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农学学报 ›› 2021, Vol. 11 ›› Issue (3): 12-19.doi: 10.11923/j.issn.2095-4050.cjas20190400017

所属专题: 小麦 农业气象

• 土壤肥料/资源环境/生态 • 上一篇    下一篇

河南省冬小麦干旱指数特征分析及风险评估

颜玉倩1,2(), 何赵祥睿2, 朱克云2()   

  1. 1青海省气象科学研究所/青海省防灾减灾重点实验室,西宁 810001
    2成都信息工程大学大气科学学院/高原大气与环境四川省重点实验室,成都 610225
  • 收稿日期:2019-04-30 修回日期:2019-10-17 出版日期:2021-03-20 发布日期:2021-04-07
  • 通讯作者: 朱克云 E-mail:yan_yq1113@sina.com;zhuky@cuit.edu.cn
  • 作者简介:颜玉倩,女,1990年出生,青海西宁人,助工,硕士研究生,主要从事气候变化及数值模拟研究。通信地址:810001 青海省西宁市城西区五四大街19号 青海省气象科学研究所,E-mail: yan_yq1113@sina.com
  • 基金资助:
    科技部公益性行业(气象)科研专项“北方干旱灾害风险评估及区划”(GYHY201506001)

Winter Wheat in Henan: Drought Index Characteristics and Risk Assessment

Yan Yuqian1,2(), He Zhaoxiangrui2, Zhu Keyun2()   

  1. 1Qinghai Institute of Meteorological Science/Key Laboratory of Disaster Prevention and Mitigation in Qinghai Province, Xining 810001, Qinghai, China
    2College of Atmospheric Science, Chengdu University of Information Technology/Key Laboratory of Plateau Atmosphere and Environment in Sichuan, Chengdu 610225, Sichuan, China
  • Received:2019-04-30 Revised:2019-10-17 Online:2021-03-20 Published:2021-04-07
  • Contact: Zhu Keyun E-mail:yan_yq1113@sina.com;zhuky@cuit.edu.cn

摘要:

为了研究干旱对河南省冬小麦产量形成的影响,准确评估干旱造成的危害程度。笔者利用河南省气候资料、冬小麦产量资料,商丘灌溉资料分析冬小麦完成各发育期的气象条件,利用Z指数等方法,讨论冬小麦干旱的时空分布特征,并对河南省冬小麦干旱风险区划。结果表明:(1)河南省冬小麦丰年和歉年降水条件东西部差异较大,当东部(西部)全生育期降水>263 mm (284 mm)时,降水条件有利于冬小麦生长和产量形成;(2)在时间分布上,1965—2014年河南省Z指数呈下降趋势,趋于干旱;空间上呈自西北向东南减少趋势;(3)河南省干旱风险呈自西向东逐渐减小的分布特征。

关键词: 冬小麦, 干旱指数, Z指数, 风险区划, 风险评估, 河南省

Abstract:

To study the effect of drought on winter wheat yield, evaluate the damage caused by drought, based on data of climate and winter wheat yield of Henan Province, as well as the irrigation data of Shangqiu, we analyzed the meteorological conditions of winter wheat during each development period, and discussed the spatio-temporal distribution characteristics of winter wheat drought by Z index, and carried out the drought risk zoning of winter wheat in Henan. The results showed that: (1) the precipitation conditions of winter wheat in abundant and poor years in Henan varied greatly from east to west, the precipitation >263 mm (284 mm) during the whole growth period in the east (west) was conducive to the growth and yield of winter wheat; (2) in terms of time distribution, Z index showed a downward trend in Henan during 1965-2014, tending to drought; in terms of space, it showed a decreasing trend from northwest to southeast; (3) the drought risk in Henan was decreasing gradually from west to east.

Key words: Winter Wheat, Drought Index, Z Index, Risk Zoning, Risk Assessment, Henan

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