中国人口·资源与环境2011，Vol.21Issue(2)：100-105,6.DOI:10.3969/j.issn.1002-2104.2011.02.018
黄淮海地区干湿状况的时空分异研究
Analysis of the Temporal and Spatial Layout of Drought in the Huang-Huai-Hai Region
摘要
Abstract
Drought, as one of the natural disasters, poses a serious threat to social and economic development.How to accurately monitor drought is the key to fight against the disaster.Currently, many indicators were selected to quantify drought, and among those indicators, standard precipitation index (SPI) is more suitable to the actual situation of Γ probability distribution to describe the change of the precipitation.For its simple calculation process and strong adaptability, now SPI has been widely applied.Huang-Huai-Hai Region was selected as the research area here, with SPI Value of the long time series scale ( 12 months and 36 months were chosen)variation to describe the moisture conditions in the research area during 1961 -2000.SPI Value of the long time scale described the efficiencies of the dry and moisture conditions of land surface.According to the temporal and spatial differences of the dry and moisture conditions, some general conclusions were drawn as follows: In the research area in 2000, the area being prone to drought increased compared with that in 1963; meanwhile, less extreme events happened.Except Zhengzhou and Hohhot meteorological stations, a very large proportion of the research areas had partial drought, mainly in the areas between Zhengzhou and Hohhot.We can deduce that the general trend of large area of drought is likely to be a certain kind of response to global warming.According to time series analysis,during 1961 -2000, more extreme drought events appeared in Hohhot and Taiyuan meteorological stations than events in Beijing.The drought condition in Zhengzhou was relatively moderate.Large differences of the SPI variations on time series exist among each meteorological station; the dominant factor is the latitude location.关键词
干旱/干旱指标/SPI/时空分异分类
天文与地球科学引用本文复制引用
武建军,刘晓晨,吕爱峰,赵林,刘明..黄淮海地区干湿状况的时空分异研究[J].中国人口·资源与环境,2011,21(2):100-105,6.基金项目
国家科技支撑计划项目"综合风险鉴别与防范技术研究"(编号:2006BAC18B06). （编号:2006BAC18B06）
