【摘要】 以衡阳盆地2003年和2013年两期森林资源二类调查数据为基础,运用生物量换算因子连续函数法,分别估算了2003年和2013年的植被碳储量,定量统计了2003—2013年间研究区碳储量的变化,并分析其变化特点和空间分布特征;同时基于衡阳盆地的土地利用变化情况,结合不同土地利用类型的平均碳密度,判定不同土地利用类型间的转化是碳汇还是碳源,探究土地利用变化与植被碳储量的关系。结果表明:在2003—2013年,衡阳盆地植被碳储量整体呈现增加趋势,10年间碳储量增加了118 103 t;在土地利用类型相互转化的过程中,使植被碳储量增加了946.78 t,土地利用类型的变化促进了碳排放的减少,是一个碳汇过程。更多还原

【Abstract】 Based on the survey data of forest resources in Hengyang Basin in 2003 and 2013, the vegetation carbon reserves of Hengyang Basin in 2003 and 2013 were estimated by using the method of continuous function of biomass conversion factor. The changes of carbon reserves in the study area were quantitatively counted between 2003 and 2013, and their variation characteristics and spatial distribution characteristics were analyzed. At the same time, according to land use variation of Hengyang Basin and combined with the average carbon density for different land use categories, carbon storage or carbon source for the conversion among different land use categories had been determined, then the relationship between land use variation and carbon storage of vegetation explored.The results show that:the carbon storage of vegetation in Hengyang Basin between 2003 and 2013 represented an overall trend of increasing, among this ten years, and it had increased 118 103 t; in the process of mutual conversion among land use categories from 2003 to 2013, the carbon storage of land vegetation increased 946.78 t, and the change of land use type promoted the reduction of carbon emissions, which was a carbon sink process.更多还原