發(fā)布時間：2018-07-02 11:22

  本文選題：長三角城市群 + 時空分布　； 參考：《長江流域資源與環(huán)境》2017年05期

【摘要】：基于數(shù)理統(tǒng)計、空間插值技術(shù)、相關(guān)性分析與GIS地圖表達(dá),研究長江三角洲城市群AQI及各空氣含量因子污染濃度的時間、空間分布特征。通過提取國務(wù)院最新規(guī)劃的長江三角洲城市群空間分布數(shù)據(jù),劃分研究區(qū)為"一核五圈",探討了空氣質(zhì)量指數(shù)的時間變化特征和AQI、首要污染物的空間分布規(guī)律,定量評價了AQI與其污染因子的相關(guān)性,結(jié)果表明:(1)時間變化上,長三角城市群空氣質(zhì)量季均變化規(guī)律為夏季最好,冬季最差;月均變化呈波浪形分布,在1月份的平均濃度皆為最高;周均變化為:在一周后半段達(dá)到一周最大值;(2)空間分布上,分季節(jié)看,AQI在春、秋、冬三季空間梯度變化顯著,呈現(xiàn)北高、南低的分布格局。在首要污染物的分布上,以PM_(2.5)和O_3均分長三角地區(qū);(3)PM_(2.5)含量空間分布與AQI有較高相似性,均處于北高南低的分布狀態(tài),臭氧分布呈現(xiàn)東高西低,即較發(fā)達(dá)的城市臭氧含量相對較高的空間分布格局。最后通過相關(guān)性計算,AQI與PM_(2.5)相關(guān)性顯著,與O_3沒有明顯相關(guān)性,為長三角大氣污染防治提供依據(jù)。
[Abstract]:Based on mathematical statistics, spatial interpolation, correlation analysis and GIS map representation, the temporal and spatial distribution characteristics of AQI and air content factor pollution concentration in Yangtze River Delta urban agglomeration were studied. By extracting the spatial distribution data of urban agglomeration in the Yangtze River Delta, which is newly planned by the State Council, the study area is divided into "one core and five circles", and the temporal variation characteristics of air quality index and the spatial distribution of AQI and the primary pollutants are discussed. The correlation between AQI and its pollution factors was evaluated quantitatively. The results showed that: (1) the seasonal variation of air quality in Yangtze River Delta urban agglomeration was the best in summer and the worst in winter. The average concentration in January was the highest, and the weekly average was the highest in the second half of the week; (2) the spatial distribution of AQI in spring, autumn and winter was significant in spring, autumn and winter, showing a distribution pattern of high in the north and low in the south. In the distribution of primary pollutants, PM2.5 and OK3 were used to divide the Yangtze River Delta region, (3) the spatial distribution of PM2.5 content was similar to AQI, and the distribution of ozone was lower in the north and south, and the ozone distribution was lower in the east and the west. That is the spatial distribution pattern of relatively high ozone content in more developed cities. Finally, the correlation between AQI and PM2.5 was significant, but not with OK3, which provided the basis for the prevention and control of atmospheric pollution in Yangtze River Delta.
【作者單位】： 江西理工大學(xué)建筑與測繪工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(41261093) 江西省自然科學(xué)基金(2010GQS0080)~~
【分類號】：X51

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本文編號：2089955