DOI: 10.1016/j.atmosenv.2014.09.029
Scopus记录号: 2-s2.0-84907170218
论文题名: Comparison of three models for simulating N2O emissions from paddy fields under water-saving irrigation
作者: Wu X ; , Zhang A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 98 起始页码: 500
结束页码: 509
语种: 英语
英文关键词: Models
; N2O emission
; Paddy fields
; Water-saving irrigation
Scopus关键词: Paddy fields
; Three models
; Water-saving irrigation
; Models
; nitrous oxide
; agricultural emission
; comparative study
; crop rotation
; irrigation system
; nitrous oxide
; paddy field
; soil moisture
; soil temperature
; agricultural management
; Article
; comparative study
; Crop DNDC model
; DAYCENT model
; denitrification
; irrigation (agriculture)
; model
; nitrification
; nitrous oxide emission
; prediction
; rice
; rotation
; seasonal variation
; simulation
; soil moisture
; soil temperature
; Student t test
; Water and Nitrogen Management Model
; water saving irrigation
; wheat
; China
; Jiangsu
; Kunshan
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: N2O emissions simulated by WNMM, DAYCENT and Crop-DNDC models were compared to the observed data sets from rice-wheat rotation systems under water-saving irrigation at Kunshan City, Jiangsu Province, China. On the basis of the correlation and paired t-test for evaluation, the simulation of N2O emission by Crop-DNDC and WNMM models provided better agreement with the observed data than by DAYCENT model. The daily time step, Crop-DNDC model was consistently the best for predicting daily N2O emissions (R2 = 0.892, n = 28, p > 0.05), and WNMM model performed better (R2 = 0.87, n = 28, p > 0.05). The Crop-DNDC model simulated the seasonal cumulative N2O emissions were the closest to the measured value of 1.07 kg N ha-1, and WNMM and DAYCENT models predicted 8.4% and 15.0% more N2O emissions than that in field experiments. The three models predicted well the seasonal cycle of soil temperature, soil moisture and could provide reliable estimations. The simulation of daily average soil temperature at 10 cm were consistently with the field observed data, which by Crop-DNDC (R2 = 0.92, n = 67, p > 0.05) and WNMM (R2 = 0.91, n = 67, p > 0.05). The comparison of observed to simulated results indicated that soil WFPS was simulated by Crop-DNDC (R2 = 0.52, n = 50, p > 0.05), WNMM (R2 = 0.56, n = 50, p > 0.05) and DAYCENT (R2 = 0.37, n = 50, p > 0.05). Accurate simulation of soil moisture, soil temperature and accurate partitioning of gaseous nitrogen loss into NO, N2O and N2 are challenges for all models. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80616
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, China; College of Water Resources and oCivil Engineering, China Agricultural University, Beijing, China
Recommended Citation:
Wu X,, Zhang A. Comparison of three models for simulating N2O emissions from paddy fields under water-saving irrigation[J]. Atmospheric Environment,2014-01-01,98