汉江下游突发“水华”的调查研究  被引量:57

The Investigation of ‘Water Bloom’ in the Downstream of the Han River

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作  者:卢大远[1] 刘培刚[1] 范天俞 彭辉[1] 张政科[1] 

机构地区:[1]武汉市环境监测中心站,湖北武汉430015

出  处:《环境科学研究》2000年第2期28-31,共4页Research of Environmental Sciences

摘  要:对1992 年春汉江下游水体暴发“水华”进行了调查研究,对“水华”的特征,产生的原因以及对策、建议等进行了分析、探讨。结果表明,其直接原因是以小环藻为主的硅藻的急剧增殖( 硅藻密度达107 个/L 以上) 造成的。通过对汉江“水华”发生时某些水文参数如水温、水流量、水流速等和某些水质参数如pH、DO、色度、CODMn 等发生的相应变化的研究,提出汉江“水华”的“敏感因子”( 或“指示因子”) 及其“警界值”的概念和对汉江“水华”预警预报的设想。The first outbreak of ‘water bloom' in the downstream of the Han River during the spring of 1992 was investigated, and the characteristics and causes of this phenomenon and the possible countermeasures and control suggestions were analyzed and discussed. It was found that the rapid proliferation of diatom (with density of more than 10 7/L), mainly the cyclotella meneghiniana, is the basic characteristic as well as the direct cause of the ‘water bloom'. By examining the relative changes of hydrological factors, such as water temperature, water flow and flow velocity, and water quality factors, such as pH, DO, chromaticity and COD Mn , the concepts of ‘sensitivity factor' (or indicating factor) and ‘precaution value' for the Han River were proposed.

关 键 词:汉江 硅藻增殖 河流 富营养化 水体污染 调查 

分 类 号:X522.08[环境科学与工程—环境工程]

 

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