干旱区生态环境知识资源中心(Arid): 2013年乌梁素海湖滨带土壤植物系统甲烷和一氧化二氮通量及生态系统总呼吸研究

Arid

	2013年乌梁素海湖滨带土壤植物系统甲烷和一氧化二氮通量及生态系统总呼吸研究
其他题名	Fluxes of Methane and Nitrous Oxide and Total Ecosystem Respiration of Soil and Plant System in Lakeshore ofWuliangsu Lake in 2013
	王立新 1; 吴忠伟 1; 刘华民 2; 刘东伟 1; 卓义 1; 清华 1; 温璐 1; 李智勇 2; 梁存柱 2; 梅宝玲 1
来源期刊	湿地科学
ISSN	1672-5948
出版年	2016
卷号	14 期号:6 页码:763-772
中文摘要	作为中国八大淡水湖之一的内蒙古自治区乌梁素海,它是全球范围内干旱草原、荒漠地区极为少见的大型多功能湖泊湿地。利用静态暗箱气相色谱法,于2013年6月末至11月中旬期间,每逢周末对乌梁素海湖滨带岸上白刺(Nitraria tangutorum)群落近岸碱蓬(Suaeda salsa)群落湖中芦苇(Phragmites australis)群落区土壤植物系统CH_4和N_2O排放通量、生态系统总呼吸及相关环境变量(包括5 cm深度土壤温度、0~6 cm深度土壤湿度、0~10 cm深度土壤铵态氮含量和硝态氮含量、土壤溶解性有机碳含量)进行了观测。研究结果表明,观测期间,乌梁素海湖滨带土壤植物系统整体上是CH_4排放源;8月和9月土壤植物系统为N_2O的汇,其它月份为N_2O的源;各植物群落区土壤植物系统的CH_4通量、生态系统总呼吸都分别与5 cm深度土壤温度显著相关,芦苇群落区和碱蓬群落区土壤植物系统的N_2O通量与5 cm深度土壤温度显著相关;当湿地土壤湿度减小时,土壤产生的CH_4易被氧化层氧化,导致其CH_4产量降低,而此时N_2O通量增加,另外土壤湿度对生态系统总呼吸也有显著影响;随着土壤铵态氮含量的增加,各植物群落区土壤植物系统的CH_4通量在减小,芦苇群落区和碱蓬群落区土壤植物系统的N_2O通量与土壤硝态氮含量显著正相关;各植物群落区土壤植物系统的CH_4通量与土壤溶解性有机碳含量显著正相关,芦苇群落区土壤植物系统的生态系统总呼吸与土壤溶解性有机碳含量显著正相关。
英文摘要	Wuliangsu Lake in Inner Mongolia Autonomous Region, China, as one of the eight largest freshwater lakes in China, is a rare large multi-functional lake in the arid steppe and desert area in the world. so this study, Using the static chamber and gas chromatogram methods, the observed fluxes of methane and nitrous oxide, total ecosystem respiration and the related environmental variables (including the soil temperature of 5 cm depth, the soil moisture of 6 cm depth, the contents of NO_3~--N and the NH_4~+-N in soil of 10 cm depth, the content of dissolved organic carbon of 10 cm depth) in the lakeshore with different plant communities along Wuliangsu Lake from June to November 2013. From land to the lake, the plant communities were Nitraria tangutorum community, Suaeda salsa community and Phragmites australis community in the lakeshore. The results showed that the methane and nitrous oxide fluxes and total ecosystem respiration along the lakeshore of Wuliangsu Lake had obvious temporal variations. These effects led to very significant correlations between methane and nitrous oxide fluxes, total ecosystem respiration and soil temperature. When the moisture of the soil in the wetlands decreased, methane was susceptible to be oxidized in the oxidative layer of soil, resulting in the methane production to be lower; simultaneously, the nitrous oxide fluxes increased. The soil moisture also had a significant influence on total ecosystem respiration. The input of exogenous nitrogen influenced the production and oxidation of methane in soil, and thereby influenced the methane emissions, while through the soil nitrification and denitrification to nitrous oxide emissions. In this study, there were significant correlations between methane fluxes, nitrous oxide fluxes and the contents of NO_3~--N and NH_4~+-N. The exchanging fluxes of methane and the total ecosystem respiration were also related to the content of dissolved organic carbon significantly.
中文关键词	甲烷 ; 一氧化二氮 ; 通量 ; 生态系统总呼吸 ; 湖滨带 ; 乌梁素海
英文关键词	methane nitrous oxide flux total ecosystem respiration lakeshore Wuliangsu Lake
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5893932
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234889
作者单位	1.内蒙古大学环境与资源学院, 呼和浩特, 内蒙古 010021, 中国; 2.内蒙古大学生命科学学院, 呼和浩特, 内蒙古 010021, 中国
推荐引用方式 GB/T 7714	王立新,吴忠伟,刘华民,等. 2013年乌梁素海湖滨带土壤植物系统甲烷和一氧化二氮通量及生态系统总呼吸研究[J],2016,14(6):763-772.
APA	王立新.,吴忠伟.,刘华民.,刘东伟.,卓义.,...&梅宝玲.(2016).2013年乌梁素海湖滨带土壤植物系统甲烷和一氧化二氮通量及生态系统总呼吸研究.湿地科学,14(6),763-772.
MLA	王立新,et al."2013年乌梁素海湖滨带土壤植物系统甲烷和一氧化二氮通量及生态系统总呼吸研究".湿地科学 14.6(2016):763-772.