Variations of sediment organic phosphorus and organic carbon during the outbreak and decline of algal blooms in Lake Taihu,China

作     者：Jiehua Wang Xiuling Bai Wenchao Li Pingping Zhang Mengdi Zhang Haoran Wang Yingge Bai Jiehua Wang;Xiuling Bai;Wenchao Li;Pingping Zhang;Mengdi Zhang;Haoran Wang;Yingge Bai

作者机构：College of Geography and Environmental ScienceHenan UniversityKaifeng 475004China Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions(Henan University)Ministry of EducationKaifeng 475004China National Demonstration Center for Environment and PlanningHenan UniversityKaifeng 475004China Surrey International InstituteDongbei University of Finance and EconomicsDalian 116000China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2024年第139卷第5期

页      面：34-45页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0815[工学-水利工程] 

基　　金：jointly sponsored by the National Natural Science Foundation of China(No.41371450) the Natural Science Foundation of Henan(No.222300420418) the Postgraduate Cultivating Innovation and Quality Improvement Action Plan of Henan University(No.SYLYC2022015) 

主　　题：Algal blooms Organic phosphorus Organic carbon Sediment ^(31)P NMR Lake Taihu 

摘      要：In this study,sediment organic phosphorus(OP)and organic carbon(OC)in Lake Taihu,China,as well as their relationships,were analyzed during the outbreak and decline of algal blooms(ABs)over a five-month field *** results showed synchronous temporal changes in the sediment OP and OC contents with the development of *** addition,there was a significant positive correlation between the sediment OP and OC(p0.01),suggesting simultaneous deposition and consumption during the ABs *** sediment OP and OC contents decreased significantly at the early and last stages of the ABs outbreak and increased at the peak of the ABs outbreak and during the ABs *** temporal variation patterns suggest that the sediment OC and OP contents did not consistently increase during the ABs outbreak,even though algae are an important source of organic matter in *** depletion or enrichment of OC and OP in sediments may also depend on the scale of the ABs *** obtained results revealed significant differences in the sediment OC and OP contents between the months(p0.05).In addition,OP in the sediments was dominated by orthophosphate diester(phospholipids and DNA-P)and orthophosphate monoester during the ABs outbreak and decline,*** active OC contents and proportions in the sediments in the ABs outbreak were significantly lower than those observed in the ABs decline period,demonstrating the significant impacts of the ABs outbreak and decline on the sediment OC and OP in Lake Taihu.