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Authors Cheng, R; Zhu, H; Cheng, XW; Shutes, B; Yan, BX
Author Full Name Cheng, Rui; Zhu, Hui; Cheng, Xianwei; Shutes, Brian; Yan, Baixing
Title Saline and Alkaline Tolerance of Wetland Plants-What are the Most Representative Evaluation Indicators?
Source SUSTAINABILITY
Language English
Document Type Article
Author Keywords aquatic plants; saline-alkaline tolerance; germination; seedlings growth; reproduction; constructed wetlands
Keywords Plus FLOW CONSTRUCTED WETLANDS; EARLY SEEDLING STAGES; SALT-STRESS; ION BALANCE; WASTE-WATER; GROWTH; GERMINATION; MECHANISMS; PHOTOSYNTHESIS; ACCUMULATION
Abstract 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, Na+ accumulation in plant tissue, Na+/K+ ratios in aerial tissue and the total dry biomass were selected as most representative indicators for evaluating the saline and alkaline tolerance of plants. Iris sibirica and Lythrum salicaria showed better saline and alkaline tolerance ability among tested species and could be grown in CWs for treating saline and/or alkaline wastewater.
Author Address [Cheng, Rui; Zhu, Hui; Cheng, Xianwei; Yan, Baixing] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China; [Cheng, Rui; Cheng, Xianwei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Shutes, Brian] Middlesex Univ, Dept Nat Sci, London NW4 4BT, England
Reprint Address Zhu, H (corresponding author), Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China.
E-mail Address chengrui@iga.ac.cn; zhuhui@iga.ac.cn; gaoxiaoshang2366@163.com; B.Shutes@mdx.ac.uk; yanbx@iga.ac.cn
ORCID Number ZHU, Hui/0000-0003-0312-1281
Funding Agency and Grant Number National Key R&D Program of China [2016YFC0500404-4]; Youth Innovation Promotion Association of CAS [2017274]
Funding Text This work was funded by the National Key R&D Program of China (No. 2016YFC0500404-4) and the Youth Innovation Promotion Association of CAS (No. 2017274).
Times Cited 3
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher MDPI
Publisher City BASEL
Publisher Address ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
29-Character Source Abbreviation SUSTAINABILITY-BASEL
ISO Source Abbreviation Sustainability
Publication Date MAR 1
Year Published 2020
Volume 12
Issue 5
Article Number 1913
Digital Object Identifier (DOI) 10.3390/su12051913
Page Count 18
Web of Science Category Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
Subject Category Science & Technology - Other Topics; Environmental Sciences & Ecology
Document Delivery Number KY3KU
Unique Article Identifier WOS:000522470900214
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