欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

河南省夏玉米花期连阴雨灾害风险区划

成林1,2,刘荣花1,2**   

  1. 1中国气象局/河南省农业气象保障与应用技术重点开放实验室, 郑州 450003; 2河南省气象科学研究所, 郑州 450003)
  • 出版日期:2012-12-10 发布日期:2012-12-10

Disaster risk zoning of continuous rain during florescence of summer maize in Henan Province, Central China.

CHENG Lin1,2, LIU Rong-hua1,2**   

  1. (1CMA/Henan Key Laboratory of Agrometeorological Ensuring and Applied Technique, Zhengzhou 450003, China; 2Henan Institute of Meteorological Sciences, Zhengzhou 450003, China)
  • Online:2012-12-10 Published:2012-12-10

摘要:
花期连阴雨灾害直接影响夏玉米高产稳产,灾害风险区划研究可为开展灾害风险管理提供依据。利用1961—2010年河南省夏玉米抽雄至吐丝期间的逐日气象观测资料、夏玉米产量资料,统计了河南省夏玉米花期连阴雨平均发生频率与范围,构建了连阴雨天气风险强度序列,采用拉格朗日插值法,通过期望产量提取了花期连阴雨灾损率序列,最终形成了花期连阴雨灾害风险区划指数,对全省夏玉米花期连阴雨开展区划。结果表明:黄河以北大部、豫中局部及南阳盆地东部等地区灾害风险指数在0.25以下,为低风险区,低风险区站点占全省的33.3%;而豫北北部、豫东和淮南大部风险指数在0.50以上,为高风险区,占全省的14.8%。

Abstract: Continuous rain during florescence has direct impact on the high and stable yielding of summer maize, while the study of disaster risk zoning can provide basis for the management of disaster risk. By using the daily weather data in the period from heading to spinning stage of summer maize and the yield data of summer maize in Henan Province from 1961 to 2010, this paper statistically calculated the average occurrence frequency and scope of continuous rain during the florescence of summer maize, established the series of disaster risk intensity of continuous rain, and extracted the yield loss rate caused by continuous rain with the method of Lagrange’s interpolation. Finally, the risk zoning index for continuous rain was set up to make zoning of continuous rain during florescence of summer maize in the Province. The results showed that the relatively low risk area of continuous rain during the florescence of summer maize with a risk index below 0.25 was mainly distributed in the most part of north of Yellow River, local part of middle Henan, and east part of Nanyang basin, occupying about 33.3% of the whole Province, whereas the high risk area with a risk index higher than 0.5 was in the north part of north Henan and most part of east Henan and south Huaihe River, occupying about 14.8% of the whole Province.