基于短时间尺度自适应帕尔默干旱指数的中国干旱演变特征分析
作者:
作者单位:

(1.南京信息工程大学水文与水资源工程学院,江苏 南京 210044;2.河海大学水文水资源学院,江苏 南京 210098)

作者简介:

朱烨(1987—),女,讲师,博士,主要从事干旱监测、模拟与预测等研究。E-mail:zhuye396@163.com 通信作者:刘懿(1988—),男,副教授,博士,主要从事干旱监测、模拟与预测等研究。E-mail:liuyihhdx@126.com

通讯作者:

中图分类号:

P426.616

基金项目:

国家自然科学基金(41901037,42171021,41971042);江苏省高等学校自然科学研究项目(19KJB170023);江苏省高等学校大学生创新创业训练计划(201910300264)


Drought characteristics analysis in China based on self-calibrating Palmer drought severity index in a short time scale
Author:
Affiliation:

(1.School of Hydrology and Water Resources, Nanjing University of Information Science & Technology, Nanjing 210044, China;2.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    以帕尔默干旱指数(PDSI)为基础,构建融合Penman-Monteith潜在蒸散发公式且具有短时间尺度效应的自适应帕尔默干旱指数scPDSIpm,分析了1951—2016年中国旱涝演变趋势及干旱特征的空间分布规律和历史干旱事件的时空演变过程,并结合实际旱情记录资料验证了指数的可靠性。结果表明:空间上,中国东北、华北、华中、西北呈变旱趋势,西北和东南少数地区为变涝趋势;中国大部分地区旱情开始时间集中在6—7月,北部地区干旱历时长且干旱烈度大,南部地区干旱历时短、干旱烈度小;scPDSIpm能够很好地指示旱情发生时间和区域,准确地捕捉到旱情中心的转移过程。

    Abstract:

    Based on the Palmer drought severity index (PDSI), a modified variant of the self-calibrating PDSI, which uses the Penman-Monteith equation for calculating the potential evapotranspiration and has a short time scale effect (denoted as scPDSIpm), was proposed. The drying/wetting trends and drought characteristics of spatial distribution and temporal evolution of historical drought events in China during 1951-2016 were analyzed. The reliability of scPDSIpm is verified based on the recorded drought events. Results showed that, from the prospective of spatial distribution, there is a drying trend from the northeast of China, through north and central, to the southwest of China, while a wetting trend exists in the northwest and the southeast of China. For most regions in China, droughts likely start from June or July. Droughts in north China have long duration and high severity, whereas droughts in south China have short duration and low severity. The scPDSIpm is capable of capturing the onset time, affected area and migration process of drought.

    参考文献
    相似文献
    引证文献
引用本文

朱烨,靳鑫桐,刘懿,等.基于短时间尺度自适应帕尔默干旱指数的中国干旱演变特征分析[J].水资源保护,2022,38(4):124-130.(ZHU Ye, JIN Xintong, LIU Yi, et al. Drought characteristics analysis in China based on self-calibrating Palmer drought severity index in a short time scale[J]. Water Resources Protection,2022,38(4):124-130.(in Chinese))

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-01-08
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-07-18
  • 出版日期: