欢迎访问《中国农学通报》,

中国农学通报 ›› 2023, Vol. 39 ›› Issue (29): 103-108.doi: 10.11924/j.issn.1000-6850.casb2022-1039

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

基于MCI指数的干旱灾害综合风险指标的构建及风险区划

甘臣龙1(), 史继清2(), 普布多吉2, 周刊社2   

  1. 1 墨竹工卡县气象局,拉萨 850000
    2 西藏自治区气候中心,拉萨 850000
  • 收稿日期:2022-12-08 修回日期:2023-02-15 出版日期:2023-10-15 发布日期:2023-10-11
  • 通讯作者: 史继清,女,1988年出生,山东菏泽人,副高,硕士研究生,主要从事农业气象灾害、遥感方面研究。通信地址:850000 西藏拉萨市城关区林廓北路2号,E-mail:549923050@qq.com。
  • 作者简介:

    甘臣龙,男,1988年出生,安徽无为人,工程师,本科,主要从事地面气象观测、农业气象方面研究。通信地址:850200 西藏自治区拉萨市墨竹工卡县工卡镇南京西路33号,E-mail:

  • 基金资助:
    西藏自治区自然科学基金“基于MCI指数的西藏主要农作物保险费率厘定的应用研究”(XZ202001ZR0033G); 西藏自治区科技重点研发计划“气候变化背景下西藏高原季节划分及农业气候资源时空变化特征研究”(XZ202001ZY0023N); 西风-季风协同作用及其环境效应之子专题“西风-季风协同作用下青藏高原典型植被环境野外科考及主要气象灾害时空特征分析”(2019QZKK0106)

Construction of Drought Comprehensive Risk Index and Risk Regionalization Based on MCI Index

GAN Chenlong1(), SHI Jiqing2(), PUBU Duoji2, ZHOU Kanshe2   

  1. 1 Maizhokunggar Meteorological Bureau, Lhasa 850000
    2 Tibet Climate Center, Lhasa 850000
  • Received:2022-12-08 Revised:2023-02-15 Published-:2023-10-15 Online:2023-10-11

摘要:

利用西藏青稞主要种植区产量资料、生育期资料和气象资料,建立了适用于西藏青稞主要种植区干旱灾害风险评估的致灾因子危险性指数模型、承灾体暴露性指数模型、承灾体易损性指数模型、抗旱指数模型和相应的指标体系,并构建了西藏青稞主要种植区干旱灾害综合风险评估模型,在此基础上进行干旱灾害风险评估及区划,同时利用历史旱灾发生频次资料验证了MCI指数和干旱灾害综合风险指标。结果表明:基于MCI指数构建的致灾因子危险性指数模型在西藏青稞主要种植区适用性较好;干旱灾害综合风险整体呈现中间低、两边高的态势,高风险区集中在研究区西部,次高和中等风险区分布在尼木、贡嘎、错那、芒康等地,次低风险区主要集中在昌都市和山南市中部、察隅等地,低风险区集中在林芝市大部、昌都市西部、山南市东部边缘地区。

关键词: MCI指数, 青稞, 综合风险指标, 风险区划

Abstract:

Based on the yield data, growth period data and meteorological data of the main highland barley planting areas in Tibet, the hazard index model of the disaster factors, the exposure index model of the disaster-bearing body, the vulnerability index model of the disaster-bearing body, the drought-resistance index model and the corresponding index system applicable to the drought disaster risk assessment of the main highland barley planting areas in Tibet were established, and the comprehensive risk assessment model of the drought disaster in the main highland barley planting areas in Tibet was constructed. On this basis, the risk assessment and zoning of drought disasters were carried out, and the MCI index and comprehensive risk index of drought disasters were verified by using the historical drought frequency data. The results showed that the hazard index model of hazard factors based on MCI index had good applicability in the main highland barley planting areas in Tibet. The comprehensive risk of drought disaster was generally low in the middle and high on both sides. The high risk areas were concentrated in the west of the study area. The secondary high and medium risk areas were distributed in Nimu, Gongga, Sana, Mangkang and other places. The secondary low risk areas were mainly concentrated in Changdu, the middle of Shannan City, Chayu and other places. The low risk areas were concentrated in most of Linzhi City, the west of Changdu City, and the eastern edge of Shannan City.

Key words: MCI index, highland barley, comprehensive risk indicators, risk zoning