基于土地利用的碳排放时空分析——以浙江省为例

Spatial–Temporal Analysis of Carbon Emissions from Land-Use:A Case Study in Zhejiang Province

根据1996-2010年间浙江省11个地区土地利用状况与能源消耗数据,计算各地区碳排放量,分析碳源、碳汇、碳排放总量及地均建设用地碳排放。研究结果显示：浙江省的碳源主要是建设用地上的能源消耗,且增长显著;林地总体属碳汇区,但林地面积逐年减少,碳汇效率渐趋降低;15年间各地区碳排放的变化,与经济发展的阶段性具有一致性规律。浙江省的碳排放基本呈二面夹二带格局：宁绍平原与温瑞平原是主要的碳源区,金华与衢州以北地区次之,以南地区碳源与碳汇总体平衡。浙江省低碳土地利用方式有待进一步改善。

This paper examines patterns of land use and of energy consumption（coal,oil,and natural gas） in 11 regions in Zhejiang Province for the period 1996–2010.For each region,the total carbon emissions,carbon sources,and carbon sinks were analyzed,as were the average carbon emissions on construction land.The results show that the carbon sources in the province derive mainly from energy consumption on construction land,and that the consumption ranged from 615.07 × 108 tons in 1996 to 6704.34 × 108 tons in 2010.Woodlands are a carbon-sink area,but their area is reducing year by year and the efficiency of the carbon sink is gradually reducing.The pattern of change of carbon emissions over the 15-year period is consistent with the trend of economic development of the host regions.The carbon emissions in Zhejiang Province show a spatial pattern which are： Ningbo–Shaoxing plain and Wenzhou-Rui’an plain are the two main carbon source areas,and the northern areas of Jinhua and Quzhou cities are the secondary carbon source areas,although the southern parts of Jinhua and Quzhou cities represent a general equilibrium between carbon sources and sinks.The extent and/or degree of lowcarbon land use needs to be increased in Zhejiang Province.