Arid
DOI10.1016/j.jenvman.2023.119093
Significant methane ebullition from large shallow eutrophic lakes of the semi-arid region of northern China
Zhang, Linxiang; Li, Xiangwei; Yu, Ruihong; Geng, Yue; Sun, Liangqi; Sun, Heyang; Li, Yuan; Zhang, Zhonghua; Zhang, Xiangyu; Lei, Xue; Wang, Rui; Lu, Changwei; Lu, Xixi
通讯作者Yu, RH
来源期刊JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
EISSN1095-8630
出版年2023
卷号347
英文摘要Eutrophic lakes are a major source of the atmospheric greenhouse gas methane (CH4), and CH4 ebullition emissions from inland lakes have important implications for the carbon cycle. However, the spatio-temporal heterogeneity of CH4 ebullition emission and its influencing factors in shallow eutrophic lakes of arid and semi-arid regions remain unclear. This study aimed to determine the mechanism of CH4 emission via eutrophication in Lake Ulansuhai, a large shallow eutrophic lake in a semi-arid region of China.To this end, monthly field surveys were conducted from May to October 2021, and gas chromatography was applied using the headspace equilibrium technique with an inverted funnel arrangement. The total CH4 fluxes ranged from 0.102 mmol m(-2) d(-1) to 59.296 mmol m(-2) d(-1) with an average value of 4.984 +/- 1.82 mmol m(-2) d(-1). CH4 ebullition emissions showed significant temporal and spatial variations. The highest CH4 ebullition emission was observed in July with a grand mean of 9.299 mmol m(-2) d(-1), and the lowest CH4 ebullition emissions occurred in October with an average of 0.235 mmol m(-2) d(-1). Among seven sites (S1-S7), the maximum (3.657 mmol m(-2) d(-1)) and minimum (1.297 mmol m(-2) d(-1)). CH4 ebullition emissions were observed at S2 and S7, respectively. As the main route of CH4 emission to the atmosphere in Lake Ulansuhai, the CH4 ebullition flux during May to October accounted for 69% of the total CH4 flux. Statistical analysis showed that CH4 ebullition was positively correlated with temperature (R = 0.391, P < 0.01) and negatively correlated with air pressure (R = 0.286, P < 0.00). Temperature and air pressure were found to strongly regulate the production and oxidation of CH4. Moreover, nutritional status indicators such as TP and NH4+-N significantly affect CH4 ebullition emissions (R = 0.232, P < 0.01; R = -0.241, P < 0.01). This study reveals the influencing factors of CH4 ebullition emission in Lake Ulansuhai, and provides theoretical reference and data support for carbon emission from eutrophic lakes. Nevertheless, research on eutrophic shallow lakes needs to be further strengthened. Future research should incorporate improved flux measurement techniques with process-based models to improve the accuracy from regional to large-scale estimation of CH4 emissions and clarify the carbon budget of aquatic ecosystems. In this manner, the understanding and predictability of CH4 ebullition emission from shallow lakes can be improved.
英文关键词Eutrophication CH4 flux Ebullition emission Temporal and spatial variations Lake Ulansuhai
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:001092952000001
WOS关键词GREENHOUSE-GAS EMISSIONS ; CARBON-DIOXIDE EMISSIONS ; SPATIAL VARIATION ; BOREAL LAKES ; FLUXES ; TEMPERATURE ; OXIDATION ; SEDIMENTS ; RESERVOIR ; PONDS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/397300
推荐引用方式
GB/T 7714
Zhang, Linxiang,Li, Xiangwei,Yu, Ruihong,et al. Significant methane ebullition from large shallow eutrophic lakes of the semi-arid region of northern China[J],2023,347.
APA Zhang, Linxiang.,Li, Xiangwei.,Yu, Ruihong.,Geng, Yue.,Sun, Liangqi.,...&Lu, Xixi.(2023).Significant methane ebullition from large shallow eutrophic lakes of the semi-arid region of northern China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,347.
MLA Zhang, Linxiang,et al."Significant methane ebullition from large shallow eutrophic lakes of the semi-arid region of northern China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 347(2023).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhang, Linxiang]的文章
[Li, Xiangwei]的文章
[Yu, Ruihong]的文章
百度学术
百度学术中相似的文章
[Zhang, Linxiang]的文章
[Li, Xiangwei]的文章
[Yu, Ruihong]的文章
必应学术
必应学术中相似的文章
[Zhang, Linxiang]的文章
[Li, Xiangwei]的文章
[Yu, Ruihong]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。