| 基于小波变换的三江平原井灌区主汛期降水序列多时间尺度分析 |
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| 引用本文： | 刘东,付强.基于小波变换的三江平原井灌区主汛期降水序列多时间尺度分析[J].水土保持研究,2008(6). |
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| 作者姓名： | 刘东 付强 |
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| 作者单位： | 东北农业大学水利与建筑学院;东北农业大学农林经济管理博士后科研流动站; |
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| 基金项目： | 国家自然科学基金(No.30400275) |
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| 摘 要： | 近些年来,由于水田面积迅速增加,导致三江平原井灌水稻区地下水位普遍下降,吊泵、局部超采现象时有发生,因此,三江平原的地下水资源平衡急需恢复。为解决上述问题,以853农场为例,应用小波理论,对853农场实测主汛期降水时间序列的多时间尺度变化特征及突变特征进行分析,并与实测年降水序列变化特征进行了对比分析。结果表明:853农场主汛期降水序列具有3 a,6 a,29 a以及13 a左右4个主周期,同时,主汛期降水序列与年降水序列的主周期具有较好的一致性。该研究结果为853农场乃至整个三江平原充分利用天然降水、地下水资源的恢复及可持续利用提供了科学依据。
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| 关 键 词： | 三江平原 井灌水稻 主汛期降水序列 小波变换 多时间尺度分析 |
Multi-Time Scales Analysis of Main Flood Season Precipitation Series Based on Wavelet Transform in Area of Well-Irrigation in Sanjiang Plain |
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| 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(6). |
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| Authors: | LIU Dong FU Qiang |
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| Institution: | LIU Dong1,2,FU Qiang1(1.School of Water Conservancy & Civil Engineering,Northeast Agricultural University,Harbin 150030,China,2.Postdoctoral Scientific Research Mobile Station of Agriculture , Forestry Economic Management,China) |
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| Abstract: | 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 characteri... |
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| Keywords: | Sanjiang Plain well irrigation paddy main flood season precipitation series wavelet transform multi-time scales analysis |
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