长江科学院院报2017，Vol.34Issue(6)：12-16,23,6.DOI:10.11988/ckyyb.20160268
基于多尺度SPI指数的哈巴河地区近53a的干旱分析
Drought Analysis Based on Multi-timescale Standardized Precipitation Index in Habahe Region from 1962 to 2014
陈永志 1李傲 1周祥1
作者信息
- 1. 重庆水利电力职业技术学院,重庆永川402160
- 折叠
摘要
Abstract
The drought evolution characteristics of Habahe in Xinjiang Autonomous Region from 1962 to 2014 were analyzed based on multi-timescale standardized precipitation index (SPI).Results show that 1) the SPI index method is highly applicable to Habahe region in the past 53 years,and the SPI values of different time scales can be used for drought monitoring,which is in line with actual drought conditions.2) According to the process lines of SPI1 (time scale of one month),SPI3(time scale of three months) and SPI6(time scale of six months),the probability of different levels of drought events was around 20％.The drought condition reflected by SPI3 was more severe than those by SPI1 and SPI6.The value of SPI12 presented a significant rising trend,indicating that the regional climate is becoming wet gradually,conducive to alleviating regional drought.3) The inter-annual process of SPI value in different seasons varied significantly,among which the minimum SPI value was-1.97 in 1963.During the 53 years,slight drought event appeared for 9 years,medium drought event 4 years,and severe drought event 0 year;medium and severe droughts in four seasons took up 11 years in average,accounting for 26％-28％;in winter,the SPI value displayed rising trend,whereas in other seasons the changes were not obvious.The process of SPI value in summer was similar with that of annual SPI value.关键词
多时间尺度/SPI指数/新疆哈巴河地区/干旱演变分析/水资源评估Key words
multi-timescale/SPI/Habahe region/drought evolution analysis/water resources assessment分类
天文与地球科学引用本文复制引用
陈永志,李傲,周祥..基于多尺度SPI指数的哈巴河地区近53a的干旱分析[J].长江科学院院报,2017,34(6):12-16,23,6.
