摘要
为筛选出可用于修复土壤N、P污染的植物种类,以武夷山生活污水处理厂人工湿地再力花(Thalia dealbata)、花叶芦荻(Arundo donax var.versicolor)和香根草(Vetiveria zizanioides L.)3种植物为研究对象,通过测定一个生长季内(第7,14,21和28周)3种植物的生物量和N、P含量及其对应土壤的N、P含量,分析其生物量,N、P积累量,富集系数和迁移系数的变化特点,并建立植物N、P积累量与生物量和N、P含量的线性回归关系.结果显示:1)人工湿地3种植物的生物量和N、P积累量在不同取样时间和不同植物间均存在显著性差异(p<0.05);除第7周外,再力花和花叶芦荻在其他取样时间的叶茎生物量比均小于1;再力花和花叶芦荻的叶N积累量平均值大于茎,叶P积累量平均值小于茎(p<0.05).2)除再力花茎和花叶芦荻茎的N积累量与N含量、花叶芦荻叶的P积累量与P含量外,其他植物不同器官的N、P积累量与生物量和N、P含量均存在显著的线性回归关系(p<0.05).3)3种植物不同器官在各取样时间的N、P富集系数均大于1;再力花除在第7周的P迁移系数小于1外,其他取样时间的N、P迁移系数均大于1;花叶芦荻在各取样时间的N迁移系数大于1,而P迁移系数小于1.综上所述,3种植物对N、P的吸收、富集和迁移能力有所不同,花叶芦荻对N、P的去除效果最佳,在人工湿地植物配置中可优先考虑种植花叶芦荻.
The purpose of this study was to screen plant species that can be used to repair N,P polluted soil.This study selected Thalia dealbata,Arundo donax var.versicolor and Vetiveria zizanioides L.in Wuyi Mountain constructed wetland to measure biomass,content of N and P of plant,and content of N,P of soil in order to analyze the changes in biomass,accumulation of N and P,enrichment coefficients and migration coefficients of these three plant species.A linear regression was established between accumulation of N and P of plant and biomass,and between accumulation of N and P and content of N and P.The results are as follows:1)there were significant differences in the biomass and accumulation of N and P of the three plant species at different sampling times and among different plants(p<0.05);the ratio of leaf to stem biomass of T.dealbata and A.donax var.versicolor was less than 1 except at the 7 th week;the average N accumulation in the leaves of T.dealbata and A.donax var.versicolor was greater than in their stems,while the average P accumulation in leaves was less than that in stems(p<0.05).2)Significant linear regressions(p<0.05)were found between biomass and accumulation of N and P,and between accumulation and content of N and P,except for the stem of T.dealbata and A.donax var.versicolor whose accumulation of N was not significantly correlated with the content of N,and for A.donax var.versicolor whose accumulation of P was not significantly correlated with the content of P.3)The N and P enrichment coefficients of different organs in different plants were higher than 1 at each sampling time;the N and P migration coefficients of T.dealbata were greater than 1 except at the 7 th week when the P migration coefficient was less than 1;the N migration coefficient of A.donax var.versicolor at each sampling time was greater than 1,while the P migration coefficent less than 1.In summary,the three plants have different absorbing,enrichment and migration abilities in terms of N and P,and A.donax var.versicolor has the best effe
作者
郭汝凤
刘鑫铭
李冠军
黄婷
吴承祯
林勇明
李键
GUO Rufeng;LIU Xinming;LI Guanjun;HUANG Ting;WU Chengzhen;LIN Yongming;LI Jian(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Fujian Provincial Key Laboratory for Eco-industrial Green Technology,College of Ecology and Resource Engineering,Wuyi University,Nanping 354300,China)
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第4期499-506,共8页
Journal of Xiamen University：Natural Science
基金
福建农林大学科技创新专项(CXZX2016055,CXZX2018122)
福建农林大学林学院林学高峰学科优秀博硕士培养工程(71201800781)。
关键词
再力花
花叶芦荻
香根草
氮积累
磷积累
富集能力
迁移能力
Thalia dealbata
Arundo donax var.versicolor
Vetiveria zizanioides L.
N accumulation
P accumulation
enrichment ability
migration ability
