湖南省农村主要空气污染物时空分布特征

Study on the temporal-spatial distribution of major air pollutants in Hunan rural area

为了了解湖南省农村主要空气污染物的时空分布特征,通过搜集与排放源相关的能源消费结构数据,运用清单核算法对14个市州农村地区主要空气污染物SO_2、NO_x、烟尘排放量和排放强度进行分析,得出其时空分布特征及主要成因。结果表明:主要空气污染物排放量存在较大差异,但年际变化均呈下降趋势;其排放强度的空间分布同样存在较大差异。随着清洁能源的推广,湖南省农村地区空气质量得到明显改善,但以煤为主的能源结构尚未发生根本性改变。

In order to reveal the temporal-spatial distribution of major air pollutants in Hunan rural areas, the data are gathered from 14 cities or prefectures of the consumption of energies which are related to the emission of air pollutants in the countryside, the inventory accounting is employed to analyze the temporal-spatial distribution of major air pollutants （SO2, TSP and NOx） and the main reasons behind them. The results show that, there is a rather huge disparity in the generation of the three main air pollutants, but it also finds that the emissions of all these three air pollutants are in decline. Moreover, there is a big difference in spatial distribution of emission intensity of the three main air pollutants. With the promotion of clean energy in Hunan Province, the air quality of rural areas in Hunan Province has been significantly improved, but a fundamental change in the coal-dominated energy structure has not yet occurred.