Agricultural non-point source pollution discharge characteristic and its control measures of Dongtinghu Lake
LU Shao-yong1, ZHANG Ping1,2, PAN Cheng-rong2,3, PENG Shu-chuan2, LIU Xiao-hui1
1. Engineering and Technology Center of Lake, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, Research Centre of Lake Environment, State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;
3. China Anhui Institute of Environmental Science, Hefei 230009, China
To clarify the spatial characteristics of agricultural non-point source pollution in Dongtinghu Lake. Pollution loads from agricultural nonpoint sources in Dongtinghu Lake were estimated and evaluated according to the approach of export coefficient modeling as well as the equal standard pollution method. In addition, spatial distribution of non-point source pollution load was drew by GIS. The results demonstrated that total nitrogen and total phosphorus loads in Dongtinghu Lake respectively were104556.9t/a, 12719.02t/a; 103643.71t/a and 13032.79t/a in 2010 and 2014. The magnitude order of the contribution to various types of pollutant sources was as following, 1) dry land > paddy field > livestock and poultry breeding > forest land > rural life for total nitrogen load; 2) livestock and poultry breeding > dry land > paddy field > woodland > rural life for total phosphorus load, respectively. Dry land and livestock farming was the main source of agricultural non-point source pollution load. For the spatial regularity, the space TN, TP pollution distribution is consistent, but regional differences between TN and TP in the output load. The priority control areas were Taoyuan county, HanShou, Lixian, Ding cheng, Nanxian, Anhua, Huarong, where the ANP output load was high. With clustering analysis method, the agricultural non-point source pollution was divided into 4types of pollution, and control countermeasures were put forward.
卢少勇, 张萍, 潘成荣, 彭书传, 刘晓晖. 洞庭湖农业面源污染排放特征及控制对策研究[J]. 中国环境科学, 2017, 37(6): 2278-2286.
LU Shao-yong, ZHANG Ping, PAN Cheng-rong, PENG Shu-chuan, LIU Xiao-hui. Agricultural non-point source pollution discharge characteristic and its control measures of Dongtinghu Lake. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(6): 2278-2286.
Kronvang B. Diffuse Nutrient Losses in Denmark[J]. Water Science and Technology, 1996,33(4/5):81-88.
[2]
Atsushi I, Kiyoshi Y. Study on characteristics of pollutant runoff into Lake Biwa Japan[J]. Water Science and Technology, 1999, 39(12):17-25.
[3]
Miller G T. 1992. Living in the Environment:An Introduction to Environmental Science[M]. Seventh Edition. Belmont:Wadsworth Publishing Company, 602-611.
Liu J C, Zhang L P, Zhang Y Z, et al. Validation of an agricultural non-point source (AGNPS) pollution model for a catchment in the Jiulong River watershed, China[J]. Journal of Environmental Sciences, 2008,20(5):599-606.
[6]
Ma X, Li Y, Zhang M, et al. Assessment and analysis of non-point source nitrogen and phosphorus lords in the Three Gorges Reservoir Area of Hubei Province, China[J]. Science of Total Environment (2011), doi:10.1016/j. scetotenv. 2011,9:034:79-81.
Worrall F, Burt T P. The impact of land-use change on water quality at the catchment scale:the use of export coefficient and structural models[J]. Journal of Hydrology, 1999,221(1/2):75-90.
[14]
Mc Farland A M S, Auck H L M. Determining nutrient export coefficients and source loading uncertainty using in stream monitoring data[J]. Journal of the American Water Resources Association, 2001,37:223-236.
[15]
Jordan C, Mcguckin S O, Smith R V. Increased predicted losses of phosphorus to surface waters from soils with high Olsen-P concentrations[J]. Soil Use and Management, 2000,16(1):27-35.
Worrall F, Burt T P. The impact of land-use change on water quality at the catchment scale:the use of export coefficient and structural models[J]. Journal of Hydrology, 1999,221(1/2):75-90.
[26]
Ierodiaconou D, Laurenson L, Leblanc M, et al. The consequences of land use change on nutrient exports:a regional scale assessment in south-west Victoria, Australia[J]. Journal of Environmental Management, 2005,74:305-316.
[27]
Shen Zhenyao, Chen Lei, Ding Xiaowen, et al. Long-term variation (1960~2003) and causal factors of non-point-source nitrogen and phosphorus in the upper reach of the Yangtze River[J]. Journal of Hazardous Materials, 2013,252/253:45-56.
Ma Xiao, Li Ye, Zhang Meng, et al. Assessment and analysis of non-point source nitrogen and phosphorus loads in the Three Gorges Reservoir Area of Hubei Province, China[J].Science of the Total Environment, 2011,412/413:154-161.
Ding X W, Shen Z Y, Hong Q, et al. Development and test of the Export Coefficient Model in the Upper Research of the Yangtze River[J]. Journal of Hydrology, 2010,383:233-244.
[38]
Han L X, Huo F, Sun J. Method for calculating non-point source pollution distribution in plain rivers[J]. Water Science and Engineering, 2011,4(1):83-91.
