北半球湖泊营养状态的地理格局及其社会经济制约因素

发布时间：2018-05-26 09:32

本文选题：湖泊 + 营养状态指数　；参考：《地理与地理信息科学》2017年01期

【摘要】：该文收集了1990-2014年已公开发表的学术论文或数据库中的北半球1 054个湖泊水体总磷、总氮和叶绿素a浓度数据,同时结合湖泊地理坐标、区域人均国内生产总值和人口密度资料,探讨了北半球湖泊营养状态的地理格局及其社会经济制约因素。结果表明:1)湖泊的营养状态指数(Trophic State Index,TSI)与湖泊纬度和海拔均呈显著负相关,反映了在自然状态下,不同气候带营养物质侵蚀输入量的变化。2)20个国家或地区的湖泊TSI均值与人口密度呈显著正相关,表明人口密度高的国家或地区湖泊营养水平相对较高。3)TSI均值随人均GDP增长呈倒U形,符合环境库兹涅茨曲线特征,区域人均GDP 5 000~10 000美元是富营养化减缓的可能阈值范围,超过该阈值后区域湖泊营养水平随经济增长而降低。
[Abstract]:The data of total phosphorus, total nitrogen and chlorophyll a concentrations in 1,054 lakes in the Northern Hemisphere from 1990 to 2014 have been collected from published academic papers or databases from 1990 to 2014, and combined with the geographical coordinates of lakes, regional per capita GDP and population density data. The geographical pattern and social and economic constraints of the nutrient status of lakes in the Northern Hemisphere are discussed. The results showed that the nutrient state index (Trophic State index) of the lake was significantly negatively correlated with the latitude and elevation of the lake, which reflected the natural state of the lake. The mean value of TSI in lakes of 20 countries or regions was positively correlated with population density. The results show that the nutrient level of lakes with high population density is relatively high. The average value of TSI is inverted U shape with the increase of GDP per capita, which accords with the characteristics of environmental Kuznets curve. The regional average value of per capita GDP of $5 000 ~ 10 000 is the possible threshold range of eutrophication slowing. The nutrient level of regional lakes decreased with economic growth after the threshold was exceeded.
【作者单位】：中国地质大学(武汉)地球科学学院地理系;中南民族大学资源与环境学院;
【基金】：国家自然科学基金项目(41402307、41202248)
【分类号】：X524

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