光照、温度和藻类对底泥释放磷的影响

在悬浮底泥与藻类体系中,不同温度和光照条件对底泥释放磷的影响方面的研究,尚未见到过报道。现对此进行了研究,并得出下述结论:有藻存在时底泥的释放量大于无藻存在时底泥的释放量。光照度大时(一定限度下),底泥的释放量稍有增加;温度升高时,底泥的释放量加大;水柱中含泥量大时,则磷的释放量也大。此工作对在不同条件下浅湖的内负荷量计算提供了基础。

The Effects of Illumination, Temperature and Algae on the Release of Phosphorus from Suspended Sediment in Lake Dianchi

There is still no report about the research of the effects of illumination and temperature on the release of phosphorus from suspended sediment. The following conclusions were obtained from our experiments. The quantity of phosphorous released from suspended sediment into water body was greater with the existense of algae; increased slightly as radiance increased; but much more as temperature rose. The greater the concentration of suspended sediment in water column, tne more the release quantity of phosphorus.Above findings lay a foundation to evalute the internal loading of phosphorus in a shallow lake under different conditions.