Long-Term Variation Patterns of Precipitations Driven by Climate Change in China from 1901 to 2022

Jing Han, Rui Zhang (), Bing Guo (), Baomin Han, Tianhe Xu and Qiang Guo
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Jing Han: School of Space Science and Physics, Shandong University, Weihai 264200, China
Rui Zhang: Key Laboratory of Remote Sensing of Gansu Province, Heihe Remote Sensing Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
Bing Guo: School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Baomin Han: School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Tianhe Xu: School of Space Science and Physics, Shandong University, Weihai 264200, China
Qiang Guo: Zibo Natural Resources and Planning Bureau, Zibo 255000, China

Sustainability, 2024, vol. 16, issue 17, 1-17

Abstract: Studying long-term precipitation trends is crucial for sustainable development, as the proper utilization of water resources is essential for maintaining a sustainable water supply. The objective and novelty of this paper was to reveal the gradual mutation process of precipitation in China over a century. This study utilized monthly precipitation data from 1901 to 2022 (at a century scale) to analyze and explore the spatiotemporal variability in precipitation across different time scales and regions with a trend analysis, an abrupt change analysis, and gravity center models. The findings indicate that (1) from 1901 to 2022, the precipitation in China generally decreased from the southeast coastal areas toward the northwest inland regions. (2) There were significant differences in the migration of precipitation gravity centers among the different study regions, with the least dispersion being observed in the Liao River basin, while the Hai River basin, various river basins in the northwest, and the Pearl River basin exhibited certain regularities in gravity center movement, and other regions showed periodic variations. (3) Over the period from 1901 to 2022, there was a trend of transitioning from lower to higher precipitation levels. (4) According to continuous long-term abrupt change tests, the timing of precipitation shifts varied across different basins. Precipitation, as a crucial component of natural resources, directly impacts various aspects of socio-economic life. Research findings provide decision support for regional flood control and disaster reduction and offer scientific decisions for ecological security.

Keywords: precipitation; center of gravity; abrupt change test; ecological health; regional sustainability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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