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Canonical correlation analysis of hydrological response and soil erosion under moving rainfall 被引量：2

Canonical correlation analysis of hydrological response and soil erosion under moving rainfall
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摘要 The impacts of rainfall direction on the degree of hydrological response to rainfall properties were investigated using comparative rainfall-runoff experiments on a small-scale slope(4 m×1 m),as well as canonical correlation analysis(CCA).The results of the CCA,based on the observed data showed that,under conditions of both upstream and downstream rainfall movements,the hydrological process can be divided into instantaneous and cumulative responses,for which the driving forces are rainfall intensity and total rainfall,and coupling with splash erosion and wash erosion,respectively.The response of peak runoff(Pr)to intensity-dominated rainfall action appeared to be the most significant,and also runoff(R)to rainfall-dominated action,both for upstream-and downstream-moving conditions.Furthermore,the responses of sediment erosion in downstream-moving condition were more significant than those in upstream-moving condition.This study indicated that a CCA between rainfall and hydrological characteristics is effective for further exploring the rainfall-runoff-erosion mechanism under conditions of moving rainfall,especially for the downstream movement condition. The impacts of rainfall direction on the degree of hydrological response to rainfall properties were investigated using comparative rainfall-runoff experiments on a small-scale slope （4 mx 1 m）, as well as canonical correlation analysis （CCA）. The results of the CCA, based on the observed data showed that, under conditions of both upstream and downstream rainfall move- ments, the hydrological process can be divided into instantaneous and cumulative responses, for which the driving forces are rainfall intensity and total rainfall, and coupling with splash erosion and wash erosion, respectively. The response of peak runoff （P0 to intensity-dominated rainfall action appeared to be the most significant, and also runoff （R） to rainfall-dominated action, both for upstream- and downstream-moving conditions. Furthermore, the responses of sediment erosion in downstream-moving condition were more significant than those in upstream-moving condition. This study indicated that a CCA between rainfall and hydrological characteristics is effective for further exploring the rainfall-runoff-erosion mechanism under conditions of moving rainfall, especially for the downstream movement condition.
作者 Qi-hua RAN Zhi-nan SHI Yue-ping XU
机构地区 Institute of Hydrology and Water Resources
出处 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2013年第5期353-361,共9页 浙江大学学报（英文版）A辑（应用物理与工程）
基金 Project supported by the National Basic Research Program (973) of China (No. 2011CB409901-01) the National Natural Science Foundation of China (No. 4081011)
关键词 Moving rainfall RUNOFF Sediment erosion Canonical correlation analysis(CCA) Moving rainfall, Runoff, Sediment erosion, Canonical correlation analysis （CCA）
分类号 S157 [农业科学—土壤学] P333 [天文地球—水文科学]
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参考文献26

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  • 2裴鑫德.中国地方品种鸡生态性状的典型相关分析[J].生态学报,1996,16(4):367-374. 被引量：47
  • 3苏理云,陈彩霞,高红霞.SPSS19统计分析基础与案例应用教程[M].北京:北京希望电子出版社,2012.
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Journal of Zhejiang University-Science A(Applied Physics & Engineering)
2013年 第5期

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