摘要
选用湖南居住区水体应用较多的4种观赏性水生植物千屈菜、石菖蒲、水芋、睡莲进行水体净化对比试验,结果表明,千屈菜、石菖蒲、水芋、睡莲对总磷(TP)、总氮(TN)的吸收效果都非常明显;4种植物对化学需氧量(COD)的去除率按大小排序依次为:石菖蒲>睡莲>水芋>千屈菜;对生化需氧量(BOD5)的去除率为石菖蒲>睡莲>水芋>千屈菜;水中溶解氧(DO)的含量为睡莲>千屈菜>石菖蒲>水芋,4种植物均能将水体pH值维持在6.5～8.5,符合景观娱乐用水水质标准。
we made a purified contrast tests with four aquatic plants named Lythrum salicaria,Acorus tatarinowii,Calla palustris,and Nymphaea tetragona.The results showed that Lythrum salicaria,Acorus tatarinowii,Calla palustris,and Nymphaea tetragon,had an obvious absorption to the total phosphorus(TP) and total nitrogen(TN).The removal rate for chemical oxygen demand(COD) of four plants from strong to weak is Acorus tatarinowii > Nymphaea tetragona > Calla palustris > Lythrum salicaria;the removal rate for biochemical oxygen demand of them in five days(BOD5) from strong to weak is Acorus tatarinowii > Nymphaea tetragona > Calla palustris> lythrum salicaria;dissolved oxygen(DO) content of them from big to small is Nymphaea tetragona > Lythrum salicaria > Acorus tatarinowii > Calla palustris.Each one of four plants is able to maintain the water pH between 6.5 and 8.5 which reaches the water quality standards of the recreational landscape.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第S2期115-119,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南省科学技术厅项目(2010NK2007)
关键词
观赏性水生植物
居住区水体
净化效果
ornamental aquatic plants
residential water body
purification
