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.
The Laminated Habitat System （LHS） composed of indigenous species was designed and em- bedded into a Small Experimental Landscape Pond （SELP）. The variation of water quality, eco-habitat and the sink of grey water footprint （WFgrey sink） for the SELP at high spatiotemporal resolution were meas- ured statically outdoor for 20 days. The results showed that the removal efficiencies of TP, TN, NH4 ＋-N,and NO3--N reached 81.01%, 77.1%, 88.82% and 84.12%, respectively, while the removal efficiency of CODcr reached 67.51%, and the concentration of Chl. a decreased to 0.98μg · L^-1. The turbidity reduced to about 10% of its original level, while 22.9% for the sink of grey water footprint. The LHS acted excel- lently in improving water quality and rehabilitating the eco-habitat, and promoted the eco-succession of SELP from algal-dominated to macrophyte-dominated. Moreover, this study provided a new idea for Land- scape Pond ecology maintenance in the light of Grey Water Footprint theory.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第12期118-127,共10页
Journal of Hunan University:Natural Sciences
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)~~
关键词
富营养化
叠层生境系统
灰水足迹
生态系统
eutrophication
laminated habitat system
grey water footprint
ecosystem
