Submerged macrophytes regulate diurnal nitrous oxide emissions from a shallow eutrophic lake: A case study of Lake Wuliangsuhai in the temperate arid region of China

水生植物 富营养化 环境科学 昼夜垂直迁移 水文学(农业) 水质 环境化学 生态学 营养物 地质学 化学 生物 岩土工程
作者
Ming Ni,Xia Liang,Lijun Hou,Weiping Li,Chi He
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:811: 152451-152451 被引量:15
标识
DOI:10.1016/j.scitotenv.2021.152451
摘要

Submerged macrophytes can increase oxygen concentrations of water and promote diel oxygen fluctuations, and this phenomenon is hypothesized to play a vital role in regulating nitrous oxide (N2O) emissions from eutrophic lakes. However, the effects of submerged macrophytes on N2O emissions in shallow eutrophic lakes remain poorly investigated. In this study, Lake Wuliangsuhai, a typical shallow eutrophic lake, was investigated to study the role of submerged macrophytes in regulating N2O emissions. We measured the N2O fluxes and related parameters through continual 72-h in situ diel monitoring in two sampling sections that covered dense submerged macrophyte areas and open water. In this study, the dissolved oxygen (DO) concentration of the water in the submerged macrophyte area exhibited significant diurnal variations, with significantly higher water oxygen concentrations than the open water area during the daytime. The N2O fluxes of Lake Wuliangsuhai ranged from 0.01 to 0.24 μmol m-2 h-1, with an average value of 0.11 μmol m-2 h-1. Moreover, significant diel variations in the N2O flux and net N2O production were observed in the submerged macrophyte areas, where the maximum N2O flux occurred at midday. The molar ratios of NH4+-N to oxygen (N/O ratio) of the water were responsible for the diel variations in the N2O production in the lake. However, the high oxygen concentration of the water was the major regulator of the N2O flux of Lake Wuliangsuhai. Therefore, submerged macrophyte restoration is significant not only for water quality improvement in shallow eutrophic lakes but also for N2O emission mitigation by increasing the DO concentration of the water.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
可爱的函函应助冷酷寒安采纳,获得10
1秒前
1秒前
今后应助洪世贤采纳,获得10
1秒前
快点毕业发布了新的文献求助30
1秒前
Dddd关注了科研通微信公众号
2秒前
利好完成签到 ,获得积分10
2秒前
领导范儿应助Dale采纳,获得10
2秒前
顾矜应助乖乖猫采纳,获得10
3秒前
huff完成签到,获得积分10
3秒前
邵邵发布了新的文献求助10
3秒前
3秒前
JamesPei应助畅快的觅风采纳,获得10
4秒前
4秒前
FFGC完成签到,获得积分10
5秒前
5秒前
5秒前
淡淡诗柳完成签到,获得积分10
6秒前
6秒前
小马甲应助yls采纳,获得10
6秒前
王三完成签到,获得积分10
7秒前
wendinfgmei发布了新的文献求助50
8秒前
Djtc完成签到,获得积分10
8秒前
8秒前
脑洞疼应助背后友蕊采纳,获得10
9秒前
9秒前
10秒前
Owen应助不敢装睡采纳,获得10
10秒前
yubin.cao完成签到,获得积分10
11秒前
Noraaa发布了新的文献求助30
11秒前
huangsan完成签到,获得积分10
11秒前
znn发布了新的文献求助10
11秒前
情怀应助Stern采纳,获得10
11秒前
郭大杠完成签到 ,获得积分10
11秒前
ziming完成签到 ,获得积分10
12秒前
LXD发布了新的文献求助10
12秒前
13秒前
研友_VZG7GZ应助严锦强采纳,获得10
14秒前
Mars_1108发布了新的文献求助10
14秒前
豆子应助稳重向南采纳,获得20
14秒前
平淡惋清完成签到,获得积分10
14秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3974797
求助须知:如何正确求助?哪些是违规求助? 3519250
关于积分的说明 11197623
捐赠科研通 3255405
什么是DOI,文献DOI怎么找? 1797769
邀请新用户注册赠送积分活动 877156
科研通“疑难数据库(出版商)”最低求助积分说明 806202