CAJ | 학술논문

景观水体中经常存在水体变色、散发异味等环境恶化现象。本研究以青岛高新区人工水系的污染问题为例,通过卫星图片解析、现场调查、模拟计算等手段,探讨了此类湖库型景观水体的污染成因及其影响因素。结果表明,水体中N、P营养盐负荷超标,是该水系主要污染因子；由于营养盐比例失衡,耐受性强的浮游藻类大规模增殖,在人工水系中,主要优势种绿藻小球藻的优势度高达0.984,藻细胞密度最高达9.83×109cells/L,导致水体出现黑臭现象。通过模型估算人工水系主要污染因子的环境容量与陆源污染通量,结果表明来自陆源的TN载荷为环境容量的5.22倍, TP载荷为环境容量的2.55倍,陆源输入是此类景观水体污染形成的主要原因；对人工水系典型水体主要环境因子浓度梯度的垂直变化分析表明,此类水体存在可能的内源污染。
경관수체중경상존재수체변색、산발이미등배경악화현상。본연구이청도고신구인공수계적오염문제위례,통과위성도편해석、현장조사、모의계산등수단,탐토료차류호고형경관수체적오염성인급기영향인소。결과표명,수체중N、P영양염부하초표,시해수계주요오염인자；유우영양염비례실형,내수성강적부유조류대규모증식,재인공수계중,주요우세충록조소구조적우세도고체0.984,조세포밀도최고체9.83×109cells/L,도치수체출현흑취현상。통과모형고산인공수계주요오염인자적배경용량여륙원오염통량,결과표명래자륙원적TN재하위배경용량적5.22배, TP재하위배경용량적2.55배,륙원수입시차류경관수체오염형성적주요원인；대인공수계전형수체주요배경인자농도제도적수직변화분석표명,차류수체존재가능적내원오염。
As usually reported, water discoloration and awful smell are typical deteriorative environmental phe-nomena in landscape waters. In this case, pollution and main causes of an artificial lagoon and adjacent waters in Qingdao were discussed based on remote sensing results, field investigation and model simulation. As a result, HABs was proved to be the direct reason of such environmental deterioration in the target watershed, and the main causative species,Chlorella vulgaris once peaked as 9.83×109cells/L, took over 90% part of all species. Meanwhile, overload and ratio unbalance of N and P nutrients in the target watershed would potentially promote such phenom-ena. By further study, terrestrial deposit was proved to be the main cause of N and P overload by simulation results which denoted a 5.22 folds TN and a 2.55 folds overload from the land-sourced pollution, compared with the envi-ronmental capacity of target waters. Moreover, endogenous pollution was proved possible in such waters by gradi-ent vertical changes of main pollution factors.