Journal of Resources and Ecology ›› 2021, Vol. 12 ›› Issue (5): 593-599.DOI: 10.5814/j.issn.1674-764x.2021.05.002

• Human Activities and Ecological Security • Previous Articles     Next Articles

Analysis of the Spatio-temporal Changes in Acid Rain and Their Causes in China (1998-2018)

CHEN Xuan1,2(), SHAN Xiaoran1,2, SHI Zhaoji1,2, ZHANG Jiaen1,2,3,4,*(), QIN Zhong1,2,3,4, XIANG Huimin1,2,3,4, WEI Hui1,2,3,4   

  1. 1. College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
    2. Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, Guangzhou 510642, China
    3. Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China
    4. Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
  • Received:2020-09-12 Accepted:2021-03-30 Online:2021-09-30 Published:2021-11-30
  • Contact: ZHANG Jiaen
  • About author:CHEN Xuan, E-mail:877046204@qq.com
  • Supported by:
    The National Natural Science Foundation of China(U1701236);The Science and Technology Planning Project of Guangdong Province(2019B030301007)

Abstract:

With the rapid development of the economy, acid rain has become one of the major environmental problems that endanger human health. Being the largest developing country, the environmental problems caused by acid rain are of increasing concern with the rapid industrialization and urbanization in China. Recently, many researchers have focused on acid rain. To better understand the temporal and spatial dynamics of acid rain in China, the monitoring data on acid rain from 1998 to 2018 were studied using ArcGIS 10.2. The results show that the proportion of acid rain cities, the frequency, and the area of acid rain were decreasing, however, the situation still remains serious. Overall, the chemical type of acid rain was mainly sulfuric acid rain. However, the concentration ratio of SO4 2-/NO3 - decreased by 81.90% in 2018 compared with 1998, and presented a decreasing trend, which indicates that the contribution of nitrate to precipitation acidity has been increasing year by year. This research will help us to understand the distribution characteristics and causes of acid rain in China, and it may provide an effective reference for the prevention and control of acid rain in China.

Key words: acid rain, pH, spatio-temporal change, chemical composition, trend