湖泊理论藻源内负荷估算方法研究

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摘要

在模拟不同温度和营养条件下，采用水质指标COD_Cr、COD_Mn、TP、TN表征湖泊典型藻类藻源内负荷、胞外负荷、胞内负荷，形成理论藻源内负荷理论估算的方法体系.5种藻源TP负荷A_TP均值随贫、中和富营养水平升高而升高，藻源TN负荷A_TN为负值，藻源COD_Cr负荷A_CODCr随营养水平升高而显著升高.藻源胞外TP负荷E_TP、TN负荷E_TN、COD_Cr负荷E_CODCr、COD_Mn负荷E_CODMn均随营养水平升高而降低，藻源胞内TP负荷B_TP、TN负荷B_TN、COD_Cr负荷B_CODCr和COD_Mn负荷B_CODMn总体随随营养水平升高而升高.根据藻源内负荷与藻密度显著相关关系，确定了藻源内负荷计算模型.藻源TP和COD在稳定期对水质的贡献均较大，为0.2~3.7倍，藻源TN内负荷对水质的贡献为负，减少的比例在26%~58%之间.本研究表明，藻类在增殖过程中产生了超出系统物质总量的“额外”负荷，这些藻源内负荷是引起水质指标，特别是COD异常升高的重要原因.该估算方法为富营养化湖泊水华的定量削减控制提供科学依据.

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	杨苏文
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关键词 ：湖泊, 藻, 理论藻源内负荷, 胞外负荷, 胞内负荷, 估算

Abstract：

Water quality index such as COD_Cr, COD_Mn, TP, and TN were selected to characterize theory algae derived loading, extracellular loading,and algae derived intracellular loading to set up estimation method system of algae derived loading under the simulation of two temperatures and 3 nutrition levels conditions. Results showed that average A_TP of 5species kept increasing with nutrition level rising. Meanwhile the theory algae derived TN loading A_TN was basically negative. A_CODCr and ACOD_Mn kept increasing withnutrition level rising. Algae derived extracellular TP loading E_TP, extracellular TN loading E_TN, extracellular COD_Cr loading E_CODCr, and extracellular COD_Mn loading E_CODMn kept dropping with nutrition level rising. Algae derived intracellular TP loading B_TP, extracellular TN loading B_TN, extracellular COD_Cr loading B_CODCr, and extracellular COD_Mn loading B_CODMn kept increasing withnutrition level rising. Results showed that theory algae derived loading was correlation with algae density significantly. Contribution to water quality of TP and COD loading waslarger. It was in the range of 0.2~3.7 times. That of TN was negative. The percentage of declining was in the range of 26%~58%. During the process of algae growth the "extra" loading of the total amount of system material was produced. It was an important reason for the water quality indicators, especially the increase of COD. This estimation method would be an important scientific basis on waterbloom control and quantitative reduction of eutrophication lakes.

Key words： lake algae theory algae derived loading extracellular loading intracellular loading estimation

收稿日期: 2016-03-31

PACS:

X524

基金资助:

国家水体污染控制与治理科技重大专项（2012ZX07102-004）；国家自然科学基金项目（U1202235）

通讯作者: 杨苏文,研究员,yangsw@craes.org.cn E-mail: yangsw@craes.org.cn

作者简介: 杨苏文(1970-),女,内蒙古呼和浩特人,研究员,博士,主要从事湖泊水污染生态学研究.发表论文40余篇.

引用本文:

杨苏文, 金位栋, 闫玉红, 王圣瑞. 湖泊理论藻源内负荷估算方法研究[J]. 中国环境科学, 2017, 37(1): 271-283. YANG Su-wen, JIN Wei-dong, YAN Yu-hong, WANG Sheng-rui. Theoretic estimation method of algae derived loading for lakes. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(1): 271-283.

链接本文:

http://manu36.magtech.com.cn/Jweb_zghjkx/CN/ 或 http://manu36.magtech.com.cn/Jweb_zghjkx/CN/Y2017/V37/I1/271

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