التفاصيل البيبلوغرافية
| العنوان: |
Response of PM2.5 pollution to land use in China. |
| المؤلفون: |
Lu, Debin1,2 (AUTHOR) ludebin@zju.edu.cn, Xu, Jianhua3 (AUTHOR), Yue, Wenze1 (AUTHOR) wzyue@zju.edu.cn, Mao, Wanliu4 (AUTHOR), Yang, Dongyang5 (AUTHOR), Wang, Jinzhu6 (AUTHOR) |
| المصدر: |
Journal of Cleaner Production. Jan2020, Vol. 244, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*LAND use, *FORESTS & forestry, *POLLUTION, *ECONOMETRIC models, *TREND analysis, *CARBONACEOUS aerosols, *DUST |
| مصطلحات جغرافية: |
CHINA |
| مستخلص: |
As the spatial carrier of the emission sources and influencing factors of PM 2.5 , land use and its changes can inevitably affect local and regional PM 2.5 concentrations. The relationship between the growth of PM 2.5 and the changes of land use in China during 1998-2015 was explored in this paper using the Theil-Sen median trend analysis, Mann-Kendall and spatial econometric model. The results showed that the area where PM 2.5 concentration was less than 10 μg/m3 accounted for a small portion (18.33%) of the land area in China, and the area where PM 2.5 concentration was more than 35 μg/m3 accounted for 31.30% of the land area. High PM 2.5 concentration was found in the East China Plain and Taklimakan desert; artificial surfaces, cultivated land and deserts were coated with high PM 2.5 concentration more frequently, while the forest, grassland and unused land were usually covered with low PM 2.5 concentration. PM 2.5 concentration in desert land and artificial surfaces respectively increased at a pace of 1.07 μg/m3 and 0.80 μg/m3 per year during 1998–2015, higher than those in other land use types. They mainly came from the sand dust aerosol in northwest China, while those in the other areas mainly came from emissions in the human activities. Therefore, reasonable coordinating the proportion of construction land, cultivated land, forest land and grassland in eastern China, and strengthening desert governance in northwest China, are suggested to reduce PM 2.5 concentration in China. Image 100 • PM 2.5 concentrations increased significantly in the central and western regions. • Land use type have significant impacts on PM 2.5 in different way. • PM 2.5 was affected by artificial surfaces and cultivated land in central-eastern China. • Sandy land in the desert areas had dominated effects on PM 2.5 in the northwest. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
