The relationships between odors and environmental factors at bloom and non-bloom area in Lake Taihu, China
The relationships between odors and environmental factors at bloom and non-bloom area in Lake Taihu, China
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太湖水华区和非水华区气味与环境因素的关系
DOI：
10.1016/j.chemosphere.2018.11.121
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发表时间：
2018
期刊：
影响因子：
8.8
通讯作者：
Chen Jun
中科院分区：
文献类型：
--
作者：
Deng Xuwei;Qi Min;Ren Ren;Liu Jiarui;Sun Xiaoxue;Xie Ping;Chen Jun
太湖最近发生了味觉和气味（T&O）事件。为了寻找对T&O化合物影响较大的环境因素，为预防T&O问题的发生提供理论依据，对溶解态和颗粒结合态的T&O化合物进行了冗余分析（RDA）。整个湖泊被划分为开花区和非开花区。结果表明，环境因子（包括生物和非生物因子）对太湖T&O化合物的变化有很大的贡献。微囊藻、颤藻和叶绿素a是太湖水华区的关键生物因子，微囊藻对水华区的贡献较大，与太湖水体中颗粒态的致臭物质有密切关系，而颤藻对非水华区的致臭物质有较大的绝对贡献。叶绿素a对水华区水体中的嗅味物质影响很大，与整个湖泊的颗粒结合态组分有显著的相关性。溶解氧和水温是主要的非生物因子，贡献率较大。
Lake Taihu has been experiencing taste and odor (T&O) events recently. And for the purpose of seeking the environmental factors having great influences on T&O compounds and supplying theory information for preventing the occurrence of T&O problems, Redundance analysis (RDA) was conducted for the dissolved and particle-bound forms of T&O compounds. And the whole lake was divided into the blooming and non-blooming areas. Results indicated that environmental factors, including biotic and abiotic factors, made great contributions to the variation of T&O compounds in Lake Taihu. The key biotic factors includedMicrocystis,Oscillatoriaand chlorophyll-a.Microcystismade great contribution of these compounds in the blooming area and had close relationship with those particulate forms of odorants in Taihu.Oscillatoriamade great and absolute contribution to odorants in the non-blooming area. Chlorophyll-a influenced greatly the odorants in the blooming area and had significant relationship with the particle-bound fractions in the whole lake. Dissolved oxygen and water temperature were the dominant abiotic factors with large contributions.