中国农业气象 ›› 2010, Vol. 31 ›› Issue (S1): 84-89.

• 论文 • 上一篇    下一篇

气候变化背景下江西省早稻气候生产潜力的变化特征

辜晓青;李美华;蔡哲;殷剑敏;   

  1. 江西省气象科学研究所;抚州市气象局;江西省气候中心;
  • 出版日期:2010-12-20 发布日期:2010-12-20
  • 基金资助:

    2006年武汉区域科技发展基金“长江中游区域粮食安全的气候影响评估”项目

Research on Climatic Potential Productivity of Early Rice in Jiangxi Province under the Background of Climatic Change

GU Xiao-qing1,LI Mei-hua2,CAI Zhe1,YIN Jian-min3(1.Meteorological Science Institute of Jiangxi Province,Nanchang 330046,China;2.Fuzhou Meteorological Bureau,Fuzhou 344000;3.Climate Center of Jiangxi Province,Nanchang 330046)   

  • Online:2010-12-20 Published:2010-12-20

摘要: 为了科学地评价气候条件变化对早稻生产的影响,采用了1971-2000年全省85站逐日的有关气象要素,按光合、光温和气候三级生产潜力的划分思路,构建气候生产潜力计算模式,以光合生产潜力、温度适宜度、水分适宜度为基本评价因子,计算全省1971-2000年逐年85站光合、光温和气候三级生产潜力,定量化评估气候条件变化对早稻生产的影响,并对其进行了时空分布分析。结果表明:1)1971-2000年江西省早稻的光合潜力呈略减趋势,而光温生产潜力则呈略增趋势,水分条件呈变差的趋势,致使早稻气候生产潜力总体呈减小趋势;2)赣北环鄱阳湖区、赣中和赣南中部地区的早稻气候生产潜力为全省的高值区,而赣东北和赣中西部早稻气候生产潜力相对较低;3)全省的热量条件总体尚好,各分区的早稻光温生产潜力占光合生产潜力的比例均在76%以上,热量条件的改善有利于早稻生产;4)江西省早稻气候生产潜力不稳定性较大,赣南地区早稻生产气候稳定性最好,鄱阳湖区早稻平均气候生产潜力最大。针对早稻气候生产条件的变化特点,提出了适应气候变化、保证早稻生产稳定增长的若干建议。

关键词: 早稻, 气候生产潜力, 定量评估

Abstract: Based on the day-to-day meteorological elements from 85 meteorological stations from 1971 to 2000 in Jiangxi province,it constructed a computing model of climatic potential productivity according to the three class productive potential with photosynthesis,photosynthesis-temperature and climate in order to scientifically assess the influence on early rice production by climatic change.The author took the photosynthesis potential productivity,temperature suitability and moisture suitability as basic assessment factors,calculated the values of photosynthesis,photosynthesis-temperature,and climate,quantitative assessed the influenced on early rice production by climatic change,and analyzed its spatial and temporal distribution.The result indicated: 1) In Jiangxi province,the photosynthesis potential productivity and the moisture condition was showed downtrend,the photosynthesis-temperature potential productivity had the tendency of increasing of early rice from 1971 to 2000,which resulted in the climatic potential productivity of early rice was on the decline totally;2) To the climatic potential productivity of early rice,the Poyang Lake area of north part,the middle part and the middle area of south part were belonged to high value areas,the northeast part and midwest part belonged to relatively low value areas;3)In general,the heat condition of whole province was better,the photosynthesis-temperature potential productivity was more then 76 percent of the photosynthesis potential productivity in different areas,so the improvement of heat condition was good for the production of early rice;4) The instability of climatic potential productivity of early rice was comparatively large in Jiangxi province,the south part had the best climatic stability,and the average climatic potential productivity was the largest in Poyang Lake area.Finally,according to the changing characteristic of climatic productive condition of early rice,the paper put forward some suggestions that how to adapt to climatic change and assure the steady growth of early rice production.

Key words: Early rice, Climatic potential productivity, Qualitative assessment