摘要
研究城市景观水体的表观污染与悬浮颗粒物粒度分布之间的内在联系及影响因素,可为景观水体的表观污染防治提供参考。以成都市3个特征明显的小型封闭式景观水体为研究对象,对其进行水质监测,利用修正的综合营养状态指数法对其进行水质评价;分析水体的悬浮颗粒物浓度及其粒度分布,发现其颗粒物粒度分布特征相似,主要为4个组分,分别为组分Ⅰ(0.45~3μm)、组分Ⅱ(3~30μm)、组分Ⅲ(30~120μm)和组分Ⅳ(>120μm);不同颜色类型城市景观水体浊度主要与组分Ⅰ(粒级0.45~3μm)、组分Ⅱ、组分Ⅳ体积分数表现出显著相关性,3种景观水体的色度其关键影响粒级为组分Ⅳ。溶解态物质引起的城市景观水体表观污染贡献值很小。
Studying the internal relationship between the apparent pollution of urban landscape water bodies and the particle size distribution of suspended particulates and the influencing factors can provide a reference for the prevention and control of apparent pollution of landscape water bodies.Taking three small enclosed landscape water bodies with obvious characteristics in Chengdu as the research object,the water quality was monitored and evaluated by the modified comprehensive nutritional state index method.The suspended particulate matter concentration and particle size distribution of the water body were analyzed.It was found that the particle size distribution characteristics of the particles are similar.There are four main components:component Ⅰ(0.45~3μm),component Ⅱ(3~30μm),componentⅢ(30~120μm),and component Ⅳ(>120μm).The turbidity of urban landscape water bodies of different color types mainly shows significant correlation with the volume fractions of componentⅠ(grain size 0.45~3μm),component Ⅱ,and component Ⅳ.The contribution of apparent pollution of urban landscape water caused by dissolved substances is inconspicuous.
作者
胡思骙
向鹏
任晨媛
王庆国
梁英
HU Si-kui;XIANG Peng;REN Chen-yuan;WANG Qing-guo;LIANG Ying(The College of Architecture&Environment,Sichuan University,Chengdu 610065,China;Chengdu Wetland Protection Center,Chengdu 610072,China;Chengdu Research Base of Giant Panda Breeding,Chengdu 610081,China)
出处
《四川环境》
2020年第6期108-114,共7页
Sichuan Environment
基金
成都大熊猫繁育研究基地开放课题(CPB2017-02)
四川省科技计划项目(2018SZ0292)。
关键词
小型景观水体
表观污染
水质评价
悬浮颗粒物
粒径分布
Small landscape water
apparent pollution
water quality evaluation
suspended particulate matter
particle size distribution
