台风事件对闽江口上游营养盐和有机碳含量及通量的影响

发布时间：2018-04-22 10:00

本文选题：海洋环境科学 + 台风　；参考：《应用海洋学学报》2016年01期

【摘要】：借助于2013年夏季两次台风(1307号"苏力"与1312号"潭美")过境前后闽江口现场采样观测,研究了台风过境对闽江口上游营养盐、有机碳及悬浮颗粒物(TSM)等物质含量的影响.调查发现台风登陆时暴雨带来的陆源物质输入对闽江营养盐、有机碳及TSM等物质含量的增加有重要的作用."苏力"登陆当天,采样点溶解无机氮(DIN)、活性磷酸盐(PO4-P)以及TSM与前1天相比含量分别增加了7.2%、18.2%及409.3%,而"潭美"登陆时DIN、PO4-P以及TSM与台风登陆前1天相比分别增加了21.5%、65.4%及98.6%.另外,"潭美"登陆当天,溶解有机碳(DOC)与颗粒有机碳(POC)与前1天相比含量分别增加了169.3%及138.3%.台风登陆过后,陆源物质输入量逐渐减少,采样点物质与台风登陆当天相比开始降低.台风事件快速改变了闽江口上游物质输送通量,这对河口近岸水体环境及生态系统的稳定性具有重要的影响.
[Abstract]:The effects of typhoon transit on nutrients, organic carbon and suspended particulate matter (TSM) in the upper reaches of Minjiang River were studied by means of sampling and observation of Minjiang Estuary before and after the transit of Typhoon No. 1307 and No. 1312 in the summer of 2013. It is found that the land-based material input caused by heavy rain during the landfall of typhoon plays an important role in increasing the contents of nutrients, organic carbon and TSM in the Minjiang River. " On the day of "Su Li" landing, the contents of dissolved inorganic nitrogen (DINN), active phosphate (PO4-P) and TSM increased by 7.2% and 409.3%, respectively, compared with the previous day, while the contents of DINDPO4-P and TSM increased 21.55.4% and 98.66.00%, respectively, when "Tam Mei" landed on the first day of landfall. In addition, the contents of dissolved organic carbon (DOC) and particulate organic carbon (POC) increased by 169.3% and 138.3% respectively on the day of Tam Mei landing compared with the previous day. After the typhoon landfall, the input amount of land-based material gradually decreased, and the sample point material began to decrease compared with the day of typhoon landing. The Typhoon event has changed the mass transport flux in the upper reaches of the Minjiang River Estuary, which has an important effect on the stability of the estuarine nearshore water environment and ecosystem.
【作者单位】：华东师范大学河口海岸学国家重点实验室;
【基金】：科技部全球变化重大科学研究计划资助项目(2010CB951203) 上海市科委知识创新资助项目(10JC1404400) 国家自然科学基金资助项目(41106098) 河口海岸学国家重点实验室自主经费资助项目(2010RCDW14)
【分类号】：P734;P444

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