|本期目录/Table of Contents|

[1]王香莲,高桂青,刘博,等.鄱阳湖流域浮萍种质资源分布及其对水环境因子的响应[J].应用与环境生物学报,2020,26(04):1000-1009.
　WANG Xianglian,GAO Guiqing,et al.Distribution of duckweed germplasm resources and its response to water environment factors in Poyang Lake basin[J].Chinese Journal of Applied & Environmental Biology,2020,26(04):1000-1009.
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鄱阳湖流域浮萍种质资源分布及其对水环境因子的响应()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年04期
页码:
1000-1009
栏目:
研究论文
出版日期:
2020-08-25

文章信息/Info

Title:
Distribution of duckweed germplasm resources and its response to water environment factors in Poyang Lake basin
作者:
王香莲; 高桂青; 刘博; 龚之涵; 罗瑾; 王锴; 徐晨晨; 卢天宇; 胡万聪; 吴代赦; 黄庭
1南昌大学资源环境与化工学院，鄱阳湖环境与资源利用教育部重点实验室 南昌 330031 2南昌工程学院土木与建筑工程学院 南昌 330099 3河北工程大学能源与环境工程学院 邯郸 056038
Author(s):
WANG Xianglian1;  2;  GAO Guiqing2;  LIU Bo2;  GONG Zhihang2;  LUO Jin3;  WANG Kai2;  XU Chenchen2;  LU Tianyu2;  HU Wanchong2;  WU Daishe1? & HUANG Ting1?
1 School of Resource Environment and Chemical Engineering; Key Laboratory of Poyang Lake Environment and Resources of Utilization Ministry of Education, Nanchang University, Nanchang 330031, China2 School of Civil and Architecture Engineering, Nanchang Institute of Technology, Nanchang 330099, China3 School of Energy and Environmental Engineering, Hebei University of Engineering, Handan 056038, China
关键词:
浮萍; 水环境; 氮; 磷; 重金属; RDA分析
Keywords:
duckweed;  water environment;  nitrogen;  phosphorus;  heavy metal;  RDA analysis
摘要:
为全面了解鄱阳湖流域浮萍种属资源分布及其生长水环境，对流域内浮萍资源开展调查并测定生长水体的水质. 结果显示，鄱阳湖流域采集到的浮萍共4属5种，分别为青萍（Lemna minor）、稀脉浮萍（Lemna perpusilla）、紫背浮萍（Spirodela polyrrhiza）、少根紫萍（Landoltia punctata）、芜萍（Wolffia arrhiza）、青萍和紫背浮萍为该地区的优势种. 青萍生长水体的pH范围最广（5.5-9.43），其他浮萍生长水体呈弱酸性. 青萍生长水体中的氨氮（NH3-N）、硝态氮（NO3-N）、总氮（TN）、化学需氧量（COD）浓度范围较其他4种浮萍更为广泛，分别为0.18-4.25 mg/L、0.027-3.27 mg/L、0.38-13.28 mg/L、16.16-614.72 mg/L，少根紫萍生长水体的总磷（TP）浓度范围最广，为0.06-2.68 mg/L. 从重金属含量来看，青萍生长水体Cu、Pb、Zn、Co含量范围最广，少根紫萍对Cd、紫背浮萍对Mn的适应能力表现出优势. 从自然状态下富集效果来看，青萍对Zn、紫背浮萍对Cr、少根紫萍对Mn的富集能力强. 青萍和紫背浮萍对Pb富集效果好于少根紫萍. RDA分析表明，少根紫萍的分布主要受TN、TP、NH3-N的影响，紫背浮萍主要受Mn的影响，青萍主要受NO3-N的影响. 稀脉浮萍和芜萍分别受Cd、Cr的影响. 不同浮萍种属的水环境差异较大，在修复富营养化水体时，可利用当地优势品种组合以达到最佳的去除效果. 根据浮萍对重金属耐受能力、富集效果的不同可筛选出对特定重金属耐性好且富集能力强的品种. 本研究对利用浮萍品种修复不同污染的水体具有一定的指导意义. （图4 表5 参40）
Abstract:
The duckweed resources growing in the Poyang Lake basin were investigated to assess the ecological means of restoring the problematic water environment. The measured water environmental factors included the pH value, chemical oxygen demand (COD), NH3-N (ammonium nitrogen), NO3-N (nitrate nitrogen), TN (total nitrogen), TP (total phosphorus), and heavy metal content. There were 5 species of duckweed in 4 generations collected from Poyang Lake basin, Lemna minor, Lemna perpusilla, Spirodela polyrrhiza, Landoltia punctata, and Wolffia arrhiza. Lemna minor and Spirodela polyrrhiza were the dominant species in the region, and Lemna minor had the widest range of pH adaptability (5.5 to 9.43) in the water environment (the other duckweeds tended toward weakly acidic). The concentration ranges of NH3-N, NO3-N, TN, and COD in the water where Lemna minor grew was wider than for the other four types, which were 0.18-4.25 mg/L, 0.027-3.27 mg/L, 0.38-13.28 mg/L, and 16.16-614.72 mg/L, respectively. The broadest TP range was in the water of Landoltia punctata (0.06 - 2.68 mg/L). Lemna minor had a wider tolerance to heavy metals, copper (Cu), lead (Pb), zinc (Zn), and cobalt (Co), and it showed a predominance of adaptability for Landoltia punctate versus cadmium (Cd) and Spirodela polyrrhiza versus manganese (Mn). Lemna minor had the best enrichment effect to Zn, as did Spirodela polyrrhiza to chromium (Cr) and Landoltia punctata to Mn. Lemna minor and Spirodela polyrrhiza had better enrichment effects to Pb than Landoltia punctata. Redundancy analysis (RDA) showed that the distribution of Landoltia punctata was affected by the contents of TN, TP, and NH3-N, while Spirodela polyrrhiza was affected by Mn, and Lemna minor was affected by NO3-N. Likewise, Lemna perpusilla and Wolffia arrhiza were affected by Cd and Cr, respectively. These results show that the water environments of duckweed growth differ. When restoring eutrophic environments, we must choose the appropriate local varieties to achieve optimal effects. The dominant varieties with good tolerance and strong biomass accumulation ability to certain heavy metals should also be screened. This study provides guidance for the rehabilitation of polluted waters with suitable duckweed species.

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更新日期/Last Update: 2020-08-25