高时空分辨景观塘池生境修复及其灰水足迹汇变研究

发布时间：2018-04-02 05:15

本文选题：富营养化　切入点：叠层生境系统　出处：《湖南大学学报(自然科学版)》2016年12期

【摘要】：将搭载土著生态组成的叠层生境系统(Laminated Habitat System,LHS)嵌入富营养化景观塘池,以发生水华的氮、磷经验阈值为基准,研究了高时空分辨条件下LHS对塘池水质及其灰水足迹"汇"变的作用,并综合分析了实验生境的改善.结果表明:室外静态条件下,嵌入LHS至模拟景观塘池20d后,塘池水质改善明显,TP去除率可达81.01%,TN,NH_4~+-N,NO_3~--N去除率分别为77.10%,88.82%,84.12%;CODCr的处理率达67.51%;Chl.a质量浓度降至0.98μg·L~(-1);Chl.a质量浓度及浊度降至了初始值的10%以下;模拟景观塘池灰水足迹降至初始态的22.9%.LHS利于景观塘池水质和生态系统改善,益于藻型塘池向草型塘池转变及塘池灰水足迹"汇"增.本研究提供了灰水足迹理论指导下的景观塘池生态修复新思路.
[Abstract]:Laminated Habitat system (LHS), a laminated Habitat system, was embedded into the eutrophication landscape pond, and the empirical threshold of the occurrence of Shui Hua's nitrogen and phosphorus was taken as the benchmark. The effect of LHS on pond water quality and its ash water footprint "sink" under high space-time resolution was studied, and the improvement of experimental habitat was comprehensively analyzed. The results showed that under outdoor static conditions, LHS was embedded into the simulated landscape pond for 20 days. The removal rate of TP can reach 81.01%. The removal rate of NH _ 4 ~ -N no _ 3-N is 77.10 ~ -N, respectively. The removal rate of COD _ (Cr) is 87.51%. The mass concentration of Chl.a decreases to 0.98 渭 g 路L ~ (-1) Chl.a and the turbidity decreases to below 10% of the initial value. 22.9%.LHS, which simulates that the footprint of grey water in landscape ponds decreases to the initial state, is beneficial to the improvement of water quality and ecosystem of landscape ponds. It is beneficial to the transformation from algal pond to grass pond and the increase of ash water footprint. This study provides a new idea for ecological restoration of landscape pond under the guidance of ash water footprint theory.
【作者单位】：上海海事大学经济管理学院(交通运输规划与管理国家重点培育学科);湖南大学环境科学与工程学院;环境生物与控制教育部重点实验室(湖南大学);
【基金】：中国博士后科学基金资助项目(2016M590348) 国家自然科学基金资助项目(41301154,41271332)~~
【分类号】：X52

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