老虎潭水库水体富营养化现状及防治措施

The Current Eutrophication of Laohutan Reservoir and Prevention Measures

通过对老虎潭水库营养元素氮、磷及氮磷比的研究,对该水库营养化状态进行分析,并针对水库的富营养化现状及特点,提出若干防治措施。结果表明,老虎潭水库处于好氧、弱碱性环境,硝态氮是总氮的主要赋存形式,不溶性磷积累沉积于库底;水库磷含量较低,属于磷限制性水库。

Analysis on the Laohutan reservoir eutrophication state was made through the study of nitrogen,phosphorus and the ratio of nitrogen to phosphorus（ N / P,an index of stoichiometry）. Some prevention measures were proposed according to the eutrophication status and characteristics of the reservoir. The results showed that the reservoir was in the aerobic and weak alkaline environment; the nitrate nitrogen was the main existing form of total nitrogen,and insoluble phosphorus accumulated and deposited at the bottom of reservoir. The reservoir was restricted by phosphorus because of the low phosphorus content.