McIsaac G F, David M B, Gertner G Z, Goolsby D A
Department of Natural Resources and Environmental Sciences, University of Illinois, Turner Hall, 1102 South Goodwin Avenue, Urbana, Illinois 61801, USA.
Nature. 2001 Nov 8;414(6860):166-7. doi: 10.1038/35102672.
Increased delivery of biologically available nitrogen to estuaries and coastal oceans in recent decades has been linked to eutrophication and seasonal hypoxia in the northern Gulf of Mexico and elsewhere. We have developed a model that accounts for 95% of annual variation in delivery of nitrate to the Gulf of Mexico by the Mississippi River in 1960-98. Retrospective analysis indicates that this nitrate flux could have been reduced by 33% if the use of nitrogen-containing fertilizer in the Mississippi River basin had been cut by 12%.
近几十年来，河口和沿海水域生物可利用氮输送量的增加与墨西哥湾北部及其他地区的富营养化和季节性缺氧有关。我们开发了一个模型，该模型能够解释1960年至1998年期间密西西比河向墨西哥湾输送硝酸盐年变化量的95%。回顾性分析表明，如果密西西比河流域的含氮肥料使用量减少12%，那么这种硝酸盐通量可能会减少33%。
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