干旱区生态环境知识资源中心(Arid): Annual methane uptake of an artificial grassland under different grazing strategies

Arid

DOI	10.1007/s10705-022-10250-0
	Annual methane uptake of an artificial grassland under different grazing strategies
	Li, Shuai; Chen, Peng; Mei, Baoling; Yue, Hongyu; Zheng, Xunhua; Ren, Gaojie; Aruhan; Suhe
通讯作者	Mei, BL
来源期刊	NUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN	1385-1314
EISSN	1573-0867
出版年	2023
卷号	125 期号:1 页码:29-42
英文摘要	Increased grazing has led to the degradation of natural grasslands, which can be mitigated by implementing artificial grasslands. Continuous and rotational grazing are the most important and widely used grazing management strategies. However, our understanding of how diverse grazing management strategies affect methane (CH4) flux from artificial grasslands remains limited. Using a static opaque chamber and gas chromatography technique, methane fluxes and environmental factors from three grazing strategies (continuous grazing (CG), rotational grazing (RG), and ungrazed (UG)) were compared over a three-year period in an artificial grassland in a temperate semi-arid area in northern China. Our results showed that artificial grasslands are a net sink for atmospheric CH4. The sink strength was 2.0, 1.4, and 1.6 kg C ha(-1) yr(-1) for UG, CG, and RG, respectively. Grazing reduced CH4 uptake by 28-42% for CG and 18-32% for RG, compared to UG. However, there was no significant difference in CH4 uptake between CG and RG. CH4 uptake during the non-growing season accounted for 32-34% of the annual CH4 uptake, a significant proportion of the annual total. CH4 uptake increased with soil temperature for CG, RG, and UG and was significantly correlated with water-filled pore space for CG and UG over the three-year period. Variations in soil ammonium and nitrate levels exhibited a slight influence on CH4 flux for CG and RG. Our study provides long-term observations of grazing strategies affecting CH4 uptake in grasslands, facilitating evaluation of the effects on grassland CH4 uptake from rotational grazing and continuous grazing.
英文关键词	CH4 flux Artificial grasslands Grazing strategies Semi-arid region Non-growing season
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000900066800001
WOS关键词	NITROUS-OXIDE ; N2O FLUXES ; SOIL ; CH4 ; CARBON ; EMISSIONS ; STEPPE ; CO2 ; VEGETATION ; ECOSYSTEM
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397927
推荐引用方式 GB/T 7714	Li, Shuai,Chen, Peng,Mei, Baoling,et al. Annual methane uptake of an artificial grassland under different grazing strategies[J],2023,125(1):29-42.
APA	Li, Shuai.,Chen, Peng.,Mei, Baoling.,Yue, Hongyu.,Zheng, Xunhua.,...&Suhe.(2023).Annual methane uptake of an artificial grassland under different grazing strategies.NUTRIENT CYCLING IN AGROECOSYSTEMS,125(1),29-42.
MLA	Li, Shuai,et al."Annual methane uptake of an artificial grassland under different grazing strategies".NUTRIENT CYCLING IN AGROECOSYSTEMS 125.1(2023):29-42.