苏州市土地利用变化对生态系统固碳能力影响研究

Study on the Impact of Land Use Change on the Capability of Carbon Sequestration of Ecosystem in Suzhou City

研究目的:分析苏州市土地利用变化对区域生态系统固碳能力的影响,为新一轮规划修编提供技术支撑。研究方法:文献资料法,统计分析法。研究结果:上轮规划实施以来,苏州市生态系统固碳能力急剧下降。其中,耕地固碳量急剧下降,林地、园地、城市绿地以及其他地类的固碳量略有增加。研究结论:耕地面积减少与复种指数下降是苏州市生态系统固碳能力下降的主要原因。

The purpose of this paper is to analyze the impact of land use change on the capability of carbon sequestration of the regional ecosystem in Suzhou City in order to offer technical support for the new round revision of land use planning. Methods of documentation and statistical analysis are used. The results reveal that the capability of carbon sequestration of the ecosystem in Suzhou has decreased rapidly since the implementation of the current round of land use planning, amongst which the capacity of cropland decreased rapidly, and the capacities of forestland, garden plots, urban greenbelt and other land uses increased slightly. The conclusion discloses that the decrease of the capacity of carbon sequestration of the ecosystem in Suzhou is mainly due to the decrease of multiple crop indexes and the acreage of the cropland area.