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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (36): 194-204.doi: 10.11924/j.issn.1000-6850.casb15070075

所属专题： 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

4种干旱指标在河西走廊地区的适用性评估

梁 丹,赵锐锋,李 洁,谢作伦,祝 稳   

  1. (西北师范大学地理与环境科学学院,兰州 730070）
  • 收稿日期:2015-07-14 修回日期:2015-09-10 接受日期:2015-09-25 出版日期:2015-12-30 发布日期:2015-12-30
  • 通讯作者: 梁丹
  • 基金资助:
    国家自然科学基金项目“基于类型变化追踪模型的黑河中游湿地景观破碎化过程及其驱动力研究”(41261047)；西北师范大学青年教师科研能力提升计划骨干项目“干旱内陆河流域湿地退化机制与生态系统恢复研究”(NWNU-LKQN-11-11)。

Applicability Assessment of Four Drought Indexes in Hexi Corridor Regions

Liang Dan, Zhao Ruifeng, Li Jie, Xie Zuolun, Zhu Wen   

  1. (College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070)
  • Received:2015-07-14 Revised:2015-09-10 Accepted:2015-09-25 Online:2015-12-30 Published:2015-12-30

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摘要： 为了对比4种干旱指标在河西走廊地区的适用性，利用中国气象局提供的河西地区12个气象站点1960—2013年地面观测数据，计算出该区4种干旱指标，并对照《中国气象灾害大典》的实况干旱记录资料，评估这4种干旱指标在河西走廊地区的适用性。结果显示：（1）在年际尺度上，Pa和MI所判定的干旱等级高于实测干旱等级，SPI和SPEI的模拟能力相对较好；在季节尺度上，SPEI的判断结果与实际情况更为接近；（2）Pa、SPI和MI在整个河西走廊的部分区域均呈现不同程度的变湿趋势，而SPEI的倾向率空间分布特征表明河西走廊地区以不同的速率变干；（3）Pa、SPI和SPEI的干旱频率一致；MI在降水更加稀少的干旱区域适应性和可靠性相对较差；（4）SPEI与MI的相关性在干旱的疏勒河流域较差；（5）通过与实际干旱记录的对比，发现4种指标的出现错误的频率为MI＞SPI和Pa＞SPEI。

关键词: CCYV, CCYV, 外壳蛋白, 原核表达, 间接酶联免疫吸附测定

Abstract: In order to assess the applicability of four kinds of drought indexes in Hexi Corridor regions, the indexes were calculated with the data of 12 meteorological sites in Chinese Meteorological Administration in Hexi Corridor from 1960 to 2013, and the applicability was assessed according to The Chinese Meteorological Disasters Encyclopedia. The results showed that: (1) on the annual scale, the drought grades assessed by Pa and MI were higher than the observation data, the simulating ability of SPI and SPEI was relatively good; on the seasonal scale, the judgment result of SPEI was more close to the actual situation; (2) wetting tendency had different degrees in some regions assessed by Pa, SPI and MI, but drying tendency showed in Hexi Corridor assessed by SPEI; (3) Pa, SPI and SPEI had the same drought frequency; the adaptability and reliability of MI were relatively poorer in drought area; (4) the correlation between the SPEI and MI in the arid Shule river basin was relatively poor; (5) compared with the actual drought records, the error rates of the four indexes followed the order of MI＞SPI and Pa＞SPEI.