两类木本植物对岸带土壤磷素的去除作用研究

发布时间：2017-12-28 23:21

本文关键词：两类木本植物对岸带土壤磷素的去除作用研究　出处：《安全与环境学报》2016年06期 　论文类型：期刊论文

【摘要】：为了解植物对水体岸边过渡带土壤磷素去除作用的差异和机理,以及为构建生态岸堤带,防治水体富营养化提供理论依据,选用太湖地区常见且适合岸带生长的两类木本植物灌木火棘(Pyracantha fortuneana)、迎春(Jasminum nudiflorum)、构骨冬青(Ilex cornuta)、大叶黄杨(Euonymus japonicus)、扶芳藤(Euonymus fortunei)和乔木广玉兰(Magnolia grandiflora)、香樟(Cinnamonum campora)、马尾松(Pinus massoniana)为试材,采用模拟不同磷素水平土壤的盆栽试验方法,研究不同磷素水平土壤对两类木本植物叶片磷质量比、叶绿素质量比及叶绿素荧光参数的影响,分析植物对磷素利用差异,并比较不同植物对土壤中磷素去除作用的强弱。结果表明,低磷质量比时灌木中构骨冬青叶片磷质量比增加最多,乔木中马尾松、广玉兰叶片磷质量比增加显著;中、高磷质量比时,灌木中火棘、乔木中马尾松叶片磷质量比增幅最大,分别达108%、209%。土壤中磷质量比均显著降低,且两类木本植物对土壤磷吸收率相差不大,但灌木中火棘吸收率均最大。综合分析各植物叶绿素质量比与叶绿素荧光参数可知,灌木中扶芳藤、构骨冬青,乔木中广玉兰、马尾松低磷质量比时抗胁迫能力更好;灌木中火棘,乔木中广玉兰中磷质量比时抗胁迫能力更好;灌木中大叶黄杨、火棘,乔木中马尾松高磷质量比时抗胁迫能力更好,生长良好。研究表明,在生长良好的前提下,低磷质量比时灌木中构骨冬青、乔木中马尾松对磷的吸收最明显;对中、高质量比磷素污染土壤,灌木中火棘、乔木中马尾松的修复能力最好。
[Abstract]:With soil on the shore water transition understanding plant phosphorus removal effect and mechanism of the differences, as well as the construction of ecological embankment, provide a theoretical basis for the prevention of eutrophication in water, with two kinds of woody plants in shrub Pyracantha common area of Taihu coastal zone and suitable for the growth of (Pyracantha fortuneana), Ying Chun (Jasminum nudiflorum), bone structure Holly (Ilex cornuta) and Euonymus japonicus (Euonymus japonicus), fufangteng (Euonymus fortunei) and tree Magnolia (Magnolia grandiflora) (Cinnamonum, Campora), camphor pine (Pinus massoniana) as test materials, pot experiment by means of simulation of different phosphorus level of soil. The effects of different phosphorus level of soil two kinds of woody plant leaf phosphorus ratio, chlorophyll ratio and chlorophyll fluorescence parameters, analysis of plant phosphorus utilization differences, and compared different plants on soil phosphorus to In addition to the strength of the effect. The results showed that low phosphorus mass ratio of shrubs of bone structure holly leaf phosphorus ratio increased most significantly, trees of Pinus massoniana, magnolia leaf P mass ratio increased; middle and high phosphorus ratio, Pyracantha and trees of Pinus massoniana in leaf phosphorus quality than shrubs increased most, up to 108% and 209% respectively. Phosphorus in soil quality decreased, and two kinds of woody plants on soil phosphorus absorption rate had little difference, but the absorption rate was the highest in shrub pyracantha. A comprehensive analysis of the quality of plant chlorophyll and chlorophyll fluorescence parameters than that of shrub, when Yoshito and holly trees in bone structure, Magnolia grandiflora, Pinus massoniana to low phosphorus stress resistance better than quality; shrubs of Pyracantha, magnolia trees in quality of phosphorus in stress resistance is better than shrub; in Euonymus japonicus, Pyracantha, pine high when the mass ratio of phosphorus in tree growth better stress resistance, good. Research shows that in the premise of good growth, low phosphorus mass ratio of shrubs in the Masson pine tree in holly, bone structure of phosphorus uptake was most obvious; mass ratio of middle and high phosphorus pollution in soil, shrub repair ability of Pyracantha and the best trees of Pinus massoniana.
【作者单位】：江南大学环境与土木工程学院;
【基金】：科技部“十二五”水体污染与治理科技重大专项(2012ZX07101-013) 江南大学科研创新项目(2013212,2013218)
【分类号】：X173;X53
【正文快照】： 0引言在植物生长发育过程中,磷作为其不可或缺的营养元素,在生物遗传信息和能量传递中起着极其重要的作用[1]。然而近年来,我国太湖湖泊富营养化发展速度快,富营养化程度愈发严重,湖泊生态系统功能退化,时常伴随“水华”灾害发生,已成为全世界瞩目的重要环境问题[2]。蠡河位于

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