潮汐作用对黄河三角洲盐沼湿地甲烷排放的影响
Alternative TitleEffects of tidal action on methane emissions over a salt marsh in the Yellow River Delta, China
贺文君; 韩广轩; 宋维民; 李培广; 张树岩; 张希涛
Source Publication生态学报
ISSN1000-0933
2019
Volume39Issue:17Pages:6238-6246
Keyword甲烷 潮汐作用 干湿循环 盐沼湿地 Methane Tidal Action Drying And Wetting Cycles Salt Marsh
MOST Discipline CatalogueLife Sciences & Biomedicine - Other Topics
Contribution Rank

(1) 中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室

; (2) 中国科学院大学; (3) 山东省黄河三角洲国家级自然保护区
Department海岸带环境过程实验室
Abstract

Salt marshes are coastal wetlands that are considered to be a potential natural source of methane ( CH_4 ). By controlling the production, oxidation, and transport of CH_4 in soils, tidal action drives the episodic and high-magnitude emissions of CH_4 from coastal wetlands. Using the eddy covariance technique, we measured the CH_4 fluxes, environmental factors,and tidal dynamics in a salt marsh in the Yellow River Delta in China. We aimed to investigate the dynamics of CH_4 emissions in the growing season and to analyze the effect of tidal action on CH_4 emission. The results showed that the mean daily methane was 0.063 mg m~(-2) h~(-1),ranging from -0.36 to 0.57 mg m~(-2) h~(-1),during the growing season. Tidal flooding and the wet stage after tides are the significant sources of CH_4. Drying and wetting cycles induced by short-term tides resulted in pulsed CH_4 emissions. Therefore, the soil drought and wetting induced by increasing temperatures and precipitation distribution under climate change will positively impact CH_4 emissions and the carbon cycle in the region.

Other Abstract

盐沼湿地作为陆海交互作用的过渡带是CH_4重要的自然来源。潮汐活动通过影响CH_4的产生、氧化和传输驱动了湿地CH_4间歇性、周期性的排放。利用涡度相关和微气象监测技术,对黄河三角洲一个盐地碱蓬生态系统CH_4通量、环境因子和水文要素(潮汐)进行了长期连续监测分析了该生态系统生长季CH_4排放的季节动态及潮汐作用对CH_4排放的影响。结果表明:生长季该生态系统是CH_4的排放源,排放日均值为0.063 mg m~(-2) h~(-1),(范围为-0.360.57 mg m~(-2) h~(-1))。潮汐淹水阶段和落潮后湿润阶段表现为CH_4的显著源。此外我们发现,短期潮汐活动引起土壤干湿状况的变化促进了CH_4脉冲式的排放,因此未来气候变化下温度升高和降雨季节分配引起的土壤干湿变化将会对该区域CH_4排放甚至碳循环产生积极影响。

Indexed ByCSCD
Language中文
WOS Keyword甲烷 ; 潮汐作用 ; 干湿循环 ; 盐沼湿地 ; Methane ; Tidal Action ; Drying And Wetting Cycles ; Salt Marsh
WOS Research AreaLife Sciences & Biomedicine - Other Topics
CSCD IDCSCD:6581198
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/25136
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Affiliation1.中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室;
2.中国科学院大学;
3.山东省黄河三角洲国家级自然保护区
Recommended Citation
GB/T 7714
贺文君,韩广轩,宋维民,等. 潮汐作用对黄河三角洲盐沼湿地甲烷排放的影响[J]. 生态学报,2019,39(17):6238-6246.
APA 贺文君,韩广轩,宋维民,李培广,张树岩,&张希涛.(2019).潮汐作用对黄河三角洲盐沼湿地甲烷排放的影响.生态学报,39(17),6238-6246.
MLA 贺文君,et al."潮汐作用对黄河三角洲盐沼湿地甲烷排放的影响".生态学报 39.17(2019):6238-6246.
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