安徽省会经济圈土地利用变化的碳排放效益  

Effects of Carbon Emission by Land Use Patterns in Hefei's Economic Circle of Anhui Province

作　　者：孙贤斌[1] 

机构地区：[1]皖西学院资源环境与旅游管理学院,安徽六安237012

出　　处：《自然资源学报》2012年第3期394-401,共8页Journal of Natural Resources

基　　金：教育部人文社会科学规划基金项目(11YJA790134);安徽省哲学社会科学规划项目(AHSK09-10D185);安徽省人文地理学重点学科建设项目(皖西学院)

摘　　要：土地利用变化是影响碳排放的重要因素。利用1997和2007年土地利用类型数据,采用碳排放评价模型,对安徽省会经济圈碳排放效益进行评价,并估算碳排放生态补偿标准。研究结果显示:①1997—2007年间碳排放总量增加1 049.92×104t,年均增长14.4%;②2007年经济圈内地均建设用地碳排放强度和地均碳排放强度分别为1997年的2.41倍、2.18倍,1997和2007年,碳排放强度指数值都是合肥市>巢湖市>六安市;③经济圈内各县(区)地均碳排放强度差异显著,建设用地平均碳排放强度前3位的是合肥市区、霍山县、金寨县;④据中国造林成本的价格估算,合肥、巢湖、六安3市的碳汇补偿增加量分别为:21.83×108、4.31×108、2.48×108元,县域生态补偿额差异显著;⑤土地利用结构、产业结构与碳排放量存在一定的关系。从碳排放效益和生态补偿的角度,提出减少碳排放的途径。Land use change is an important tactor tbr carbon emission. According to the assess- ment model and by using the Landsat TM data separately acquired in 1997 and 2007 on the eco- nomic circle of Hefei, the provincial capital of Anhui, the authors utilized data of land use types such as cultivated land, woodland, grassland and land for construction in 1997 and 2007 to calcu- late carbon emissions and the compensation standard based on price of fixation carbon dioxide. The results shows： 1 ） Carbon emissions greatly varied over different land use types, in which the land for construction and cultivated land were considered as two major carbon sources. Woodland and grassland were two major carbon sinks. Carbon emissions were found to increase by 14.4% per year over the entire economic circle of Hefiei from 1997 to 2007. Carbon emissions increased most quickly in the city, with an average annual growth rate of 32.3% during the ten years. With more impacts of human activities, carbon emission from land for construction was the highest, in- creased from 7.4587 million tons in 1997 to 17. 9409 million tons in 2007. However, carbon sink maintained generally stable during this period. 2 ） Two indexes describing carbon emissions, i. e. , carbon emission per unit area of land and carbon emission per unit area of construction land, were proposed. These two indexes could better reflect carbon emission intensity from 1997 to 2007 and the differences among the regions. Compared with carbon emission intensity in 1997, the two indexes increased by 1.18 and 1.41 times in 2007, respectively. Carbon emissions peak- ed in Hefei city, and showed a relatively higher level in Chaohu city and a low level in Lu＇ an cit- y, and the index of carbon emission per unit area of land and construction land indicated the same changing trend. 3 ） Carbon emission per unit area of land was markedly different in 15 counties or urban areas, and the three largest ones per unit area of construction land are urban area of Hefei city, Huoshan and

关 键 词：土地利用变化 碳排放 安徽省会经济圈 

分 类 号：F301.24[经济管理—产业经济]