[1]严 岩,吴懿婷,周川乔,等.不同聚集厚度藻类分解过程对温室气体释放的影响[J].南京师大学报(自然科学版),2022,(02):142-148.[doi:10.3969/j.issn.1001-4616.2022.02.018]
 Yan Yan,Wu Yiting,Zhou Chuanqiao,et al.Effects of Algal Decomposition Processes on Greenhouse Gas Emission at Different Aggregation Thicknesses[J].Journal of Nanjing Normal University(Natural Science Edition),2022,(02):142-148.[doi:10.3969/j.issn.1001-4616.2022.02.018]
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不同聚集厚度藻类分解过程对温室气体释放的影响()
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《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

卷:
期数:
2022年02期
页码:
142-148
栏目:
·环境科学与工程·
出版日期:
2022-05-15

文章信息/Info

Title:
Effects of Algal Decomposition Processes on Greenhouse Gas Emission at Different Aggregation Thicknesses
文章编号:
1001-4616(2022)02-0142-07
作者:
严 岩1吴懿婷2周川乔2马 天2许晓光2邓 杨2
(1.江苏省环境科学研究院,江苏 南京 210036)(2.南京师范大学环境学院,江苏 南京 210023)
Author(s):
Yan Yan1Wu Yiting2Zhou Chuanqiao2Ma Tian2Xu Xiaoguang2Deng Yang2
(1.Jiangsu Provincial Academy of Environmental Science,Nanjing 210036,China)(2.School of Environment,Nanjing Normal University,Nanjing 210023,China)
关键词:
藻类温室气体
Keywords:
algaecarbonnitrogenphosphorusgreenhouse gases
分类号:
X524
DOI:
10.3969/j.issn.1001-4616.2022.02.018
文献标志码:
A
摘要:
为了明确富营养化浅水湖泊中不同聚集厚度藻类分解过程对碳、氮和磷的产生及温室气体释放的影响,本研究通过室内模拟的方法,研究了不同聚集厚度(3 cm、5 cm、10 cm、15 cm和20 cm)藻类衰亡分解过程中碳、氮和磷的迁移特征及温室气体产生的规律. 结果表明,在藻类衰亡分解过程中,藻聚集厚度20 cm时水体溶解性有机碳(TOC)浓度值最高; 同时,随着藻类聚集厚度的增加,各处理组中总氮(TN)、总磷(TP)和铵态氮(NH+4-N)的浓度均表现出先上升后下降的趋势. 气态碳以 CH4和CO2形式排放到大气中,培养结束时,藻聚集厚度20 cm处理组中CH4和CO2排放通量最大,分别为58.85 mg·m-2·h-1和489.18 mg·m-2·h-1; 此外,N2O的排放通量随着藻聚集厚度的增加而增加. 实验过程中,水体中NH+4-N与各处理组CO2、CH4和N2O的排放通量均显著相关(P<0.05). 本研究揭示了藻类聚集厚度与水体中碳、氮、磷的浓度及CO2、CH4和N2O 3种温室气体释放呈显著正相关关系,且能在一定程度上加速湖泊富营养化.
Abstract:
In order to clarify the effects of algae decomposition processes with different aggregation thicknesses on carbon,nitrogen,phosphorus production,and greenhouse gas emission in eutrophic shallow lakes,the migration characteristics of carbon,nitrogen,and phosphorus and the rules of greenhouse gas production during the decay and decomposition of algae with different aggregation thicknesses(3 cm,5 cm,10 cm,15 cm and 20 cm)were studied by indoor simulation. The results showed that the concentration of dissolved organic carbon(TOC)was the highest when the thickness of algae was 20 cm. At the same time,the concentrations of total nitrogen(TN),total phosphorus(TP),and ammonium nitrogen(NH+4-N)in each treatment group increased firstly and then decreased with the increase of algae aggregation thickness. Gaseous carbon was discharged into the atmosphere in the form of CH4 and CO2. At the end of culture,the CH4 and CO2 emission fluxes were the highest in the 20 cm algae aggregation thickness group,which were 58.85 mg·m-2·h-1 and 489.18 mg·m-2·h-1,respectively. In addition,the emission fluxes of N2O increased with the increase of algal aggregation thickness. During the experiment,NH+4-N in water was significantly correlated with the emission fluxes of CO2,CH4,and N2O in each treatment group(P<0.05). This study revealed that the concentration of carbon,nitrogen,and phosphorus in water and the release of CO2,CH4,and N2O greenhouse gases were significantly positively correlated with the thickness of algae aggregation,and could accelerate lake eutrophication to a certain extent.

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备注/Memo

备注/Memo:
基金项目:国家水体污染控制与治理科技重大专项(2017ZX07203-003)、国家自然科学基金青年基金资助项目(41907350)、江苏省普通高校研究生科研创新计划项目(KYCX21_1397).
通讯作者:邓杨,博士,研究方向:气候变化与浅水湖泊生物地球化学. E-mail:15651922179@163.com
更新日期/Last Update: 1900-01-01