DOI: 10.1016/j.atmosenv.2014.07.038
Scopus记录号: 2-s2.0-84904738334
论文题名: Differences in CH4 and N2O emissions between rice nurseries in Chinese major rice cropping areas
作者: Zhang Y ; , Li Z ; , Feng J ; , Zhang X ; , Jiang Y ; , Chen J ; , Zhang M ; , Deng A ; , Zhang W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 220
结束页码: 228
语种: 英语
英文关键词: Climate change
; Cropping systems
; Global warming potential
; Greenhouse gas emissions
; Irrigation regime
; Rice seedling nursery
Scopus关键词: Climate change
; Floods
; Global warming
; Methane
; Cropping systems
; Global warming potential
; Irrigation regimes
; Methane emissions
; Mitigating effects
; Recent researches
; Rice cropping systems
; Rice seedling nurseries
; Greenhouse gases
; methane
; nitrogen dioxide
; agricultural emission
; environmental monitoring
; estimation method
; global warming
; methane
; nitrous oxide
; paddy field
; pollution monitoring
; article
; carbon footprint
; Chinese
; crop
; cropping system
; field emission
; greenhouse effect
; greenhouse gas
; nonhuman
; priority journal
; rice
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Studies on greenhouse gas (GHG) emissions from paddy field have primarily focused on the post-transplanting period, however, recent researches raise new concerns about GHGs emission from rice nursery. In this study, CH4 and N2O fluxes were determined from different nurseries under major rice cropping systems in China. The tested nurseries included flooded nursery (FN), moist nursery (MN) and dry nursery (DN). Methane emissions from FN were significantly higher than those from MN and DN under all the rice cropping systems. When comparing with FN, MN decreased total CH4 emissions by 74.2%, 72.1% and 49.6% under the rice-upland rotation cropping system (RUR), and the double rice cropping system for the early rice (EDR) and the late rice (LDR), respectively. DN decreased CH4 emissions by 99.2%, 92.0%, 99.0% and 78.6% compared to FN under the single rice cropping system (SR), RUR, EDR and LDR, respectively. When comparing with FN, MN and DN increased N2O emissions by 58.1-134.1% and 28.2-332.7%, respectively. Ultimately, compared with FN across the cropping systems, MN and DN decreased net global warming potentials (GWPs) of CH4 and N2O by 33-68% and 43-86%, respectively. The mitigating effect of MN and DN on total GWPs varied greatly across the systems, ranging from 30.8% in the LDR to 86.5% in the SR. Chinese actual emission from rice nurseries was reduced to 956.66×103tCO2eq from the theoretical estimate of 2242.59×103tCO2eq if under the flooded nursery scenario in 2012. Taking into account the large rice nursery area (2032.52×103ha) in China, the results of this study clearly indicate the importance to estimate and mitigate GHGs emission from flooded rice nursery. Being effective to reduce GHG emissions and increase rice yield, dry nursery technique is a promising candidate for climate smart rice cropping. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81198
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Institute of Applied Ecology, Nanjing Agricultural University, Nanjing 210095, China; Institute of Crop Science, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture, Beijing 100081, China; China National Rice Research Institution, Hangzhou 310006, China; Soil and Fertilizer and Resources and Environmental Institute, Jiangxi Academy of Agricultural Science, Nanchang 330200, China
Recommended Citation:
Zhang Y,, Li Z,, Feng J,et al. Differences in CH4 and N2O emissions between rice nurseries in Chinese major rice cropping areas[J]. Atmospheric Environment,2014-01-01,96