RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2023, Vol. 32 >> Issue (1): 162-171.doi: 10.11870/cjlyzyyhj202301015

Previous Articles     Next Articles

Risk Assessment and Spatial-temporal Distribution Characteristics of #br# Nitrogen and Phosphorus Pollution in Dongting Lake Basin

HU Guang-wei1,2,3, FENG Hai-li1,2, MA Yi-lan1,2, ZHOU Xi1,2, FENG Chang3, HUANG Li-yuan1,2   

  1. （1. Hunan University of Technology, Zhuzhou, Hunan province, 412007, China; 2. Hunan Provincial Key Laboratory of Comprehensive Utilization of Agricultural and Animal Husbandry Waste Resources, Zhuzhou, Hunan province, 412007, China; 
    3.College of City and Tourism, Hengyang Normal University, Hengyang, Hunan province, 421002, China）
  • Online:2023-01-20 Published:2023-03-09

PDF (PC)

71

Abstract: Agricultural non-point source pollution in Dongting Lake is becoming increasingly serious. It is a scientific issue to understand the spatial and temporal distribution characteristics of nitrogen and phosphorus pollution in Dongting Lake basin.The improved output coefficient model and equal-standard pollution load method were used to calculate the TN and TP pollution load of 25 counties (cities and districts) in Dongting Lake Basin. The spatial distribution map of TN and TP pollution load was drawn with GIS to analyze the temporal and spatial variation characteristics of TN and TP pollution load in the basin. The results show that：（1）From the perspective of spatial scale, TN and TP pollution load on dimensional emissions has obvious regional differences in characteristics, and counties and districts such as Anhua, Taoyuan, Shimen, Pingjiang and Taojiang counties are the key prevention and control areas of agricultural surface source pollution in the Dongting Lake basin, and the areas with higher pollution load are concentrated in the upper reaches of the basin. （2）From the perspective of time scale, the TN pollution load was 11.95, 10.90 and 6.95 ×104 t/a and TP pollution load was 7.60, 7.00 and 4.21 ×104 t/a in 2010, 2015 and 2019, respectively. The TN and TP pollutant loads in the Dongting Lake Basin showed a significant reduction trend, and the TN pollution load was always larger than the TP pollution load. （3）TN and TP pollution load also showed a decreasing law from livestock and poultry breeding, land use and residents' life. （4）Cluster analysis method was used to classify the basin into four types: compound pollution, livestock and poultry breeding pollution, land use pollution and residential life pollution. Finally, in order to promote the comprehensive control of nitrogen and phosphorus pollution in Dongting Lake Basin, combined with the temporal and spatial characteristics of TN and TP pollution loads, some measures were put forward, such as scientific fertilization for planting industry, rational planning of livestock and poultry breeding scale and zoning, improvement of rural living environment, and development of ecological agriculture in accordance with the reality.

No related articles found!
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] YAO Lin, SHEN Jing, WEN Xinlong, GAO Chao. Impact of Various Parameterization Schemes in WRF Model on Wind Simulation at the mountain Wind Power Station of Jiangxi Province[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(07): 1380 .
[2] SUN Huihui, ZHANG Xinping, LUO Zidong, SHANG ChengPeng, HE Xinguang, RAO Zhiguo. Analyses on Characteristics of Extreme Precipitation Indices in the #br# Yangtze River Basin in the Past 53 Years#br#[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(08): 1879 .
[3] WU Lang, ZHOU Tinggang, WEN Li, LIU Xiaolu, ZHU Xiaobo. Study on SpatioTemporal Relationship Between PM2.5 and Urbanization Based on Remote Sensing Data——A Case Study of ChengduChongqing Urban Agglomeration[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(09): 2142 -2152 .
[4] FANG Lin, , WU Fengping, WANG Xinhua, YU Yantuan.  

Analysis of Agricultural Water Efficiency Measurement and Improvement Potential Based on Meta Frontier SBM Model [J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(10): 2293 -2304 .
[5] MA Xiaoliang, LIU Guimin, WU Xiaodong, XU Haiyan, YE Linlin, ZHANG Xiaolan.  

Seasonal Variations of Dissolved Organic Carbon Exports in Streams Under Alpine Meadow in the Three Rivers’ Headwater Regions, Qinghai Tibetan Plateau [J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(10): 2387 -2394 .
[6] SU Fang, ZHENG Ya-ping, KAN Li-na, CAI Sha . Evaluation of Services Value of Public Green Space in Provincial Capitals of Urban Agglomeration in Western China[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(11): 2434 -2442 .
[7] ZHU Liyi, HE Wei, ZHU Biran, . Effect of the Lead Bioconcentration and Toxicity Combined with Silicon Dioxide  Nanoparticles on the Thyroid Endocrine System of Zebrafish Larvae[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2018, 27(11): 2588 -2596 .
[8] LV Le-ting, WANG Xiao-rui, SUN Cai-zhi, ZHANG Jie. Study on the Spatiotemporal Variations of Blue and Green Water Resources in Xi River Basin Using the SWAT Model[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2019, 28(01): 39 -47 .
[9] . Status of the Early Stage Fish Resources at Huangshi Section in the Middle Reaches of the Yangtze River[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2019, 28(01): 60 -67 .
[10] HU Xiao, YU Ying-Jun , WEI Yong-Cai , HONG Liang , ZHANG Yong-Nian , SHI Xiao-tao, WU Rui. Investigation and Analysis on the Characteristic of Weir Baffle System in Culvert Fish-Way Based on Passage Efficiency Evaluation[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2019, 28(01): 134 -143 .
Copyright © RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, All Rights Reserved.
Powered by Beijing Magtech Co. Ltd