased,with the average annual reduction of 1.44×10^4t.（3）There were obvious spatial differences of net carbon emission in Jilin province in 2013,with an increasing trend from east to west and from south to north（except Baicheng city）.According to the land use type and net carbon emission amount,the carbon emission types of different cities in Jilin province could be divided into 4categories.（4）The analysis of carbon emission and GDP of different cities showed that Baicheng city,Liaoyuan city,Baishan city and Yanbian city belonged to the type of low emission-low GDP,while Songyuan city,Siping city,Changchun city and Jilin city belonged to the type of high emission-high GDP,and Tonghua city belonged to the type of middle emission-middle GDP.