CAJ | 학술논문

天津滨海平原水库普遍存在的水质咸化问题,以北大港水库为研究对象,采用野外调查和取样分析方法,识别了北大港水库不同季节水质咸化垂直分布规律,同时分析了水库水质咸化机理及其影响因素.研究结果表明:从电导率、氯离子和总溶解性固体( TDS)等代表性咸化指标来看,相对于引黄水,水库水各站点均存在咸化现象,并且出库口水质咸化程度明显高于进水口;不同站点电导率、氯离子浓度和总溶解性固体( TDS)值分别为867.5 LS/cm、0.41 g/L 和1.46 g/L,水体呈弱碱性;北大港水库水质咸化程度有季节性变化,为夏季略高于春季;水库各站点氯离子浓度和 TDS值垂向上均随深度的增加而降低,但不明显;而电导率则随着深度的增加而增加,且变化明显.研究还发现,水库水质咸化受土壤含盐量、温度和混合作用的影响:从各站点水平分布来看,越靠近海岸线土壤含盐量越高,水质咸化现象越严重;温度的升高会影响底泥盐分的释放,温度越高,底泥中Cl-越容易释放;引黄水进入水库后,水库水体垂向发生了混合作用,导致氯离子和TDS 垂向方向变化很小.
천진빈해평원수고보편존재적수질함화문제,이북대항수고위연구대상,채용야외조사화취양분석방법,식별료북대항수고불동계절수질함화수직분포규률,동시분석료수고수질함화궤리급기영향인소.연구결과표명:종전도솔、록리자화총용해성고체( TDS)등대표성함화지표래간,상대우인황수,수고수각참점균존재함화현상,병차출고구수질함화정도명현고우진수구;불동참점전도솔、록리자농도화총용해성고체( TDS)치분별위867.5 LS/cm、0.41 g/L 화1.46 g/L,수체정약감성;북대항수고수질함화정도유계절성변화,위하계략고우춘계;수고각참점록리자농도화 TDS치수향상균수심도적증가이강저,단불명현;이전도솔칙수착심도적증가이증가,차변화명현.연구환발현,수고수질함화수토양함염량、온도화혼합작용적영향:종각참점수평분포래간,월고근해안선토양함염량월고,수질함화현상월엄중;온도적승고회영향저니염분적석방,온도월고,저니중Cl-월용역석방;인황수진입수고후,수고수체수향발생료혼합작용,도치록리자화TDS 수향방향변화흔소.
@@@@The problem of water sanilization existed widely in the coastal reservoirs of Tianjin. In this paper, t he field investiga2 tion and sampling analysis method w ere conducted to determine the vertical distribution of salinization in the Beidagang reservoir in different seasons, and t he mechanism of water salinization and its impact fact ors w ere analyzed. The result s show ed that ( 1) based on the invest igat ion of the representative sanilization indexes, such as electric conductivity, chloride ion, and total dissolved solid ( TDS) , water sanilization is found at each site of the reservoir compared to the w ater diverted from the Yel ow River, and the degree of water sanilizat ion is higher at the outlet of the reservoir than that at t he inlet;( 2) the average level of electric con2 ductivit y, chlorine ion, and T DS of the reservoir water at different sites was 867. 5 LS/cm, 0. 41 g/L, and 1. 46 g/L, respective2 ly, and the reservoir wat er appears to be weak alkaline;( 3) the degree of w ater salinizat ion is higher in the summer than that in the spring in the Beidagang reservoir;( 4) t he contents of chloride ion and T DS decrease w ith the increasing of dept h at each sit e of the reservoir, but the t rend is not apparent;( 5) the elect ric conductivity increases significantly with the increasing of depth;and ( 6) the sanilization of reservoir w ater quality is af ected by the soil salinity, temperature, and the mixing actions. According to the hori2 zontal distribution of salinization at each site of the reservoir, the water salinization was more serious at the locations closer to the coast2 line where soil salinity was higher. The rising temperature can affect the release of salt from the sediment, and the chlorine ion of sedi2 ment was easier to be released w hen the temperature was high. When the w ater diverted from the Yel ow River entered into the reser2 voir, the vertical mixing action occurred, resulting in the insignificant variations of chloride ion and TDS in the vertical direction.