沂河流域1961-2010年降雨侵蚀力时空分布特征
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目“沂河流域土地覆被变化和蓄水工程水文效应的分析与模拟”(41101079);山东省自然基金(ZR2015DM012);山东师范大学大学生创新创业训练计划国家级项目(201610445017)


Spatio-temporal Variations Characteristics of Rainfall Erosivity During 1961-2010 in Yihe Basin
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    [目的] 分析沂河流域近50 a的降雨量和降雨侵蚀力的时空变化特征,为流域水土流失防治及土地利用合理规划等工作提供参考。[方法] 利用沂河流域及周边12个气象站1961-2010年的日降雨数据,基于日降雨信息的月降雨侵蚀力模型计算流域多年平均降雨侵蚀力,采用Mann-Kendall非参数检验法及析取Kriging内插法分析流域降雨量和降雨侵蚀力的时空变化特征。[结果] 沂河流域降雨量和降雨侵蚀力空间分布上呈现出由西南向北逐级递减的变化趋势。多年平均降雨量为789.41 mm,多年平均降雨侵蚀力为2626.09(MJ·mm)/(hm2·h·a),两者都在1965年产生突变;降雨量和降雨侵蚀力年内分布主要集中在夏季(6-8月),分别占全年比例的63.02%和71.22%,二者最大值都出现在7月,且秋季对流域多年降雨量的减少趋势贡献最多,夏季的降雨侵蚀力上升幅度最大。[结论] 沂河流域的降雨量和降雨侵蚀力空间分布趋势相似,不同月份的降雨量与降雨侵蚀力差异不同。

    Abstract:

    [Objective] Analyzing the spatio-temporal variations of rainfall and rainfall erosivity of the Yihe Basin, to provide some references for soil and water loss control and land use planning.[Methods] A monthly rainfall erosivity model was adopted to calculate the rainfall erosivity by using daily precipitation data that were collected from 12 weather stations of Yihe Basin and its surrounding regions during 1961-2010. The spatio-temporal variations of rainfall and rainfall erosivity were analyzed by Mann-Kendall nonparametric tests and disjunctive Kriging space interpolation method.[Results] The spatial distributions of rainfall and rainfall erosivity in Yihe Basin showed a decreasing trends from the southwest part to the north part. The yearly averaged rainfall and rainfall erosivity were 789.41 mm and 2 626.09(MJ·mm)/(hm2·h·a). Both of them were observed changed abruptly in 1965. The monthly rainfall and rainfall erosivity in Yihe Basin were mainly distributed in summer(June to August), accounting for 63.02% and 71.22% of the corresponding annual values respectively, and their maximum value were all found in July. The decrease proportion of rainfall in Autumn contributed mostly to the yearly decreasing trend of rainfall. The rainfall erosivity in summer had the greatest contribution.[Conclusion] The spatial distribution of rainfall and rainfall erosivity was similar in Yihe Basin. The monthly rainfall was different from the monthly rainfall erosivity.

    参考文献
    相似文献
    引证文献
引用本文

李子君,林锦阔,姜爱霞,张晨.沂河流域1961-2010年降雨侵蚀力时空分布特征[J].水土保持通报,2017,37(3):86-92

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2016-09-20
  • 最后修改日期:2016-10-08
  • 录用日期:
  • 在线发布日期: 2017-07-11
  • 出版日期: