基于SPEI指数的呼伦贝尔市干旱时空变化特征研究  

Study on the Spatiotemporal Variation of Drought in Hulunbuir City Based on SPEI Index

作　　者：任宾宾[1] 邱绍柱 苏骅[3] 梁晓宁 杨亚鹏 

机构地区：[1]呼伦贝尔学院旅游地理与历史文化学院,内蒙古 呼伦贝尔 [2]呼伦贝尔学院图书馆,内蒙古 呼伦贝尔 [3]保山学院资源与环境学院,云南 保山 [4]内蒙古鄂尔多斯市巴音孟克煤炭有限责任公司,内蒙古 鄂尔多斯 [5]内蒙古呼和浩特市第三十九中金地校区,内蒙古 呼和浩特

出　　处：《气候变化研究快报》2023年第6期1156-1164,共9页Climate Change Research Letters

摘　　要：本文根据呼伦贝尔市16个站点1961~2018年气候数据,计算年、季尺度SPEI值,分析呼伦贝尔市干旱时空变化特征。结果表明58年间呼伦贝尔市总体呈变干趋势,半干旱区春、夏季干旱趋势较为明显,冬季湿润趋势较为明显。自东向西,SPEI呈减小趋势,干旱程度呈增大趋势,其中满洲里、新右旗干旱趋势最明显。特旱、重旱发生频率较小,轻旱、中旱风险较大。The annual and seasonal SPEI values were calculated according to climate data from 16 stations from 1961 to 2018 in Hulunbuir City, and the spatiotemporal variation characteristics of drought were analyzed in Hulunbuir City. The results showed that Hulunbuir City had shown an overall drying trend over the past 58 years, with a more pronounced drying in spring and summer in semi-arid region and a more pronounced wetting in winter. From east to west, SPEI showed decreasing and the drought increased significantly, especially in Manzhouli and Xinyou Banner. The frequency of extreme drought and severe drought was relatively low, while the risk of mild and moderate drought was relatively high.

关 键 词：SPEI 干旱 时空变化 呼伦贝尔 

分 类 号：F32[经济管理—产业经济]