Management of Phosphorus and Nitrogen Inputs to Lake Rotorua, New Zealand
Management of Phosphorus and Nitrogen Inputs to Lake Rotorua, New Zealand
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新西兰罗托鲁瓦湖磷和氮输入的管理
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
E. White
中科院分区：
文献类型：
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作者：
J. Rutherford;R. Pridmore;E. White
自20世纪60年代以来，罗托鲁瓦湖的水质不断恶化，原因是罗托鲁瓦市污水处理厂磷和氮投入量增加，导致浮游植物过度生长。单独去除磷可能不会对湖泊状况产生明显的改善，除非它能成为限制性养分。即便如此，这可能需要数年时间，因为磷已经在湖系统中循环利用。单独去除氮可能会在短期内（例如 5-10 年）减少浮游植物的生长，但不建议这样做，因为藻类群落可能会以异囊蓝绿藻为主，这些藻类可以通过固定溶解的分子氮来满足其氮需求，并形成密集的难看的组合。因此，建议同时去除氮和磷。建议的目标是将湖泊状况恢复到 20 世纪 60 年代之前的水平，当时公众对浮游植物的生长产生了广泛的担忧。科学的观点是，...
The water quality of Lake Rotorua has deteriorated since the 1960s because of excessive phytoplankton growths caused by increased inputs of phosphorus and nitrogen from the Rotorua city sewage treatment plant. Removal of phosphorus alone may produce no measurable improvement in lake condition unless it can be made the limiting nutrient. Even then, this may take a number of years, because of recycling of phosphorus already in the lake system. Removal of nitrogen alone may reduce phytoplankton growth, in the short term (say 5–10 yr) but is not recommended because the algal community may become dominated by heterocystous blue‐green algae, which can meet their nitrogen requirements by fixing dissolved molecular nitrogen and form dense unsightly assemblages. Thus, removal of both nitrogen and phosphorus is recommended. A suggested aim is to restore the lake condition to that which prevailed prior to the 1960s, before widespread public concern about phytoplankton growths developed. The scientific view is that t...