|ZHOU Jiong, WEN Qian-qian, KANG Jing, LUO Hai-jiang, FENG Xue.Study on the Impact of Agricultural Non point Source Pollution on Rural Surface Water Quality in China and Countermeasures[J].Environmental Monitoring and Forewarning,2022,14(6):1-7
|关键词: 农业面源污染 农村地表水 农村环境监测 影响因素 相关分析 聚类分析
|Study on the Impact of Agricultural Non point Source Pollution on Rural Surface Water Quality in China and Countermeasures
ZHOU Jiong, WEN Qian-qian, KANG Jing, LUO Hai-jiang, FENG Xue
State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring, China National Environmental Monitoring Center, Beijing 100012, China
|Based on the monitoring data of rural surface water environmental quality in China from 2015 to 2021, the characteristics of rural surface water environmental quality has been analyzed. Relevant parameters of agricultural and rural social and economic activities were selected, and the correlation analysis was carried out with the proportion of major factors exceeding the standard in rural surface water. Taking 2020 as the base year, a cluster analysis was carried out on 9 indicators in 31 administrative regions across the country, covering three aspects: rural surface water quality, agricultural and rural activity level and pollution pressure, and environmental capacity. The results showed that the change trend, seasonal characteristics and main over standard factors of rural surface water in China showed obvious agricultural non point source pollution characteristics. The parameters such as rural population, agricultural input use and economic crop planting proportion have strong correlation with the main indicators exceeding the standard (R>0.9); Cluster analysis divides 31 administrative regions into 7 different types of agricultural non point source pollution. According to the characteristics of agricultural non point source pollution in different regions, some points are recommen ded such as promotion of standardized scale breeding, resource utilization of livestock and poultry manure, chemical fertilizer reduction action, promotion of efficient low risk pesticides and other agricultural non point source pollution control measures according to local conditions, further increase of the construction of rural domestic sewage treatment facilities, improvement of the rural environmental quality monitoring network, and strengthening the monitoring and evaluation of agricultural non point source pollution.
|Key words: Rural non point source pollution Rural surface water Rural environment monitoring Influencing factors Correlation analysis Cluster analysis