香蒲、灯心草人工湿地的研究─Ⅱ.净化污水的空间

应用测定流水中溶氧量的方法，测定了长薄鳅的耗氧率，耗氧量及窒息点．试验表明：长薄鳅的耗氧率（Ｙ’）随鱼体重（Ｗ，ｇ）的增加而增大，其关系式分别为：Ｙ’＝１８６．５７６Ｗ（－０．２０４３），Ｙ＝０．１８６Ｗ（０．７９６２）．温度对长薄鳅的耗氧率有影响，在１３－３０Ｃ范围内，耗氧率随水温升高而逐渐增大．耗氧率的温度敏感区域是１３－２３Ｃ和２８－３０Ｃ，而在２３－２８Ｃ范围内变化幅度较小，标准代谢量变化

The Asphyxiation Point and Oxygen Consumption Rate in Leptobotia elongata (Bleeker)

Dealt with the growing debth of macmphytes roots.spatial distributions of microorganisms and enzyme in artificial wetland and comparison of removal rates of contaminants in different depths of artificial wetlands.the better purifying space in artificial wetland wastewater treatment system has been discussed.From studies on the artificial wetland with cattail(Typha angustifilia)and rush(Juneus effusus), roots of macmpyhter are distributed mainly over 25cm up surface in wetland, spatial distribution of micro rganisms is as follows.The numbers of 5-10em depth are more than the 20cm depth's and further more thanthe 35cm depth's.The activity of phosphata, glucan de-hydratase and proteinase in surface is higher than 20cm depth's.In winter, the performance of purifying wastewater of the Wetland which deeps 20em shows almost no difference with the wetland which deeps 60cm.It may be deduced that there is a better purlfying space in the upper level of artificial wetland for wastewater treatment.