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作 者 ：牛晓音,樊梅英,常杰,徐青山,郑家文,葛滢

期 刊 ：生态学报 2002年 22卷 8期 页码：1240~1246

关键词：人工湿地；有机质；积累；孔隙度；水力传导性；

Keywords:constructed wetland, organic matter, accumulation, porosity, hydraulic conductivity, harvest of plant biomass,

摘 要 ：研究了杭州西湖边人工湿地污水净化生态工程经一年多运行后有机质的积累情况 ,同时测定了基质的孔隙度和水力传导性。结果表明 ,人工湿地在运行一年后总有机质积累达到 0 .65 8kg/m2 ,60 %有机质积累主要在 0～ 1 0 0 mm。湿地上、下池有机质积累有明显差异 ,且随着基质中的深度和离入水口的距离都呈下降趋势。两池中下层孔隙度均高于上层 ,并存在显著差异。有机质积累对水力传导性和净化效果均有一定影响 ,可通过定期收割植物和清除枯落物来维持湿地的长期运作能力。

Abstract:In order to purify the eutrophic water, we setup a pilot system of the constructed wetland (CW) at the entrance of Xihu Lake, Hangzhou, China. The CW, consists of two plots A and B, is 18m long, 9m wide and 1.2m deep, and the sizes of both plot A and B are 9m long and 9m wide. The substratum of wetland were sands (diameter 1～3mm, 600mm depth) and gravel (diameter 30～50mm, 300mm depth) , on which Lolium perenne Linn was planted from winter to spring, and Coix lacryma jobi Linn. from summer to autumn...

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