Substances released during the decomposition of Vallisneria natans and Thalia dealbata
Two types of aquatic plants commonly used for the ecological restoration of rivers and lakes, Vallisneria natans (Lour.) Hara and Thalia dealbata Fraser ex Roscoe, were selected and grouped by plant parts (root, stem and foliage), and decomposing release experiments were conducted. The influence of...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844022027293 |
| _version_ | 1811320570198884352 |
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| author | Zhaoxin Li Peng Liu Zhiyan Sun Ning Ma Jijian Lian |
| author_facet | Zhaoxin Li Peng Liu Zhiyan Sun Ning Ma Jijian Lian |
| author_sort | Zhaoxin Li |
| collection | DOAJ |
| description | Two types of aquatic plants commonly used for the ecological restoration of rivers and lakes, Vallisneria natans (Lour.) Hara and Thalia dealbata Fraser ex Roscoe, were selected and grouped by plant parts (root, stem and foliage), and decomposing release experiments were conducted. The influence of the released substances on the water quality was analyzed, as well as the amount of nutrients released by each part of these two plants. The calculated maximum chemical oxygen demand releases from the foliage of V. natans and the foliage of T. dealbata were approximately 5.4 g/kg and 22.65 g/kg, respectively. Through three-dimensional fluorescence spectrum and parallel factor analyses, the different material compositions of the decomposing liquids from the plants were determined, and the main dissolved organic components of the decomposing liquid of V. natans were amino-acid-like and microbially derived humics, and those T. dealbata were soluble microbial by-product-like substances. The carbon-to-nitrogen ratio and humification index of each experimental group were compared. The experimental results showed that different parts of V. natans and T. dealbata had different rates of nutrient release. The dissolved organic matter in the decomposed solution can be utilized by microorganisms, which have the potential to become additional carbon sources. This study provides a new method for the treatment of aquatic plant litter. Different plant species can be used in combination according to their characteristics to ensure that better results are achieved during water treatment processes that use plant decomposing liquids as additional carbon sources. |
| first_indexed | 2024-04-13T13:01:46Z |
| format | Article |
| id | doaj.art-3f33b8474e364c9798634d24b325d079 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-13T13:01:46Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-3f33b8474e364c9798634d24b325d0792022-12-22T02:45:54ZengElsevierHeliyon2405-84402022-11-01811e11441Substances released during the decomposition of Vallisneria natans and Thalia dealbataZhaoxin Li0Peng Liu1Zhiyan Sun2Ning Ma3Jijian Lian4School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, Hebei Province, China; Hebei Key Laboratory of Intelligent Water Conservancy, Handan 056038, Hebei Province, China; Beijing Water Science and Technology Institute, Beijing 100048, China; Corresponding author.Beijing Water Science and Technology Institute, Beijing 100048, ChinaTianjin Research Center of Urban Management, Tianjin 300201, ChinaBeijing Water Science and Technology Institute, Beijing 100048, ChinaSchool of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, Hebei Province, China; Hebei Key Laboratory of Intelligent Water Conservancy, Handan 056038, Hebei Province, China; Corresponding author.Two types of aquatic plants commonly used for the ecological restoration of rivers and lakes, Vallisneria natans (Lour.) Hara and Thalia dealbata Fraser ex Roscoe, were selected and grouped by plant parts (root, stem and foliage), and decomposing release experiments were conducted. The influence of the released substances on the water quality was analyzed, as well as the amount of nutrients released by each part of these two plants. The calculated maximum chemical oxygen demand releases from the foliage of V. natans and the foliage of T. dealbata were approximately 5.4 g/kg and 22.65 g/kg, respectively. Through three-dimensional fluorescence spectrum and parallel factor analyses, the different material compositions of the decomposing liquids from the plants were determined, and the main dissolved organic components of the decomposing liquid of V. natans were amino-acid-like and microbially derived humics, and those T. dealbata were soluble microbial by-product-like substances. The carbon-to-nitrogen ratio and humification index of each experimental group were compared. The experimental results showed that different parts of V. natans and T. dealbata had different rates of nutrient release. The dissolved organic matter in the decomposed solution can be utilized by microorganisms, which have the potential to become additional carbon sources. This study provides a new method for the treatment of aquatic plant litter. Different plant species can be used in combination according to their characteristics to ensure that better results are achieved during water treatment processes that use plant decomposing liquids as additional carbon sources.http://www.sciencedirect.com/science/article/pii/S2405844022027293Aquatic plantReleased substancesCarbon sourcesDissolved organic matter |
| spellingShingle | Zhaoxin Li Peng Liu Zhiyan Sun Ning Ma Jijian Lian Substances released during the decomposition of Vallisneria natans and Thalia dealbata Heliyon Aquatic plant Released substances Carbon sources Dissolved organic matter |
| title | Substances released during the decomposition of Vallisneria natans and Thalia dealbata |
| title_full | Substances released during the decomposition of Vallisneria natans and Thalia dealbata |
| title_fullStr | Substances released during the decomposition of Vallisneria natans and Thalia dealbata |
| title_full_unstemmed | Substances released during the decomposition of Vallisneria natans and Thalia dealbata |
| title_short | Substances released during the decomposition of Vallisneria natans and Thalia dealbata |
| title_sort | substances released during the decomposition of vallisneria natans and thalia dealbata |
| topic | Aquatic plant Released substances Carbon sources Dissolved organic matter |
| url | http://www.sciencedirect.com/science/article/pii/S2405844022027293 |
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