[1]LIU Dong,FU Qiang.Multi-Time Scales Analysis of Main Flood Season Precipitation Series Based on Wavelet Transform in Area of Well-Irrigation in Sanjiang Plain[J].Research of Soil and Water Conservation,2008,15(06):42-45.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
15
Number of periods:
2008 06
Page number:
42-45
Column:
Public date:
2008-12-20
- Title:
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Multi-Time Scales Analysis of Main Flood Season Precipitation Series Based on Wavelet Transform in Area of Well-Irrigation in Sanjiang Plain
- Author(s):
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LIU Dong1,2, FU Qiang1
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1. School of Water Conservancy & Civil Engineering, Northeast Agricultural University, Harbin 150030, China;
2. Postdoctoral Scientific Research Mobile Station of Agriculture and Forestry Economic Management, Northeast Agricultural University, Harbin 150030, China
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- Keywords:
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Sanjiang Plain; well irrigation paddy; main flood season precipitation series; wavelet transform; multi-time scales analysis
- CLC:
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P426.614
- DOI:
-
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- Abstract:
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The rapid increase of paddy field acreage has led to widely descending of groundwater level in area of well irrigation paddy in Sanjiang Plain in recent years.More and more ’hanging pump’ and partial overpumping have been occurring in area of well irrigation paddy.Therefore,the groundwater resource balance in Sanjiang Plain need to be recharged urgently.In order to solve above mentioned problems,the authors took Farm 853 as example,analyzed the multi-time scales variation characteristics and jump characteristics of actual observation main flood season precipitation time series in Farm 853 through using the wavelet theory,and the analysis results of main flood season precipitation series were compared with the variation characters of annual precipitation series.The results showed main flood season precipitation series of Farm 853 had four main periods which were 3,6,29 and 13 years around,and the main periods of main flood season precipitation series and annual precipitation series had better consistency.The study can provide scientific gist for fully utilizing natural precipitation,groundwater resource recharge and sustainable utilization in Farm 853 so much as the entire Sanjiang Plain.