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[1]LI Shuoyang,LIU Xiaoyan,YANG Guiyu,et al.Analysis of Spatial and Temporal Distribution of Precipitation and Drought in Hubei Province[J].Research of Soil and Water Conservation,2019,26(02):202-207.

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Analysis of Spatial and Temporal Distribution of Precipitation and Drought in Hubei Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 02 Page number: 202-207 Column: Public date: 2019-04-28

Title:: Analysis of Spatial and Temporal Distribution of Precipitation and Drought in Hubei Province

Author(s):: LI Shuoyang¹, LIU Xiaoyan¹, YANG Guiyu², DUAN Na³; 1. College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China;
2. China Institute of Water Resources and Hydropower Research, Beijing 100038, China;
3. College of Water Conservancy and Hydropower of Hebei University of Engineering, Handan, Hebei 056021, China

Keywords:: precipitation; flood and drought; Z index; spatial and temporal distribution; EOF

CLC:: P426.6;P338⁺.6

DOI:: -

Abstract:: To more comprehensively understand the spatial and temporal distribution characteristics of precipitation and drought and flood in Hubei Province, based on the data of 30 rainfall stations in Hubei Province, the M-K trend test, wavelet analysis, Z value and EOF method were used to analyze and calculate the data. The variation of rainfall, periodicity and spatial distribution in the 1960—2013 years of the province were analyzed. The regional drought and flood level, the spatial distribution of drought and flood and the spatial distribution pattern of drought and flood Z value in 30 stations were also analyzed in Hubei Province. The results indicated that the precipitation lecreasing in the last 50 years had been decreasing slightly. But the decrease trend was not significant. The precipitation decreasing tendency was 2.92 mm/decade. There was more precipitation in the southeast and southwest and the trend of precipitation increased in the eastern and central regions. In this drive, the alternating droughts and floods occurred frequently in the province. The southeast was prone to flooding and the northwest region was prone to drought. According to the EOF orthogonal decomposition distribution map of drought and flood Z value, there were three types of distribution of drought and flood in Hubei Province, which was uniform on provincial scale, opposite in the northwest and southeast directions, and ’sandwich’ type from northwest to southeast. Their contribution rates were 50.23%, 16.14%, 5.59%, respectively.

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