| 摘要: |
| 为了控制云南省高原湖泊的富营养化,切实改善湖库的水环境质量,本文在通过调查统计云南省辖区内的典型湖库和国内外相关指标分析评价研究的基础上,提出了云南省重点保护湖库水中透明度、叶绿素a环境控制指标的标准限值:Ⅰ类5．0m、Ⅱ类2．5m、Ⅲ类为1．0m、Ⅳ类和Ⅴ类均为0．5m;叶绿素a为:Ⅰ类2μg/L、Ⅱ类10μg/L、Ⅲ类20μg/L、Ⅳ类40μg/L、Ⅴ类60μg/L.这两项控制指标能与国家标准有较好的衔接,可作为云南省执行GB3838-2002《地面水环境质量标准》时重点湖库的地方补充标准限值． |
| 关键词: 湖泊 透明度 叶绿素a 标准 |
| DOI：10.18307/2006.0113 |
| 分类号: |
| 基金项目: |
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| Suggestions on the SD and chl.a control standards in major lakes of Yunnan Province |
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WANG Liqian, ZHANG Yuxia
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Yunnan Environmnental Monitoring Center, Kunming 650034, P. R. China
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| Abstract: |
| Lakes in Yunnan Plateau have undertaken tremendous change due to human activities, especially since 1980s. For the sake of the environmental protection, especially eutrophication control on the main lakes in Yunnan Plateau, the thresholds of different indexes such as transparency and chl. a concentration in lakes are suggested, two of which are not explicitly included in national water quality standards (GB3838-2002) of China. The suggestions offered are obtained based upon document analysis on relevant standards from local and abroad and investigations from typical lake regime in Yunnan Province. For water transparency, the values could be 5.0 m for Grade I, 2.5 m, 1.0 m and 0.5 m for Grade II, HI, IV-V (according to GB3838-2002) respectively. For chl. a, they could be 2 μg/L, 10μg/L,20μg/L,40μg/L and 60μg/L for Grade I, II, M, IV, V respectively. The thresholds suggested could be a substantial implementation of national standard (GB3838-2002) for local management guidance. |
| Key words: Lakes SD chl.a standards |
