Spatio-temporal trend analysis of precipitation in Guizhou province based on GIS technology

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Wu, Jianfeng^1,2 ; Zhang, Fengtai^1,2 ; Pan, Yuanfen^1,2 ; Li, Wei^3 ; Cao, Guangjie^1,2 ; An, Youzhi^1,2

School of Geography and Tourism, Guizhou Education University, Guiyang

550018, China^1

Guizhou Provincial Key Laboratory of Geographic State Monitoring, Guiyang

550018, China^2

Institute of Mountain Resource, Guizhou Academy of Sciences, Guiyang

550001, China^3

关键词: Annual precipitation;    Guizhou Province;    Linear trend analysis;    Northern regions;    Precipitation change;    Precipitation distribution;    Spatial interpolation;    Temporal and spatial;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/5/052033/pdf
DOI  :  10.1088/1755-1315/121/5/052033

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Precipitation changes are closely related to human production and life. Based on the data of Guizhou Province from 1998 to 2012, the temporal and spatial characteristics of precipitation in Guizhou Province were analyzed from the annual, seasonal and monthly scales by linear trend analysis and ArcGIS kriging spatial interpolation. The results show that the annual precipitation is mainly concentrated in the summer, accounting for 47.6% of the year, followed by spring accounted for 26.9%, autumn accounted for 18.6% in winter accounted for 6.9%. In the time, the precipitation in the study area shows a decreasing trend in the annual scale, seasonal scale and July. The overall spatial precipitation distribution shows a decreasing trend from the east to the west. The precipitation also in the south is higher than the northern region.