中国农业气象 ›› 2013, Vol. 34 ›› Issue (04): 455-461.doi: 10.3969/j.issn.1000-6362.2013.04.012

• 论文 • 上一篇    下一篇

基于两种方法的四川水稻气候干旱风险评价对比

王婷,袁淑杰,王鹏,游超   

  1. 1成都信息工程学院大气科学学院,成都610041;2沈阳中心气象台,沈阳110016;3四川省农业气象中心,成都610072
  • 收稿日期:2012-12-06 出版日期:2013-08-20 发布日期:2014-01-03
  • 作者简介:王婷(1989-),女,江苏无锡人,硕士生,研究方向为气象防灾减灾。E-mail:731776009@qq.com
  • 基金资助:

    中国气象局公益性行业(气象)科研专项(GYHY201006023)

Comparison of Risk Assessment on Climatic Drought for Rice Based on Two Methods in Sichuan Province

WANG Ting,YUAN Shu jie,WANG Peng ,YOU Chao   

  1. 1Dept.of Atmospheric Sciences,Chengdu University of Information and Technology,Chengdu 610041,China;2Shenyang Central Meteorological Observatory,Shenyang 110016;3 Sichuan Province Agrometeorological Center,Chengdu 610072
  • Received:2012-12-06 Online:2013-08-20 Published:2014-01-03

摘要: 利用四川省159个站点1960-2010年逐日降水量、日平均气温资料和水稻生育期资料,分别将降水距平百分率、相对湿润度指数作为干旱指标,分析四川省水稻分蘖期、拔节-孕穗期和抽穗-扬花期不同气候干旱等级发生概率,构建水稻气候干旱灾害风险模型,评估四川省水稻分蘖期、拔节-孕穗期和抽穗-扬花期以及全生育期的气候干旱风险。结果表明,四川省水稻气候干旱风险较高的生育期主要是拔节-孕穗期和抽穗-扬花期,利用降水距平百分率和相对湿润度指数得到的风险区划结果存在一定差异,但其风险分布趋势相近。从水稻全生育期看,风险较高区域主要集中在四川盆地和四川西北部部分地区,川南地区发生干旱的概率较小。研究结果有利于降低干旱对水稻生产造成的损失,为水稻干旱评估和制定防灾减灾措施提供科学依据。

关键词: 降水距平百分率, 相对湿润度指数, 水稻, 气候干旱, 风险评估

Abstract: Based on the data of daily precipitation,daily mean temperature and the data of rice growth stages of 159 sites in Sichuan province from 1960 to 2010,taking the precipitation anomaly percentage and the relative moisture index as drought index respectively,the probability of each climatic drought level during the rice tillering stage,jointing booting stage and headingflowering stage in Sichuan province was analyzed.The rice climatic drought disaster risk model was constructed with two indexes and assessed the climatic drought risk during whole growth season in Sichuan province.The results showed that the high risk growth stages of rice climatic drought was at rice jointing booting stage and heading flowering stage,there was some differences in the risk zoning between the results of precipitation anomaly percentage and relative humidity index,but the risk distribution trends were similar.From whole rice growth stage,higher risk areas were mainly concentrated in Sichuan basin and northwestern of Sichuan,and the risk of drought in southern was smaller.The research results could help to reduce the losses caused by the drought on rice production,to provide a scientific basis for the rice drought assessment and the development of disaster prevention and mitigation measures.

Key words: Precipitation anomaly percentage, Relative moisture index, Rice, Climatic drought, Risk assessment