Land use legacies and nitrogen fertilization affect methane emissions in the early years of rice field development
Shao, R; Xu, M; Li, RQ; Dai, XQ; Liu, LX; Yuan, Y; Wang, HM; Yang, FT
2017
Source PublicationNUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN1385-1314
Volume107Issue:3Pages:369-380
AbstractMethane (CH4) emissions are critical to greenhouse gas (GHG) management in agriculture, especially in areas growing rice (Oryza sativa). However, studies on CH4 emissions and the nitrogen (N) fertilization effect in new rice fields in subtropical regions are still scarce. In this study, we designed a split-plot field experiment in Jiangxi Province, southern China, to examine whether land-use legacies and N fertilization would influence CH4 emissions. Using static chambers and gas chromatography, we measured CH4 fluxes in a newly developed rice paddy and a 10-year-old rice paddy. We also measured climatic factors and soil chemical and physical properties to match the flux measurements. The results showed that annual CH4 emissions in the new rice plots were significantly lower than in the old rice plots regardless of N fertilization. Annual CH4 emissions increased with the land-use years of rice paddies, following the order of 1 year < 2 years < 3 years < 10 years. N fertilization significantly decreased CH4 emissions by 36.9% in the first year after the new rice plots were developed, whereas it had no significant effects on CH4 emissions in the old rice plots or the new rice plots in the second and third years. The results suggest that land-use legacies have significant effects on CH4 emissions and may influence the N fertilization effect on CH4 emissions in rice fields in subtropical regions. The findings suggest that land-use legacies should be considered in managing and estimating GHG emissions in rice-growing regions.
SubtypeJournal
KeywordLand use change Land-use years CH4 Subtropical region China
Subject AreaAgriculture
WOS Subject ExtendedSoil Science
WOS KeywordGREENHOUSE-GAS EMISSIONS ; SOUTHEAST CHINA ; WATER REGIME ; PADDY FIELD ; SOIL ; SYSTEMS ; OXIDATION ; CH4 ; MANAGEMENT ; PLANTS
Indexed BySCI
Language英语
WOS IDWOS:000400234100006
PublisherSPRINGER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44080
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Shao, R,Xu, M,Li, RQ,et al. Land use legacies and nitrogen fertilization affect methane emissions in the early years of rice field development[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2017,107(3):369-380.
APA Shao, R.,Xu, M.,Li, RQ.,Dai, XQ.,Liu, LX.,...&Yang, FT.(2017).Land use legacies and nitrogen fertilization affect methane emissions in the early years of rice field development.NUTRIENT CYCLING IN AGROECOSYSTEMS,107(3),369-380.
MLA Shao, R,et al."Land use legacies and nitrogen fertilization affect methane emissions in the early years of rice field development".NUTRIENT CYCLING IN AGROECOSYSTEMS 107.3(2017):369-380.
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