| 摘要: |
| 湿地植物作为湿地的重要组成部分，在水质净化、景观构建中具有重要的作用。在广东省东莞国家城市湿地公园，按植物覆盖度层级（覆盖度分别为0，30%，40%，50%，80%及90%）划分6个样区，采用单因子指数法和综合因子指数法对湿地植物覆盖度与水质之间的关系进行评价。结果表明：（1）单因子指数法分析显示，水质指标值随植被覆盖度不同而发生变化；（2）植被覆盖度为50%时，总氮与NO3-浓度值最低，植被覆盖度为90%时总氮值达到最大；（3）高锰酸盐指数、总磷等指标随覆盖度增加变化不明显；（4）综合因子指数法显示，当湿地植物覆盖度维持在40%时，湿地水质相对保持较好 |
| 关键词: 湿地植物覆盖度 单因子指数法 综合因子指数法 水质 |
| DOI： |
| 分类号:Q948 |
| 基金项目:东莞市高等院校科研机构科技计划项目“基于产业链延伸的湿地植物生态管理和利用研究”（2012108102034） |
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| Study on the Relationship between Coverage of Wetland Vegetation and Purification of Water |
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Liao Lingjuan,Huang Na and Wu Pengju
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Dongguan Ecology-Industrial Park Management Committee,The Development and Promotion Center of Circular Economy,Dongguan Eco-Industrial Park,Dongguan
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| Abstract: |
| As an important component, wetland plant play a significant role on water purification and landscape construction. This paper studied the relationship between coverage of wetland vegetation and water purification. In the study, there were six sample area based on the coverage of wetland vegetation (0, 30%, 40%, 50%, 80%, 90%). Adopting single factor index method and comprehensive factor index method, the results showed that the water quality was different with varied coverage of plant, some single factor water quality index changed with the different plant coverage. When the plant coverage was 50%, TN and NO3- value of water quality was lowest. When the plant coverage increased to 90%, the TN was highest. COD Mn and TP didn′t change significantly as the plant coverage changed. By comprehensive factor index method, when plant coverage was 40%, the water quality was best. |
| Key words: coverage of wetland vegetation single factor index method comprehensive factor index method water quality |
