期刊
BIORESOURCE TECHNOLOGY
卷 248, 期 -, 页码 44-48出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.07.081
关键词
Periphytic biofilms; Nutrient utilization; Nonpoint source pollution; Wetlands
资金
- State Key Development Program for Basic Research of China [2015CB158200]
- National Natural Science Foundation of China [41422111, 31600097]
- Natural Science Foundation (NSF) of Jiangsu Province, China [BK20150066]
- Hundred-Talent Program, Chinese Academy of Sciences, China
Low nutrient utilization efficiency in agricultural ecosystems is the main cause of nonpoint source (NPS) pollution. Therefore, novel approaches should be explored to improve nutrient utilization in these ecosystems. Periphytic biofilms composed of microalgae, bacteria and other microbial organisms are ubiquitous and form a 'third phase' in artificial wetlands such as paddy fields. Periphytic biofilms play critical roles in nutrient transformation between the overlying water and soil/sediment, however, their contributions to nutrient utilization improvement and NPS pollution control have been largely underestimated. This mini review summarizes the contributions of periphytic biofilms to nutrient transformation processes, including assimilating and storing bioavailable nitrogen and phosphorus, fixing nitrogen, and activating occluded phosphorus. Future research should focus on augmenting the nitrogen fixing, phosphate solubilizing and phosphatase producing microorganisms in periphytic biofilms to improve nutrient utilization and thereby reduce NPS pollution production in artificial and natural wetland ecosystems. (C) 2017 Elsevier Ltd. All rights reserved.
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