Evaluation on Current Situation of Landscape Water Eutrophication and Discussion of Its Preventive Solutions in Zhengzhou City of China

The evaluation of landscape water eutrophication in Zhengzhou City could provide a scientific basis for the prevention of eutrophication.By taking landscape lakes in People Park and Zijing Mountain Park as the research objects,and selecting seven sampling spots,GPS had been conducted every week from March to April of 2010.By making use of TLI and TSIM,the landscape water eutrophication of the two parks had been evaluated.The research results showed that the average value of TLI of sampling waters in the two parks was 66.80 and 64.74;those of TSIM was 58.61 and 59.94,respectively.It could be known that landscape water eutrophication of the two parks was moderate and should be controlled and treated in time.Finally,the paper had pointed out that it should purify waters,reduce endogenous nutritions,and control exogenous nutritions by cultivating plants.

Evaluation of and Control Schemes for Current Eutrophication of Land-scape Lakes in Kaifeng City,Henan Province

[Objective] Current eutrophication of landscape lakes in Kaifeng City was evaluated to provide scientific support for the prevention and control of landscape water eutrophication.[Method] The comprehensive trophic level index (TLI) and the modified Carlson's trophic state index (TSIM) were applied. [Result] TLI of water in Longting Lake and Baogong Lake was obtained as 73.84 and 70.23,TSIM was 66.51 and 65.23,respectively.[Conclusion] Water in both lakes was suffering from serious eutrophication,and urgent measures should be taken to control the eutrophication.

郑州市公园景观河流富营养化现状评价及防治方案探讨

评价郑州市景观河流的富营养化现状可为科学防治景观水体富营养化提供科学依据。选取人民公园和紫荆山公园的景观湖为研究对象,供选定7个采样点,于2010年3～4月每周进行GPS定位采样。选取综合营养状态指数和修正的卡尔森营养状态指数法评价郑州市2座公园景观水体营养化情况。研究结果表明,人民公园和紫荆山公园取样点的水体TLI均值分别为66.80、64.74,TSIM为58.615,9.94。由此可知,2座公园景观水体富营养化程度均为中度富营养化,应及时控制与治理。对此,笔者提出利用植物净化水体,减少内源营养,控制外源营养的水体富营养化防治方法。

住宅小区大型景观水体水质情况调查与评价分析

以郑州市某住宅小区内大型景观水体为研究对象,依据《地表水环境质量标准》(GB3838-2002)和《景观娱乐用水水质标准》(GB12941-91),通过5个监测点位的7项主要评价指标的监测数据变化,评价景观水体的水质状况。应用综合营养状态指数法评价景观水体营养化程度,结果表明,5个监测点位均呈现中营养化。通过镜检分析判定了景观水体中的藻类类别。在景观水体富营养化成因分析的基础上,建议通过提升水体自净能力、增设内回流水动力设施、完善水生态系统,以改善景观水体水质并减少其富营养化程度。