Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 801, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.149708
Keywords
3D EEM; PARAFAC; Biomass decomposition; Paddy soil
Categories
Funding
- National Natural Science Foundation of China [41977101, 41825021]
- Natural Science Foundation of Jiangsu Province, China [BK20181511, BE2020731, BK20200057]
- Chinese Academy of Sciences
Ask authors/readers for more resources
This study revealed the interactions between DOM and periphytic biofilms and their effects on changes in bioactive phosphorus fractions, providing practical information for designing periphytic biofilm based biofertilizers from the perspective of soil DOM.
Dissolved organic matter (DOM) plays vital roles in carbon and other nutrient transformation at soil-water interfaces (SWI) in paddy fields. It is associated with the growth and withering of periphytic biofilms. However, the interactions between DOM and periphytic biofilms remain largely unknown. In this study, a microcosm experiment with different initial DOM contents elucidated that the biomass, and biomass nitrogen and phosphorus contents were greatly influenced by humic-like substances (C2 and C3), while the growth of periphytic biofilms increased the contents of humic-like (C1 and C2) and tryptophan-like substances (C5) in soil. Moreover, the decomposition of periphytic biofilms significantly increased soil pH, DOM, C2, C3 and C5 contents, but caused decrease in Eh, with consequent reduce in water soluble phosphorus (WSP) and release of algal available phosphorus (AAP). Results from this study revealed how DOM interacts with periphytic biofilms and the consequent effects on changes of bioactive phosphorus fractions, and provide practical information for designing periphytic biofilm based biofertilizer from the perspective of soil DOM. (c) 2021 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available