期刊论文详细信息
Journal of Water and Climate Change 卷:13
Temporal variations characteristic of precipitation in the Three Gorges Reservoir area from 1961 to 2016
Youwei Zuo1  Baihui Wang2  Shunhui Yu3  Fengtai Gu3  Li Sheng4  Dianying Liu5 
[1] Key Laboratory of Eco-environments in the Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing 400715, China;
[2] Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China;
[3] Key Laboratory of Water Environment Evolution and Pollution Control in the Three Gorges Reservoir Region, Chongqing Three Gorges University, Wanzhou 404100, China;
[4] School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
[5] Yiyang Meteorological Bureau, Yiyang 413000, China;
关键词: decadal change;    inter-annual change;    multi-time scale;    precipitation;    three gorges reservoir area;   
DOI  :  10.2166/wcc.2022.013
来源: DOAJ
【 摘 要 】

As a hot issue, the precipitation characteristics of the Three Gorges Reservoir (TGR) area drew widespread interest from domestic and overseas academic circles. Based on China's surface-based meteorological monthly precipitation data from 1961 to 2016 in the TGR area, the spatial, inter-annual and inter-decadal, and multi-time-scale changes of precipitation in the TGR area are analyzed by using Collaborative Kriging (Co-Kriging, CK) Interpolation, linear regression analysis, Morlet wavelet analysis and 5-year sliding average processing, which provide the reference basis for further discussion on the impact of climate change, flood control and drought relief work in the reservoir area. Research shows that in the past 56 years, the average annual precipitation in most areas of the TGR ranges from 1,000 to 1,200 mm; the variation of precipitation in the TGR area shows a weak decreasing trend, with great fluctuation between year and generation, and the precipitation in each decade has a ‘less-more-less’ changing trend; the annual precipitation in the TGR area has periodic changes on multi-time scales, mainly including 25, 16 and 8 years. The smaller the scale the shorter the average period of precipitation change. HIGHLIGHTS The average annual precipitation of the TGR ranges from 1,000 to 1,200 mm.;Inter-annual and inter-decadal of precipitation shows a ‘less-more-less’ changing trend.;Multi-time scale changes of precipitation mainly including 25, 16 and 8 years.;

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