深圳市绿地固碳能力演变探讨

Research on Carbon Sequestration Ability Evolution of Shenzhen Urban Greenbelt

基于深圳市2000、2004、2008、2012年的土地利用调查数据提取深圳市各行政区的绿地信息，利用CityGreen模型中的固碳模块计算了深圳市各行政区2000-2012年的绿地碳储量和年固碳量，对深圳市绿地固碳能力进行了评价。结果表明，2000-2008年深圳市绿地总面积呈现逐年减少的趋势，共减少89．69km^2。2012年出现少量反弹。增加4．19km^2；深圳市绿地固碳能力基本与绿地格局一致。研究结果反映出绿地面积和绿地结构组成是影响绿地固碳能力的主要因素，本结果能够有效指导城市规划和绿地建设。

The greenbelt information of Shenzhen administrative divisions were extracted based on 2000,2004,2008,2012 land use survey data.Using the carbon fixation module of CityGreen model,Shenzhen administrative divisions' carbon storage and carbon sequestration annual rate in 2000,2004,2008 and 2012 were calculated,and the carbon sequestration ability of Shenzhen urban greenbelt was evaluated.The results show that the total area of Shenzhen greenbelt present decreasing trend between 2000 and 2008,total reduction of 89.64 km2,and there is a small amount of rebound in 2012,increased 4.19 km2.The carbon sequestration ability of the greenbelts is consistent with their spatial-temporal pattern.The greenbelt area and its composition are the main factors influencing their ability of carbon sequestration.