[1]LI Yong,LIU Xiuming,WANG Shijie,et al.Temporal and Spatial Distribution of Precipitation in Guizhou Province from 1961 to 2017[J].Research of Soil and Water Conservation,2019,26(06):145-150.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 06
Page number:
145-150
Column:
Public date:
2019-10-17
- Title:
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Temporal and Spatial Distribution of Precipitation in Guizhou Province from 1961 to 2017
- Author(s):
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LI Yong1,2,3, LIU Xiuming2,3, WANG Shijie2,3, CAO Le1,2,3, ZHANG Zhicai4
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1. University of Chinese Academy of Sciences, Beijing 100049, China;
2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China;
3. Puding Karst Ecosystem Research Station, Chinese Academy of Sciences, Puding, Guizhou 562100, China;
4. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
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- Keywords:
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precipitation; method of empirical orthogonal function analysis; spatial and temporal variation
- CLC:
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P426.6
- DOI:
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- Abstract:
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In order to study the temporal and spatial evolution process of precipitation in Guizhou Province, according to the precipitation data of 84 weather stations from 1961 to 2017, we analyzed time series trends, periodicity, mutation and spatial distribution of the precipitation of the Guizhou Province in the recent 57 years, by using the methods of EOF, REOF, Mann-Kendall, Cramer, YAMAMOTO, t checking and Morlet analysis. The results show the EOF method is capable for revealing the spatial and temporal distributions of precipitation field. The accumulated contribution of the first two EOF can reach to 50.08%, and reflect two typical vector distribution fields, which is the whole region pattern and east-west reverse pattern. Analysis of the eigenvector of the corresponding time factor coefficient demonstrates that the precipitation fields of the Guizhou Province mainly exhibite four types, abundant rain in whole province, less rain in whole province, abundant rain in east and less rain in west, less rain in east and abundant rain in west. On the basis of the REOF of rainfall, the Guizhou Province could be divided into two regions, east part and west part. Mutation is found in rainfall trend by Mann-Kendall test. Verification by the methods of Cramer, YAMAMOTO and t checking, indicates that the abrupt change of precipitation in zone Ⅱ is more obvious than zone t. Morlet wavelet analysis suggests that there is a strong 28-year period of the precipitation in Guizhou Province.