鄱阳湖区土地利用变化的碳排放效应研究

A Study on Carbon Emission Effects of Changes in Land Use in Poyang Lake Region

土地利用是造成碳排放的重要原因。利用2000年、2005年和2010年的3期遥感影像,分析了2000—2010年鄱阳湖区土地利用变化特征,并运用碳排放估算模型,对鄱阳湖区不同土地利用方式的碳排放进行了计算和分析。结果表明:(1)2000—2010年鄱阳湖区碳排放量持续增加,从2000年的431.85×104t增加到2010年的1 194.37×104t,增加了1.77倍;(2)鄱阳湖区各县(市、区)的碳排放强度差异较明显;(3)调整土地利用方式、限制建设用地扩张、转变经济增长方式、优化能源结构是减少鄱阳湖区碳排放的主要措施。

Land use is one of the most important factors that cause carbon emission.This paper firstly analyses the characteristics of changes in land use in Poyang Lake Region from 2000 to 2010 by using the Landsat TM data in 2000,2005 and 2010.Then it calculates and analyses the carbon emissions which is influenced by different land use types from 2000 to 2010 according to the assessment model of carbon emission.The results show：（1）the total of carbon emissions amounts increased rapidly from 4 318.50 thousand tons in 2000 to 11 943.70 thousand tons in 2010 ; （2） the amounts of carbon emission in different counties of Poyang Lake Region were different;（3） some suggestions for reducing carbon emission are put forward which include adjustment of land use structure,limit for the increase of construction land adjustment of economic growth and optimization of energy structure,etc.