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引用本文:赫斌,李哲,冯婧,肖艳,郭劲松.三峡澎溪河高阳平湖高水位期间磷-藻生态模型研究.湖泊科学,2016,28(6):1244-1255. DOI:10.18307/2016.0610
HE Bin,LI Zhe,FENG Jing,XIAO Yan,GUO Jinsong.Study on the phosphorus-algal ecological modelling during high water level period in Lake Gaoyang of Pengxi River, Three Gorges Reservoir. J. Lake Sci.2016,28(6):1244-1255. DOI:10.18307/2016.0610
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三峡澎溪河高阳平湖高水位期间磷-藻生态模型研究
赫斌1,2, 李哲3,1,4, 冯婧1,2, 肖艳3,1, 郭劲松3,1
1.中国科学院水库水环境重点实验室, 重庆 400714;2.重庆大学城市建设与环境工程学院, 重庆 400045;3.中国科学院重庆绿色智能技术研究院, 重庆 400714;4.中国长江三峡集团公司, 北京 100038
摘要:
通过在前期建立的总磷模型基础上建立磷-藻模型.从正磷酸盐所代表的无机磷和藻类生物量所代表的有机磷入手,分析蓄水期所累积的磷在高水位时期各种形态转化和循环机制,以期从定性和定量两方面说明冬季末水华暴发所消耗磷的来源.研究表明:高水位蓄水期、稳定期和水华期这3个阶段中各磷库磷通量各不相同.淹没消落带磷释放是该时期高阳平湖溶解性正磷酸盐的主要来源(占总输入通量的72.69%),其释放量与被淹没消落带面积和消落带水土界面磷交换速率有关,淹没消落带面积越多,磷交换速率越高,磷释放量越大,对整个磷循环的贡献越大.但水华期间藻磷的合成率最大仅为14.4%,藻类对冬季高水位期间所积累磷的利用量依然相对较低.
关键词:  三峡库区  澎溪河  高阳平湖  磷-藻模型  磷循环  形态转化
DOI:10.18307/2016.0610
分类号:
基金项目:国家自然科学基金项目(51309220,51679226)和重庆市基础科学和前沿技术研究专项(cstc2015jcyjBX0006)联合资助.
Study on the phosphorus-algal ecological modelling during high water level period in Lake Gaoyang of Pengxi River, Three Gorges Reservoir
HE Bin1,2, LI Zhe3,1,4, FENG Jing1,2, XIAO Yan3,1, GUO Jinsong3,1
1.Key Laboratory of Water Environment Reservoir, Chinese Academy of Sciences, Chongqing 400714, P. R. China;2.Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, P. R. China;3.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China;4.China Three Gorges Corporation, Beijing 100038, P. R. China
Abstract:
The article set up model of phosphorus-algae on the basis of establishing total phosphorus model in early period. From the start of inorganic salts represented by orthophosphate and organophosphorus represented by algal biomass, it analyses at high water level stages, kinds of form transformation and cycle mechanism of accumulated phosphorus due to impounding stage in order to explain the source of the phosphorus which is consumed by the outbreak of water bloom at the end of winter from fixed quantity and fixed nature two parts. The research shows that the total phosphorus of phosphorus pool in the three phases of impounding stage, stable stage and algae bloom stages at high water level in Lake Gaoyang is totally different. Water-level-fluctuating zone with phosphorus release is a major source of solubility reactive phosphorus at high water level in Lake Gaoyang (72.69% of the total input flux), which is related to the area of water-level-fluctuating zone and the phosphorus exchange rate in the soil and water interface of water-level-fluctuating zone. More flooded area, the higher exchange rate of phosphorus, more phosphorus release, the greater contribution of the phosphorus cycle. And the maximum synthetic ratio of phosphorus-algae was only 14.4%. However, the amount of utilized phosphorus at algal bloom stage was small.
Key words:  Three Gorges Reservoir  Pengxi River  Lake Gaoyang  phosphorus-algal model  phosphorus cycle  morphological transformation
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