摘要
通过现场实测,获取了南水北调中线工程北京段团城湖明渠区域沉积速率变化情况,结果表明,不同时间段的沉积速率差异明显,平均沉积速率介于0.001~0.012 m^(3)/(m^(2)·d);共检测出74种着生藻类,其中硅藻门(Bacillariophyta)49种,占比达到66.2%;藻类密度中位数最高达到85万个/cm^(2),生物量中位数为900~950μg/cm^(2)。团城湖明渠为着生藻类的生长与沉积提供了适宜的环境条件,区域淤积现象主要由硅藻门的藻泥混合物沉积造成。
The change of sedimentation rate in Tuancheng Lake nullahs of the Beijing Section of the South-to-North Water Diversion Middle Line was obtained by field measurement.The results showed that the sedimentation rate varied significantly at different time,with the average from 0.001 to 0.012 m^(3)/(m^(2)·d).A total of 74 species of engrafted algae were detected,including 49 species of Bacillariophyta,accounting for 66.2%.The median density was up to 850000 cells/cm^(2),and the median biomass was 900-950μg/cm^(2).The nullahs of Tuancheng Lake provided suitable environmental conditions for the growth and deposition of algae.The phenomenon of regional siltation was mainly caused by the deposition of algal mud mixture from Bacillariophyta.
作者
高赛
毕可跃
李垒
张文智
王永康
李兆欣
GAO Sai;BI Keyue;LI Lei;ZHANG Wenzhi;WANG Yongkang;LI Zhaoxin(Beijing South-North Water Diversion Main Line Management Office,Beijing 100195;Beijing Key Laboratory of Water Environmental and Ecological Technology for River Basins,Beijing Water Science and Technology Institute,Beijing 100048)
出处
《环境污染与防治》
北大核心
2025年第4期95-100,I0005,I0006,共8页
Environmental Pollution & Control
基金
北京市科技计划课题(No.Z221100005222013)。
关键词
南水北调
沉积速率
着生藻类
环境因子
形貌特征
South-to-North Water Diversion
sedimentation rate
engrafted algae
environmental factors
morphological characteristics
