Diurnal dynamics of CH4, CO2 and N2O fluxes in the saline-alkaline soils of the Yellow River Delta, China

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 海岸带生物学与生物资源利用重点实验室 > 海岸带生物学与生物资源利用所重点实验室

	Diurnal dynamics of CH4, CO2 and N2O fluxes in the saline-alkaline soils of the Yellow River Delta, China
	Zhang, LH; Song, LP; Zhang, LW; Shao, HB
刊名	PLANT BIOSYSTEMS
	2015-07-04
卷号	149 期号:4 页码:797-805
关键词	Greenhouse gas Yellow River Delta saline-alkaline soils carbon dioxide vegetation nitrous oxide
ISSN号	1126-3504
通讯作者	Shao, HB (reprint author), Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China. shaohongbochu@126.com
产权排序	[Zhang, L. H.; Song, L. P.; Zhang, L. W.; Shao, H. B.] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Beijing 100864, Peoples R China; [Zhang, L. H.; Song, L. P.; Zhang, L. W.; Shao, H. B.] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Beijing 100864, Peoples R China; [Shao, H. B.] Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China; [Song, L. P.] Chinese Acad Sci, Grad Univ, Beijing 100864, Peoples R China
中文摘要	Salt-affected soils are extensively present and constitute about 7% of total land surface. However, our knowledge about greenhouse gas (GHG) turnover between the atmosphere and the saline soils is very limited. In order to evaluate the potential of GHG consumption in saline soils, we measured gas fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) from the soil surface to the atmosphere under saline-alkaline mudflat and various community types in the Yellow River Delta in China. In general, the emissions of GHG of different ecosystems showed a unique peak diurnal pattern, with the peak at 13:00h and the lowest value at 07:00h. The CH4 and N2O emission of different ecosystems followed the order: saline-alkaline mudflat>T. chinensis>S. salsa>P. australis, while the CO2 emission followed the order: T. chinensis>P. australis>S. salsa >saline-alkaline mudflat. On the whole, saline-alkaline mudflat and different vegetations acted as CO2 and N2O source in spring, while saline-alkaline mudflat and P. australis communities acted as CH4 source and CH4 sink, respectively. However, T. chinensis and S. salsa communities acted as CH4 sink before 12:00h and CH4 source after 12:00h. Although measurements of the CO2, CH4 and N2O fluxes were taken simultaneously, CH4 and N2O fluxes were strongly correlated with soil moisture, temperature and electrical conductivity, while no significant correlation was found between CO2 flux with above environmental factors. These results probably suggest that factors other than soil temperature, moisture and salinity exerted a larger impact on fluxes than on CH4 and N2O release and/or that there were not enough samples for CO2 flux measurements because of its higher spatial and temporal variability.
英文摘要	Salt-affected soils are extensively present and constitute about 7% of total land surface. However, our knowledge about greenhouse gas (GHG) turnover between the atmosphere and the saline soils is very limited. In order to evaluate the potential of GHG consumption in saline soils, we measured gas fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) from the soil surface to the atmosphere under saline-alkaline mudflat and various community types in the Yellow River Delta in China. In general, the emissions of GHG of different ecosystems showed a unique peak diurnal pattern, with the peak at 13:00h and the lowest value at 07:00h. The CH4 and N2O emission of different ecosystems followed the order: saline-alkaline mudflat>T. chinensis>S. salsa>P. australis, while the CO2 emission followed the order: T. chinensis>P. australis>S. salsa >saline-alkaline mudflat. On the whole, saline-alkaline mudflat and different vegetations acted as CO2 and N2O source in spring, while saline-alkaline mudflat and P. australis communities acted as CH4 source and CH4 sink, respectively. However, T. chinensis and S. salsa communities acted as CH4 sink before 12:00h and CH4 source after 12:00h. Although measurements of the CO2, CH4 and N2O fluxes were taken simultaneously, CH4 and N2O fluxes were strongly correlated with soil moisture, temperature and electrical conductivity, while no significant correlation was found between CO2 flux with above environmental factors. These results probably suggest that factors other than soil temperature, moisture and salinity exerted a larger impact on fluxes than on CH4 and N2O release and/or that there were not enough samples for CO2 flux measurements because of its higher spatial and temporal variability.
研究领域[WOS]	Plant Sciences
关键词[WOS]	GREENHOUSE-GAS EMISSIONS ; OLD-GROWTH FORESTS ; FAGUS-SYLVATICA L. ; NITROUS-OXIDE ; SEASONAL-VARIATION ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; EXCHANGE ; RESPIRATION ; AUSTRALIA
收录类别	SCI
语种	英语
WOS记录号	WOS:000361690200014
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/9996]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室烟台海岸带研究所_滨海湿地实验室
推荐引用方式 GB/T 7714	Zhang, LH,Song, LP,Zhang, LW,et al. Diurnal dynamics of CH4, CO2 and N2O fluxes in the saline-alkaline soils of the Yellow River Delta, China[J]. PLANT BIOSYSTEMS,2015,149(4):797-805.
APA	Zhang, LH,Song, LP,Zhang, LW,&Shao, HB.(2015).Diurnal dynamics of CH4, CO2 and N2O fluxes in the saline-alkaline soils of the Yellow River Delta, China.PLANT BIOSYSTEMS,149(4),797-805.
MLA	Zhang, LH,et al."Diurnal dynamics of CH4, CO2 and N2O fluxes in the saline-alkaline soils of the Yellow River Delta, China".PLANT BIOSYSTEMS 149.4(2015):797-805.