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引用本文:袁轶君,毕永红,胡征宇.三峡水库主要支流碱性磷酸酶活性的比较.湖泊科学,2019,31(4):1012-1022. DOI:10.18307/2019.0405
YUAN Yijun,BI Yonghong,HU Zhengyu.Comparative study on alkaline phosphatase activity of main tributaries of Three Gorges Reservoir. J. Lake Sci.2019,31(4):1012-1022. DOI:10.18307/2019.0405
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三峡水库主要支流碱性磷酸酶活性的比较
袁轶君1, 毕永红2, 胡征宇2
1.东华理工大学化学生物与材料科学学院, 南昌 330013;2.中国科学院水生生物研究所, 武汉 430072
摘要:
为进一步认识和理解三峡水库中磷的迁移、转化规律及其与富营养化之间的关系,于2014年7月至2015年7月对三峡水库12条典型支流的水体碱性磷酸酶活性进行跟踪观测与比较分析,同步监测各样点水体的理化指标.结果发现,各支流水体碱性磷酸酶活性的分布呈现显著的时空异质性,该异质性与各支流水体富营养化程度密切相关.从季节上看,春季碱性磷酸酶活性呈逐渐上升的趋势,到夏季达到高峰,秋季碱性磷酸酶活性逐渐下降,冬季降到全年最低点.从空间分布上看,水体碱性磷酸酶活性在各支流的总体分布趋势为:小江 > 香溪河 > 苎溪河 > 童庄河 > 青干河 > 袁水河 > 磨刀溪 > 梅溪河 > 汤溪河 > 草堂河 > 大宁河 > 神农溪.综合营养指数较高的小江、香溪河和苎溪河,其碱性磷酸酶活性较高;综合营养指数较低的大宁河和神农溪,碱性磷酸酶活性较低.相关分析显示,各支流碱性磷酸酶活性与水温、溶解氧、电导率、pH和浊度均存在显著正相关;与透明度呈显著负相关.在营养盐方面,碱性磷酸酶活性与可溶性活性磷呈显著负相关;与高锰酸盐指数、叶绿素a浓度和综合营养状态指数均呈显著正相关.不同时期不同生物的贡献和不同环境因素的影响是导致碱性磷酸酶时空异质性的主要原因.
关键词:  碱性磷酸酶  富营养化  综合营养状态指数  三峡水库支流
DOI:10.18307/2019.0405
分类号:
基金项目:江西省教育厅科学技术研究项目(GJJ160586)、国家自然科学基金项目(31123001)和中国长江三峡集团公司科研项目(CT-12-08-01)联合资助.
Comparative study on alkaline phosphatase activity of main tributaries of Three Gorges Reservoir
YUAN Yijun1, BI Yonghong2, HU Zhengyu2
1.School of Chemistry, Biology and Material Science, East China University of Technology, Nanchang 330013, P. R. China;2.Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
Abstract:
To further understand the migration and transformation characteristics of phosphorus and its relationship with eutrophication in the Three Gorges Reservoir, the physical and chemical parameters, alkaline phosphatase activity of 12 typical tributaries of the reservoir were analyzed from July 2014 to July 2015. The research found significant seasonal and regional variations of alkaline phosphatase activity in the tributaries, and the heterogeneity was closely related to the degree of eutrophication. In temporal view, alkaline phosphatase activity was gradually increased from spring to summit in summer. The activity of alkaline phosphatase then dropped from autumn to bottom in winter. On the spatial side, the activity of alkaline phosphatase had high values in Xiaojiang River, Xiangxi River and Zhuxi River, which were at high level of eutrophication. The activity of alkaline phosphatase had low values in Daning River and Shennong River, which were at low level of eutrophication. The correlation analysis results showed that there was a significant positive correlation between alkaline phosphatase activity and water temperature, dissolved oxygen, conductivity, pH and turbidity; there was a significant negative correlation between alkaline phosphatase activity and transparency in each tributary. In terms of nutrient, alkaline phosphatase activity was significantly negatively correlated with soluble active phosphorus and positive correlated with chemical oxygen demand, chlorophyll-a and trophic state index. The contributions of different organisms and the influences of different environmental factors are the main causes of the spatial and temporal heterogeneity of alkaline phosphatase.
Key words:  Alkaline phosphatase  eutrophication  trophic state index  tributaries of Three Gorges Reservoir
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