亚热带水体营养状态定量评价及预测研究
STUDIES ON QUANTITATIVE ASSESSMENT AND PREDICTION OF NUTRIENT STATUS IN THE SUBTROPICS WATERS
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摘要: 采用相关加权营养状态指数法对H水库营养状态进行连续的数值化分级评价,准确反映了该水库的营养状态发展阶段和富营养化发展过程,克服了固定参数值评价湖泊、水库营养状态的局限性和重叠现象.根据湖泊外力函数(主要是外来性营养盐浓度或负荷)与湖内营养状态响应间的定量关系及OECD国际合作组织研究成果,提出了H水库营养盐输入负荷与库中磷浓度响应关系数学模型,确定了在水体功能改变后,其磷允许负荷量及控制标准,结果与实际相符.Abstract: This paper presents the quantitative assessment and prediction results of the nutrient states in the subtropic/tropic waters. By using the method of relative weighed nutrient status index, the nutrient states of H Reservoir were continuonsly and numerically assessed. it revealed the steps of nutrient development and processes of eutrophication, which overcame the limitations and overlaps of nutrient status assessments for lakes and reservoirs by using fixed parameters. Based on the responding relation between lake external force functions(mainly the concentrations or loadings of external nutrient salts)and the research result of international cooperative organization of OECD, mathematical models of phosphorus concentrations of H Reservoir responding to nutrient salts inflow loadings and control standards are put forward and the results are identical with reality. Assessing methods and predicting models raised in this paper could also be applied to other lakes and reservoirs in the subtropics/tropics.
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Keywords:
- Drinking water resources /
- Nutrient states /
- Assessment /
- Prediction
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