Study on the variation characteristics and periodic evolution of rainfall erosivity in Guilin in the past 50 years

Penghui Wang, Yanqing Li, Xiangfei Yue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sen's slope estimation method, Mann-Kendal trend analysis method, M-K mutation test method and Morlet wavelet transform were used for characteristic analysis, trend estimation, mutation test and period analysis of rainfall erosivity in Guilin from 1956 to 2015. The results show that the rainfall erosivity of Guilin City has not increased significantly in the past 50 years, the inter-annual variation coefficient is 0.19, which is moderate variation; the erosivity is the strongest in the 1990s, and the erosivity is the smallest in the 1980s;The annual rainfall erosivity has increased since 1968, with three mutations in 1968, 2002 and 2015 respectively; the ecliptic force in the rainy season controls the trend of annual rainfall erosivity; the erosivity has a cycle of 3-5a, 10-12a, 35a, 42a, which may be related to solar activity and PDO.

Original languageEnglish
Title of host publicationProceedings of the 6th Academic Conference of Geology Resource Management and Sustainable Development
EditorsHenry Zhang, Changbo Cheng
PublisherAussino Academic Publishing House
Pages313-320
Number of pages8
ISBN (Electronic)9781921712678
Publication statusPublished - Feb 10 2019
Externally publishedYes
Event6th Academic Conference of Geology Resource Management and Sustainable Development, GRMSD 2018 - Beijing, China
Duration: Dec 27 2018Dec 28 2018

Publication series

NameProceedings of the 6th Academic Conference of Geology Resource Management and Sustainable Development

Conference

Conference6th Academic Conference of Geology Resource Management and Sustainable Development, GRMSD 2018
CountryChina
CityBeijing
Period12/27/1812/28/18

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Keywords

  • Guilin
  • MK
  • Period
  • Rainfall erosivity
  • Trend
  • Wavelet

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

Wang, P., Li, Y., & Yue, X. (2019). Study on the variation characteristics and periodic evolution of rainfall erosivity in Guilin in the past 50 years. In H. Zhang, & C. Cheng (Eds.), Proceedings of the 6th Academic Conference of Geology Resource Management and Sustainable Development (pp. 313-320). (Proceedings of the 6th Academic Conference of Geology Resource Management and Sustainable Development). Aussino Academic Publishing House.