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Impacts and uncertainty analysis of elevated temperature and CO_2 concentration on wheat biomass
Liu Yujie; Tao Fulu
2012
Source PublicationJournal of Geographical Sciences
ISSN1009-637X
Volume22Issue:6Pages:1002
AbstractImpacts of climatic change on agriculture and adaptation are of key concern of scientific research. However, vast uncertainties exist among global climates model output, emission scenarios, scale transformation and crop model parameterization. In order to reduce these uncertainties, we integrate output results of four IPCC emission scenarios of A1 Fl, A2, B1 and B2, and five global climatic patterns of HadCM3, PCM, CGCM2, CSIR02 and ECHAM4 in this study. Based on 20 databases of future climatic change scenarios from the Climatic Research Unit (CRU), the scenario data of the climatic daily median values are generated on research sites with the global mean temperature increase of 1℃(GMT+1D), 2℃(GMT+2D) and 3℃(GMT+3D). The impact of C02 fertilization effect on wheat biomass for GMT+1D, GMT+2D and GMT+3D in China's wheat-producing areas is studied in the process model, CERES-Wheat and probabilistic forecasting method. The research results show the CO_2 fertilization effect can compensate reduction of wheat biomass with warming temperature in a strong compensating effect. Under the CO_2 fertilization effect, the rain-fed and irrigated wheat biomasses increase respectively, and the increment of biomass goes up with temperature rising. The rain-fed wheat biomass increase is greater than the irrigated wheat biomass. Without consideration of CO_2 fertilization effect, both irrigated and rain-fed wheat biomasses reduce, and there is a higher probability for the irrigated wheat biomass than that of the rain-fed wheat biomass.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/128266
Collection中国科学院地理科学与资源研究所
Affiliation中国科学院地理科学与资源研究所
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Liu Yujie,Tao Fulu. Impacts and uncertainty analysis of elevated temperature and CO_2 concentration on wheat biomass[J]. Journal of Geographical Sciences,2012,22(6):1002.
APA Liu Yujie,&Tao Fulu.(2012).Impacts and uncertainty analysis of elevated temperature and CO_2 concentration on wheat biomass.Journal of Geographical Sciences,22(6),1002.
MLA Liu Yujie,et al."Impacts and uncertainty analysis of elevated temperature and CO_2 concentration on wheat biomass".Journal of Geographical Sciences 22.6(2012):1002.
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