基于2008年COD排放量,对人均COD排放量和万元产值COD排放量的区域分布格局及其成因进行了定最分析;同时,基于1999-2008年cOD排放量和经济发展数据,建屯了31个省区万元产值COD排放堪随人均GDP变化的环境学习曲线,并以所建立的环境学习曲线为依据,分析了1999、2002、2005和2008年4个时段的减排潜力变化及COD减排潜力的空间分布.结果表明:经济发展水平越高的地区,万元产值COD排放的负荷越小,万元产值COD减排的潜力越小;反之,经济发展水平越低的地区,万元产值COD排放的负荷越大,万元产值COD减排的潜力越大.%Based on COD emissions data of 2008, the area distribution patterns of two indexes (COD emission per capita and COD emissions per unit production value) as well as their reasons were quantitatively analyzed. Then, on the basis of COD emissions and economic development data from 1999 to 2008, environment learning curve of COD emission per ten thousand Yuan production value and GDP per capita were built in 31 provinces, and the change of COD emission following environment protecting consciousness enhancing and reducing emission technology advancing were discovered. According to the environment learning curve of COD emission, change of emission reducing potential of COD in four periods(1999, 2002, 2005 and 2008) were analyzed. The results show that in some provinces where the level of economic development is higher, environment burthen of COD emission is lower and emission reducing potential of COD is smaller; conversely, in other provinces where the level of economic is lower, environment burthen of COD emission is higher and emission reducing potential of COD is bigger.
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