长江科学院院报2017，Vol.34Issue(10)：17-23,30,8.DOI:10.11988/ckyyb.20160665
1964-2013年汉江生态经济带干湿气候时空变化分析
Spatiotemporal Changes of Dry-wet Climatic in Hanjiang River Ecological Economic Region During 1964-2013
摘要
Abstract
According to the daily observation data of meteorological stations in the Hanjiang river ecological economic region from 1964 to 2013,we analyzed the trends,spatial changes,abrupt changes and cycles of dry-wet climate factors through climate inclination rate,Kriging interpolation,M-K mutation test,and wavelet analysis.Results suggest that the study region generally experienced a change from wet to dry.Annual precipitation,potential evapotranspiration,dry-wet index and water deficit all displayed a linear downward trend,with their sudden changes happened in 2005,1972,2006,and 2005,respectively.The dry-wet cycle is 5-year,15-year and 25-year in time scale.Moreover,the study region can be roughly divided into humid and semi-humid regions,and each dry-wet climate factor presents a trend of “small in mountainous area and large in plain area” in space,which gradually becomes dry along the Hanjiang river from the southeast to the northwest.In conclusion,the dry-wet climate in the Hanjiang river basin is relatively complex and has gradually become dry.We should pay necessary attention to it and take scientific and feasible drought-resisting measures in response to dry-wet climate change.关键词
汉江生态经济带/干湿气候/时空变化/年际变化/突变/防旱减灾Key words
Hanjiang river ecological economic region/wet-dry climate/spatio-temporal changes/interannual variation/abrupt change/drought relief and disaster reduction分类
天文与地球科学引用本文复制引用
张逸飞,张中旺,孙小舟,龚佑海,张志洁,孙雨露..1964-2013年汉江生态经济带干湿气候时空变化分析[J].长江科学院院报,2017,34(10):17-23,30,8.基金项目
湖北省教育厅人文社科重点项目(16D090) （16D090）
