基于GIS的福建农田氮磷地表径流流失与污染风险评估

康智明, 张荣霞, 叶玉珍, 吴仁烨, 王松良

康智明, 张荣霞, 叶玉珍, 吴仁烨, 王松良. 基于GIS的福建农田氮磷地表径流流失与污染风险评估[J]. 中国生态农业学报(中英文), 2018, 26(12): 1887-1897. DOI: 10.13930/j.cnki.cjea.180118
引用本文: 康智明, 张荣霞, 叶玉珍, 吴仁烨, 王松良. 基于GIS的福建农田氮磷地表径流流失与污染风险评估[J]. 中国生态农业学报(中英文), 2018, 26(12): 1887-1897. DOI: 10.13930/j.cnki.cjea.180118
KANG Zhiming, ZHANG Rongxia, YE Yuzhen, WU Renye, WANG Songliang. GIS-based pollution risk assessment of nitrogen and phosphorus loss in surface runoff in farmlands in Fujian Province[J]. Chinese Journal of Eco-Agriculture, 2018, 26(12): 1887-1897. DOI: 10.13930/j.cnki.cjea.180118
Citation: KANG Zhiming, ZHANG Rongxia, YE Yuzhen, WU Renye, WANG Songliang. GIS-based pollution risk assessment of nitrogen and phosphorus loss in surface runoff in farmlands in Fujian Province[J]. Chinese Journal of Eco-Agriculture, 2018, 26(12): 1887-1897. DOI: 10.13930/j.cnki.cjea.180118

基于GIS的福建农田氮磷地表径流流失与污染风险评估

基金项目: 

福建省社科规划项目 FJ2018B070

福建农林大学国际科技合作与交流项目 KXb16017A

福建农林大学科技创新专项基金项目 KFA17163A

详细信息
    作者简介:

    康智明, 主要研究方向为农田面源污染评价、重金属污染评价。E-mail:kangzhiming56@163.com

    通讯作者:

    王松良, 主要研究方向为农业生态学、农业生态系统管理。E-mail:wsoloedu07@126.com

  • 中图分类号: X820.4

GIS-based pollution risk assessment of nitrogen and phosphorus loss in surface runoff in farmlands in Fujian Province

Funds: 

the Social Science Planning Project of Fujian Province FJ2018B070

the International Sci-tech Collaboration & Communication Project of Fujian Agriculture and Forestry University KXb16017A

the Sci-tech Innovation Fund Project of Fujian Agriculture and Forestry University KFA17163A

More Information
  • 摘要: 为了掌握福建省农田氮磷地表径流流失特征,以福建省的9个地级市为研究边界,通过对其辖区1985—2016年间农田氮、磷化肥施用量的调查,计算农田化肥氮磷的地表径流流失量,并在耦合农田化肥地表径流流失量、降雨和河网密度3个因素的基础上,分析福建省各地级行政区域农田化肥氮磷的污染风险等级,应用地理信息系统(GIS)分析其氮、磷污染的空间分布。结果表明:32年间福建省化肥施用量由4.911×105 t增加到1.239×106t,年均增长3.03%;漳州市氮肥和磷肥的施用强度最大,分别达880.40 kg·hm-2和429.21 kg·hm-2;氮磷地表流失量较高的区域主要集中在漳州市,其氮、磷地表流失强度分别达8.71 kg·hm-2和1.99 kg·hm-2。从氮、磷污染风险等级看,南平市氮、磷肥的流失风险值均最高,分别达63.19%和63.37%,属于高氮磷污染风险区域;厦门市氮、磷肥的流失风险值均最低,分别为0.53%和0.53%,属于低污染风险区域;其他市处于两者之间。可见,漳州市农业发展中应注重氮、磷肥的减量化;南平市则注重对农田氮、磷地表径流流失的风险防范;全省应加大力度发展生态农业,以助力福建省生态文明先行示范区、生态文明试验区的建设。

     

    Abstract: Nitrogen and phosphorus loss in surface runoff from farmlands has been the main cause of water eutrophication.Fujian Province is one of the regions with the highest intensity of fertilizer application per unit area of land in China.The subtropical monsoon climate zone and hilly region with heavy summer and autumn rains on steep hill-slope farmlands in Fujian increase the risk potential for pollution.Thus to analyze current conditions and characteristics of nitrogen and phosphorus loss in surface runoff from farmland in Fujian Province, we selected nine prefectural level cities in Fujian Province as the study areas to estimate the loss of nitrogen and phosphorus in surface runoff in farmlands based on investigated data of fertilizer use in the cities for the period from 1985 to 2016.By integrating the three factors of pollution risk (fertilizer loss, rainfall and drainage intensity), we evaluated nitrogen and phosphorus pollution risk from farmland fertilizer to determine critical areas of primary concern.We used the ArcGIS platform to make thematic maps for visualizing the spatial distribution of contaminated areas by nitrogen and phosphorus.The results showed that fertilizer application in Fujian Province increased during the 30-year period from 4.911×105 t to 1.239×106 t, with an annual average rate of increase of 3.03%.The amount of fertilizer use in Fujian Province was highest (1.243×106 t) in 1999, accounting for 3.01% of total fertilizer use in China.The intensities of nitrogenous and phosphate fertilizer use in Zhangzhou City were largest, with respective values of 880.40 kg·hm-2 and 429.21 kg·hm-2.The high nitrogen and phosphorus surface runoff were concentrated in Zhangzhou City, which were respectively 1.571×106 t and 3.590×105 t, with nitrogen and phosphorus loss intensities of 8.71 kg·hm-2 and 1.99 kg·hm-2.However, pollution risk values of nitrogen and phosphate fertilizer were highest in Nanping City, reaching respectively 63.19% and 63.37%-a high risk of nitrogen and phosphorus pollution.Xiamen City had the lowest risk values, respectively 0.53% and 0.53%.The others were in between and in the following decreasing order:Ningde City (57.22% and 54.48%) > Sanming City (53.34% and 53.34%) > Longyan City (51.38% and 51.20%) > Zhangzhou City (46.73% and 46.73%) > Quanzhou City (45.49% and 40.25%) > Fuzhou City (34.35% and 33.80%) > Putian City (18.59% and 16.93%).By using cluster analysis, these nine cities were divided into three groups-heavy to moderate pollution risk (Sanming City, Longyan City, Ningde City and Nanping City), moderate to light pollution risk (Quanzhou City, Zhangzhou City and Fuzhou City) and low pollution risk (Xiamen City and Putian City).We concluded that Zhangzhou City needed to emphasize on reducing nitrogen and phosphorus fertilizer use in agriculture.Nanping City needed to hammer at risk control of nitrogen and phosphorus loss in farmlands.The others cities needed to strengthen the development of ecological agriculture to facilitate the construction of Fujian Experimented Region of Ecological Civilization and the promotion and optimization of control measures of nitrogen and phosphorus loss in surface runoff.

     

  • 图  1   研究区域与河网地理位置

    Figure  1.   Location of the study area and its river network

    图  2   1985—2016年福建省化肥施用量及粮食、蔬菜产量变化

    Figure  2.   Changes of fertilizer application quantity and grain and vegetable yields in Fujian Province from 1985 to 2016

    图  3   2015年福建省农田氮磷肥施用强度空间分布

    Figure  3.   Spatial distribution of nitrogen and phosphorus fertilizers intensities in Fujian Province in 2015

    图  4   2015年福建省农田氮磷地表径流流失量的空间分布

    Figure  4.   Spatial distribution of amounts of nitrogen and phosphorus surface runoff loss in Fujian Province in 2015

    图  5   2015年福建省农田地表氮磷地表径流流失强度空间分布

    Figure  5.   Spatial distribution of nitrogen and phosphorus fertilizer surface runoff loss intensities in Fujian Province in 2015

    图  6   2015年福建省农田氮磷地表径流流失污染风险值

    Figure  6.   Risk values of surface runoff losses of nitrogen and phosphorus fertilizers in Fujian Province in 2015

    图  7   福建省氮磷地表流失风险等级聚类分析

    Figure  7.   Cluster analysis of risk level of surface runoff loss of nitrogen and phosphorus fertilizers in cities of Fujian Province in 2015

    表  1   研究基础数据的类型及其来源

    Table  1   Data used in the study and their sources

    数据类型Data type 来源Sources 主要数据Main data
    农作物播种面积
    Crop sowing area
    各市级行政区《统计年鉴》
    Statistical Yearbook of the cities
    主要农作物播种面积
    Sowing area of the main crops
    农田氮磷流失系数
    Loss coefficients of nitrogen and phosphorus in farmland
    《全国农业面源污染流失系数手册》
    Handbook of Farmland Non-point Source Pollution Emission Coefficient in China
    地表径流流失系数[15]
    Loss coefficient of surface runoff[15]
    流失系数分区数据
    Partition data of loss coefficient
    中国科学院资源环境科学数据中心
    Data Center for Resource and Environmental Sciences in Chinese Academy of Sciences
    坡度、农区、水旱田[12]
    Slope, agricultural area, and farmland
    降雨数据
    Rainfall
    各市级行政区《统计年鉴》
    Statistical Yearbook of the cities
    年平均降雨量数据
    Annual average rainfall data
    河网数据
    River net
    中国科学院资源环境科学数据中心
    Data Center for Resource and Environmental Sciences in Chinese Academy of Sciences
    河网长度[16]
    River network length[16]
    市级化肥施用数据
    Fertilizer application in city level
    各市级行政区《统计年鉴》
    Statistical Yearbook of the cities
    化肥施用折纯总量
    Total amount of fertilizer application
    省级化肥施用数据
    Fertilizer application in provincial level
    福建省统计年鉴
    Statistical Yearbook of Fujian Province
    化肥施用折纯总量
    Total amount of fertilizer application
    下载: 导出CSV

    表  2   农田氮磷污染风险分级方案

    Table  2   Risk classification scheme for farmland nitrogen and phosphorus pollution

    风险等级
    Risk class

    Lower
    较低
    Low

    Moderate
    较高
    High

    Higher
    风险值
    Risk value (%)
    0~20 20~40 40~60 60~80 80~100
    下载: 导出CSV

    表  3   福建省三大区域的氮磷地表流失风险值

    Table  3   Risk values of nitrogen/phosphorus surface runoff losses in three areas of Fujian Province in 2015

    中度偏高区
    Moderate to high risk area
    中度偏低区
    Moderate to low risk area
    低风险区
    Low risk area
    氮地表径流流失
    Nitrogen surface runoff loss
    0.56±0.05 0.42±0.07 0.10±0.13
    磷地表径流流失
    Phosphorus surface runoff loss
    0.56±0.05 0.40±0.06 0.09±0.12
    下载: 导出CSV
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    SONG T P, ZUO Q, LIU B S, et al. Estimation of spatio-temporal variability and health risks of nitrogen emissions from agricultural non-point source pollution:A case study of the Huaihe River Basin, China[J]. Journal of Agro-Environment Science, 2018, 37(6):1219-1231 http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=nyhjbh201806023

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出版历程
  • 收稿日期:  2018-01-24
  • 录用日期:  2018-07-19
  • 网络出版日期:  2021-05-11
  • 刊出日期:  2018-11-30

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