Chinese Journal of Agrometeorology ›› 2014, Vol. 35 ›› Issue (01): 1-9.doi: 10.3969/j.issn.1000-6362.2014.01.001

• 论文 •     Next Articles

Change of Climatic Resources and Potential Productivity During the Entire Growth
Period of Winter Wheat Under Future Climate Scenario in Sichuan Basin

PANG Yan mei, CHEN Chao, PAN Xue biao;LIU Yan yan   

  1. 1Institute of Plateau Meteorology, China Meteorological Administration, Chengdu610072, China;2College of Resources and Environment,China Agricultural University, Beijing100193;3Sichuan Climate Center, Chengdu610072;4College of Atmospheric Science & Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu 610225
  • Received:2013-06-14 Online:2014-02-20 Published:2015-02-10

Abstract: Based on the daily data of A2 and B2 climate scenario (2071-2100) and baseline climate condition (1961-1990) from the regional climate model PRECIS, the spatial and temporal change characteristics of the climate resources (thermal time≥0℃,sunshine hours, precipitation,reference crop evapotranspiration and water deficient ratio) during winter wheat growing periods and potential productivity (photosynthetic potential productivity, photo temperature potential productivity and climatic potential productivity) of winter wheat in Sichuan basin were calculated and analyzed according to the methods recommended by FAO and Hou guang liang.The results showed that the thermal time≥0℃, sunshine hours and reference crop evapotranspiration during the entire growth period of winter wheat would increase from 2071 to 2100 under A2 and B2 climate scenario compared with the baseline climate conditions from 1961 to 1990 in most regions of Sichuan basin.The precipitation would decrease from 2071 to 2100 under A2 climate scenario in Mianyang and south regions of Sichuan basin,but for the other regions appeared increasing tendency.The precipitation would decrease from 2071 to 2100 under B2 climate scenario in most regions of Sichuan basin, but for the individual regions appeared increasing tendency.The water deficient ratio of winter wheat showed increasing tendency in the future,  indicated that the winter wheat drought disaster risk would increase in Sichuan basin. Compared with the baseline climate conditions from 1961 to 1990, the photosynthetic potential productivity,photo temperature potential productivity and climatic potential productivity of winter wheat would increase from 2071 to 2100 under A2 and B2 climate scenario in most regions of Sichuan basin.Future changes in climatic resources to benefit winter wheat yield in Sichuan basin.

Key words: Future climate scenario, Sichuan basin, Winter wheat, Climatic resources, Potential productivity