基于InVEST模型的海南岛氮磷营养物负荷的风险评估  

Risk Assessment of Nitrogen and Phosphorus Loads in Hainan Island Based on InVEST Model

作　　者：吴哲[1,2,3] 陈歆[2,3] 刘贝贝[2,3] 初金凤[4] 彭黎旭[2,3] 

机构地区：[1]海南大学环境与植物保护学院,海南海口570228 [2]中国热带农业科学院环境影响评价与风险分析研究中心,海南海口571101 [3]中国热带农业科学院环境与植物保护研究所,海南海口571101 [4]河北工程大学城市建设学院,河北邯郸056038

出　　处：《热带作物学报》2013年第9期1791-1797,共7页Chinese Journal of Tropical Crops

基　　金：中央级公益性科研院所基本科研业务费专项(No.1630042012008)

摘　　要：对于面源污染的防治,首要任务是量化氮磷营养物的负荷。应用InVEST模型中的水质净化模块,模拟海南岛氮磷营养物的输出负荷,并根据富营养化含量指标表划分氮磷负荷的风险区域。结果表明:海南岛水质状况总体良好,大部分区域的水质达到或优于国家地表水Ⅲ类标准,但是部分区域磷的输出负荷偏高,处于风险水区。以氮为限值的贫营养化水区、贫-中营养化水区、中营养化水区和中-富营养化水区分别占总面积的21.42%、49.98%、11.58%、17.02%。以磷为限值的贫-中营养化水区、中营养化水区、中-富营养化水区和风险水区分别占1.48%、35.40%、47.49%、15.63%。Aiming at the control of non-point pollution, the quantification of nitrogen and phosphorus nutrient loads is the primary task. In this study, the water purification module of INVEST （The Integrated Valuation of Ecosystem Services and Tradeoffs Tool） model was applied to stimulate the nitrogen and phosphorus loads and 5 classes based on the index of eutrophication in Hainan Island were grouped. The results showed that water quality in Hainan Island was in good condition, the nitrogen and phosphorus density was lower than the class IU of surface water environmental quality standard in most areas, but some regions were at risk in phosphorus loads. Olipotrophication areas, olipotrophication-mesotrophication areas, mesotrophication areas and mesotrophication- eutrophication areas based on the total nitrogen content separately covered 21.42%, 49.98%, 11.58% and 17.02% area of Hainan Island. And olipotrophieation-mesotrophication areas, mesotrophication areas, mesotrophieation- eutrophication areas and risk areas based on the total phosphorus content separately covered 1.48%, 35.40%, 47.49% and 15.63%.

关 键 词：InVEST模型 海南岛 氮磷负荷 风险评估 

分 类 号：X824[环境科学与工程—环境工程]