摘要
以宁夏典型沉水植物大茨藻、狐尾藻和篦齿眼子菜为试材,采用室内控制试验的方法,研究了不同水深(60、40、20 cm)和遮光条件(30%、60%、100%)对3种沉水植物的形态特征和除氮情况的影响,以期为沉水植物的引种和净化作用提供参考依据。结果表明:大茨藻、狐尾藻和篦齿眼子菜的多度、存活率随水深的增加而逐渐减少,其株高、株径和水深成反比例关系;而在遮光处理中,大茨藻和狐尾藻的多度、盖度和存活率的变化趋势相等,均为30%>100%>60%;在2种试验中,狐尾藻的除氮率均为最大,分别为99.50%、60.67%,最大净化量为11.43 L,且均衡性最高,相对其它植物更加稳定。建议在日后北方地区进行生物净化工程时,优先选择狐尾藻为建群种。
The typical submerged plants of Ningxia,Najas marina L.,Myriophyllum verticillatum L.and Potamogeton pectinatus L.were used as experimental materials.The effects of different water depths(60,40,20 cm)and shading conditions(30%,60%,100%)on the morphological characteristics and nitrogen removal of three submerged plants were studied by controlled laboratory experiments,in order to provide reference for the introduction and purification of submerged plants.The results showed that the abundance and survival rate of Najas marina L.,Myriophyllum verticillatum L.and Potamogeton pectinatus L.decreased with the increase of water depth,and the plant height,plant diameter and water depth were inversely proportional.In the shading treatment,the change trend of abundance,coverage and survival rate of Najas marina L.and Myriophyllum verticillatum L.were equal,which were 30%>100%>60%.In the two experiments,the nitrogen removal rates of Myriophyllum verticillatum L.were the highest,which were 99.50%and 60.67%,respectively,and the maximum purification capacity was 11.43 L,and the equilibrium was the highest,which was more stable than other plants.It is suggested that in the future biological purification project in the northern area,the preferred species for the construction group is Myriophyllum verticillatum L..
作者
何玉实
王筱平
何彤慧
赵明涛
王超群
HE Yushi;WANG Xiaoping;HE Tonghui;ZHAO Mingtao;WANG Chaoqun(College of Ecological Environment,Ningxia University,Yinchuan,Ningxia 750021;Laboratory of Oasis Wetland Ecology,Ningxia University,Yinchuan,Ningxia 750021;Wetland Protection Center of Yinchuan,Yinchuan,Ningxia 750021)
出处
《北方园艺》
CAS
北大核心
2022年第22期81-90,共10页
Northern Horticulture
基金
国家自然科学基金资助项目(41761102)
宁夏自然科学基金资助项目(2020AAC03015)
关键词
水深
光照
沉水植物
净化作用
water depth
light
submerged plant
purification effect
