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贵州高原三板溪水库富营养化时空特征与影响因素

张垒1,李秋华1**,吴迪1,周黔兰2,黄国佳1,欧腾1   

  1. (1贵州师范大学, 贵州省山地环境信息系统和生态环境保护重点实验室, 贵阳 550001; 2贵州省环境监测中心站, 贵阳 550002)
  • 出版日期:2015-02-07 发布日期:2015-02-07

Spatial-temporal characteristics and affecting factors of eutrophication in Sanbanxi Reservoir, Guizhou Province.

ZHANG Lei1, LI Qiu-hua1**, WU Di1, ZHOU Qian-lan2, HUANG Guo-jia1, OU Teng1   

  1. (1Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001, China; 2Environmental Monitoring Center of Guizhou Province, Guiyang 550002, China)
  • Online:2015-02-07 Published:2015-02-07

摘要:

为揭示大型深水水库——三板溪水库富营养化的时空特征及影响因素,于2012年11月(枯水期),2013年4月(平水期)和7月(丰水期)对其水体的富营养化指标和相关环境因子进行研究。结果表明:三板溪水库富营养化分布状况存在着明显的时空差异;枯水期综合营养指数(TLI)为33.39~39.20,垂直断面内均为中营养水平;平水期和丰水期TLI分别在39.70~59.44和39.19~56.27,上层为轻度富营养化水平,中层和下层为中营养水平,富营养化水平随水深增加呈先降低后升高的趋势;氮和磷是引起三板溪水库富营养化水平较高的主要因素,尤其是磷对富营养化程度加剧的贡献最大,降低水库磷的输入能够有效控制水库富营养化趋势。
 

关键词: 生物有机肥, 酶活性, 微生物群落功能多样性

Abstract: In order to reveal the spatial and temporal characteristics of eutrophication in Sanbanxi Reservoir, a large and deep reservoir, and its influencing factors, the eutrophic index and related environmental factors were investigated in November (dry period) 2012, April (normal period) and July (wet period) 2013. The results indicated that the eutrophication characteristics of Sanbanxi Reservoir showed obvious spatial and temporal variations. The trophic level index (TLI) was 33.39-39.20 in the dry period and the eutrophication status kept at mesotropher. The TLI was 39.70-59.44 in the normal period and 39.19-56.27 in the wet period. The upper layer was at light eutropher, and the middle and lower layer kept at mesotropher. The eutrophication status decreased at first and then increased with the increasing depth. Nitrogen and phosphorus were the main factors causing the eutrophication status of Sanbanxi Reservoir, especially phosphorus made the greatest contribution to the eutrophication status. Reducing the discharge of phosphorus can effectively control the trend of eutrophication.

Key words: bio-organic fertilizer, microbial community functional diversity, enzyme activity