Methane emission by plant communities in an alpine meadow on the Qinghai-Tibetan Plateau: a new experimental study of alpine meadows and oat pasture

NWIPB OpenIR

	Methane emission by plant communities in an alpine meadow on the Qinghai-Tibetan Plateau: a new experimental study of alpine meadows and oat pasture
	Wang, Shiping 1; Yang, Xiaoxia 1,2; Lin, Xingwu 3; Hu, Yigang 1,2; Luo, Caiyun 1,2; Xu, Guangping 1,2; Zhang, Zhenhua 1,2; Su, Ailing 1,2; Chang, Xiaofen 1,2; Chao, Zengguo 1,2; Duan, Jichuang 1,2
	2009-08-23
发表期刊	BIOLOGY LETTERS
ISSN	1744-9561
卷号	5 期号:4 页码:535-538
文章类型	Article
摘要	Recently, plant-derived methane (CH(4)) emission has been questioned because limited evidence of the chemical mechanism has been identified to account for the process. We conducted an experiment with four treatments (i.e. winter-grazed, natural alpine meadow; naturally restored alpine meadow eight years after cultivation; oat pasture and bare soil without roots) during the growing seasons of 2007 and 2008 to examine the question of CH(4) emission by plant communities in the alpine meadow. Each treatment consumed CH(4) in closed, opaque chambers in the field, but two types of alpine meadow vegetation reduced CH(4) consumption compared with bare soil, whereas oat pasture increased consumption. This result could imply that meadow vegetation produces CH(4). However, measurements of soil temperature and water content showed significant differences between vegetated and bare soil and appeared to explain differences in CH(4) production between treatments. Our study strongly suggests that the apparent CH(4) production by vegetation, when compared with bare soil in some previous studies, might represent differences in soil temperature and water-filled pore space and not the true vegetation sources of CH(4).; Recently, plant-derived methane (CH4) emission has been questioned because limited evidence of the chemical mechanism has been identified to account for the process. We conducted an experiment with four treatments (i.e. winter-grazed, natural alpine meadow; naturally restored alpine meadow eight years after cultivation; oat pasture and bare soil without roots) during the growing seasons of 2007 and 2008 to examine the question of CH4 emission by plant communities in the alpine meadow. Each treatment consumed CH4 in closed, opaque chambers in the field, but two types of alpine meadow vegetation reduced CH4 consumption compared with bare soil, whereas oat pasture increased consumption. This result could imply that meadow vegetation produces CH4. However, measurements of soil temperature and water content showed significant differences between vegetated and bare soil and appeared to explain differences in CH4 production between treatments. Our study strongly suggests that the apparent CH4 production by vegetation, when compared with bare soil in some previous studies, might represent differences in soil temperature and water-filled pore space and not the true vegetation sources of CH4.
关键词	Ch4 Consumption By Alpine Ecosystem Ch4 Emission By Plant Community Soil Temperature Soil Moisture Land-use Change
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	TERRESTRIAL PLANTS ; ATMOSPHERIC METHANE ; ULTRAVIOLET-RADIATION ; INNER-MONGOLIA ; CONSUMPTION ; PECTIN ; CARBON ; SOILS
收录类别	SCI
语种	英语
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000267881700028
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1834
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci Nanjing, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shiping,Yang, Xiaoxia,Lin, Xingwu,et al. Methane emission by plant communities in an alpine meadow on the Qinghai-Tibetan Plateau: a new experimental study of alpine meadows and oat pasture[J]. BIOLOGY LETTERS,2009,5(4):535-538.
APA	Wang, Shiping.,Yang, Xiaoxia.,Lin, Xingwu.,Hu, Yigang.,Luo, Caiyun.,...&Duan, Jichuang.(2009).Methane emission by plant communities in an alpine meadow on the Qinghai-Tibetan Plateau: a new experimental study of alpine meadows and oat pasture.BIOLOGY LETTERS,5(4),535-538.
MLA	Wang, Shiping,et al."Methane emission by plant communities in an alpine meadow on the Qinghai-Tibetan Plateau: a new experimental study of alpine meadows and oat pasture".BIOLOGY LETTERS 5.4(2009):535-538.