周丛生物在土水界面碳氮磷元素迁移转化中的作用
The role of periphyton in the migration and transformation of carbon, nitrogen, and phosphorus elements at the soil-water interface
投稿时间:2023-05-23  修订日期:2023-07-06
DOI:
中文关键词:周丛生物  自然生物膜;氮磷  温室气体  碳同位素
英文关键词:periphyton  natural biofilms  nitrogen, phosphorus  greenhouse gases  carbon isotope
基金项目:江苏省自然科学(BK20220004);国家重点研发计划(2021YFD17008);国家自然科学(41825021, 42207447)
作者单位E-mail
李庭芳 湖南师范大学地理科学学院 tingfangli991023@163.com 
周蕾* 中国科学院南京土壤研究所 E-mail: zhoulei@issas.ac.cn 
吴永红 中国科学院南京土壤研究所 yhwu@issas.ac.cn 
韩龙飞 湖南师范大学地理科学学院 hanlf@hunnu.edu.cn 
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中文摘要:
      生长在淹水固体表面和土水界面之间的周丛生物由微藻、真菌、细菌等微生物群落和胞外聚合物等物质组成,它们能够相互作用形成更复杂的微生物聚集体,具有生态稳定性,直接影响土水界面之间的物质循环、能量流动和信息交换。以“periphyton”、“periphytic biofilm”、“周丛生物”和“周丛藻类”等作为主题检索词,在Web of Science(WOS)数据库和中国知网平台(CNKI)检索近五年相关文献,并通过VOSviewer软件进行共现分析。结果表明,目前关于周丛生物的研究主要集中在其对河流、湖泊、稻田等浅水生态系统中氮磷迁移转化的影响及其调控机制等方面,但对碳循环的影响研究相对较少。周丛生物生长过程通过吸收环境中的碳氮磷等元素转化为生物量,这一功能常被用于农业养分固持和污水净化;同时周丛生物富含藻类和自养微生物具有固碳功能,在其生长和凋亡过程中能通过改变土壤理化性质和微生物群落特征进而影响土壤碳矿化过程和甲烷排放,这对温室气体排放和土壤肥力固持有着重要作用。在此重点总结了周丛生物对碳氮磷生源要素迁移转化的作用及其机制,并进一步提出结合同位素分析等手段研究周丛生物对碳固定和矿化以及碳氮磷耦合机制等方面的研究展望。
英文摘要:
      Periphyton growing on submerged solid surfaces and at the soil-water interface consists of microbial communities such as microalgae, fungi, bacteria, and extracellular polymers. They can interact with each other to form more complex microbial aggregates with ecological stability and directly affect the cycling of matter, energy flow, and information exchange across the soil-water interface. Using "periphyton", "periphytic biofilm", "periphyton" and "periphyton algae" as search terms, the relevant literature was searched in the Web of Science (WOS) database and the China Knowledge Network (CNKI) platform during the last five years, and keyword co-occurrence analysis was performed using VOSviewer software. The results show that current research progress on periphyton is mainly focused on the effect of periphyton on the migration and transformation of nitrogen and phosphorus in shallow water ecosystems such as rivers, lakes, and paddy fields, and its regulatory mechanism. There are relatively few studies on the effect of periphyton on the carbon cycling.The growth process of periphyton converts elements such as carbon, nitrogen, and phosphorus from the environment into biomass through absorption, and this function is often used for agricultural nutrient retention and wastewater treatment. Additionally, periphyton is rich in algae and autotrophic microorganisms with carbon fixation functions, and can affect soil physical and chemical properties and microbial community characteristics during its growth and apoptosis process, thereby affecting soil carbon mineralization process and CH4 emissions, which plays an important role in greenhouse gas emissions and soil fertility sequestration. This paper summarizes the role of periphyton in the migration and transformation of carbon, nitrogen, and phosphorus biogenic elements and its mechanisms. This paper further proposes the prospect of studying the effect mechanisms of periphyton on carbon fixation and mineralization as well as carbon, nitrogen and phosphorus coupling by means of isotopic analysis.
李庭芳,周蕾,吴永红,韩龙飞.2024.周丛生物在土水界面碳氮磷元素迁移转化中的作用[J].水生态学杂志,45(4):28-39.
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