首页    期刊浏览 2025年07月11日 星期五
登录注册

文章基本信息

  • 标题:Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?
  • 本地全文:下载
  • 作者:Rui Cheng ; Hui Zhu ; Xianwei Cheng
  • 期刊名称:Sustainability
  • 印刷版ISSN:2071-1050
  • 出版年度:2020
  • 卷号:12
  • 期号:5
  • 页码:1913
  • DOI:10.3390/su12051913
  • 语种:English
  • 出版社:MDPI, Open Access Journal
  • 摘要:The increasing discharge of wastewater containing inorganic salts, sometimes accompanied by high pH, has been a worldwide environmental problem. Constructed wetlands (CWs) are considered a viable technology for treating saline and/or alkaline wastewater provided that saline-alkaline tolerant plant species are selected and applied. The influence of both saline and alkaline stress on four wetland plant species during their seed germination, early growth, vegetative propagation and continued growth stages was evaluated by three experiments. Principal component analysis (PCA) was conducted for selecting representative indicators for evaluating the saline and alkaline tolerance of plants during vegetative propagation and plant growth stages. The saline and alkaline stress inhibited the vegetative propagation and plant growth of all tested plant species to varying degrees, therein the influences of saline-alkaline stress on plants were more marked than saline stress. The length of new roots, Nasup+/sup accumulation in plant tissue, Nasup+/sup/Ksup+/sup ratios in aerial tissue and the total dry biomass were selected as most representative indicators for evaluating the saline and alkaline tolerance of plants. iIris sibirica/i and iLythrum salicaria/i showed better saline and alkaline tolerance ability among tested species and could be grown in CWs for treating saline and/or alkaline wastewater.
国家哲学社会科学文献中心版权所有