摘要
研究了陆生植物美人蕉(Canna generalis)与紫背万年青(Rhoeo discolor)不同种植方式对净化富营养化水体中氮的影响。结果表明,美人蕉、紫背万年青的双倍生物量组对水体中TN、NO3--N和NH4+-N的去除率均显著高于它们的单倍生物量组,植物生物量的适度增加提高了植物对水体中N的去除效果。两种陆生植物的复合种植体系对TN、NO3--N和NH4+-N的去除率和单一种植体系不呈现显著性差异,说明美人蕉、紫背万年青的不同种植体系对水体中TN、NO3--N和NH4+-N去除率的影响不明显。美人蕉、紫背万年青去除水体中TN、NO3--N和NH4+-N的动态过程拟合模型说明各植物处理组对水体中不同形态氮有持续的净化作用。
The study on the effect of terrestrial plants（ Canna generalis and Rhoeo discolor）in different planting patterns repairing entropic water showed that the removal rates of TN, NO3^-N and NH4^＋ -N in both Canna generalis and Rhoeo discolor＇s double biomass groups are significantly higher than the ones in their single biomass groups. The removal rate of N in eutrophic water increased along with the proper increasing of plant biomass. The complex system of Canna generalis and Rhoeo discolor have no significant difference on purifying TN, NO3^- -N and NH4^＋ -N with their monocuhure systems. The result indicated that the effect of Canna generalis and Rhoeo discolor in different planting systems removing TN, NO3^-N and NH4^＋ -N from water is not signifi- cant. The fitting method of dynamics processes of removing TN, NO3^- -N and NH4^＋ -N by Canna generalis and Rhoeo discolor showed that the two terrestrial plants have sustained purification of 3 different forms of nitrogen in water.
出处
《华中科技大学学报（城市科学版）》
CAS
2009年第2期23-28,共6页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金(20777021)
福建省自然科学基金(D0610012)
华侨大学高层次人才科研启动基金(04BS312)
关键词
种植方式
陆生植物
植物修复
美人蕉
紫背万年青
富营养化
氮
planting patterns
terrestrial plant
phytoremediation
Canna gerteralis
Rhoeo discolor
eutrophi-cation
nitrogen
