常州市裸露地面风蚀扬尘排放清单及分布特征研究

以2014年为基准年,以常州市行政边界为研究区域,利用卫星遥感解译的土地利用类型和裸土面积信息,并通过国土、气象等部门提供的土壤类型、气象因子等相关资料获取本地化因子和参数,估算常州市行政区域内裸露地面土壤扬尘中颗粒物的年排放量。结果表明:常州市裸露地面主要分布在金坛市、溧阳市和武进区,市中心区域最少,裸露土地利用类型主要为农田、滩涂、裸露山体、荒地及未硬化或未绿化的空地等;2014年常州市行政区域内裸露地面风蚀扬尘中TSP、PM 10、PM 2.5的年排放量分别为62.66 t、5.63 t、0.24 t,其中,金坛市土壤起尘量最大,其次为武进区,再次为新北区、溧阳市,市中心区域土壤扬尘最少。

Research on Emission Inventory and Distribution Characteristics of Wind Erosion Dust from Bare Ground in Changzhou

The annual emission of soil dust from bare ground of Changzhou in 2014 was estimated according to land use types and bare soil area interpreted by satellite remote sensing technology,local soil types and meteorological factors from the departments of land and meteorology.Results showed that bare ground in Changzhou mainly distributed in Jintan,Liyang and Wujin districts,the least was in downtown.The main bare land use types were farmland,mud flat,bare mountain,wasteland,unhardened or no-afforesting vacant land.The annual emissions of TSP,PM 10 and PM 2.5 from wind erosion dust in bare land of Changzhou in 2014 were 62.66 t,5.63 t and 0.24 t,respectively.Among which,the maximun emission was in Jintan city,the second largest was in Wujin district,the third was in Xinbei district and Liyang city,and the least was in downtown area.