许昌市土地利用碳排放效应及其结构优化

Land Use Carbon Emission Effect and Structural Optimization in Xuchang City

针对许昌市土地利用结构和能源利用现状进行研究,运用碳排放量估算数学方法,分析各土地利用类型转移变化与碳排放效应之间的关系。结论表明:许昌市土地利用变化趋势是建设用地不断扩张,耕地、林地、草地、水域呈减少趋势,该市主要碳排放源是建设用地,其次是耕地,林地、草地、水域表现为碳汇。在此基础上提出土地利用结构优化措施。

The paper analysed the current situation of land use structure and energy utilization in Xuchang City, described the relationship between the change of land use type and the effect of carbon emission by using the mathematical estimation method. The results show that the land use change trend of Xuchang, that is the construction land is expanding and the cul- tivated land, forest land, grassland and water area are decreasing. The main source of carbon emissions is construction land, followed by cultivated land, and the forest land, grassland, water area are presented as carbon sink. Finally, the optimization measures of land use structure are propounded.