[1]徐 晶,时延锋,徐征和,等.1961—2020年沂蒙山区降雨侵蚀力时空变化特征[J].水土保持研究,2022,29(06):36-44.
　XU Jing,SHI Yanfeng,XU Zhenghe,et al.Spatiotemporal Variation Characteristics of Rainfall Erosivity in Yimeng Mountain Area from 1961 to 2020[J].Research of Soil and Water Conservation,2022,29(06):36-44.
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1961—2020年沂蒙山区降雨侵蚀力时空变化特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 29 期数: 2022年06期 页码: 36-44 栏目: 出版日期: 2022-10-20
Title:
Spatiotemporal Variation Characteristics of Rainfall Erosivity in Yimeng Mountain Area from 1961 to 2020
文章编号:
1005-3409(2022)06-0036-09
作者:
徐 晶1, 时延锋2, 徐征和1, 徐立荣1
(1.济南大学 水利与环境学院, 济南 250022; 2.山东建筑大学 市政与环境工程学院, 济南 250101)
Author(s):
XU Jing1, SHI Yanfeng2, XU Zhenghe1, XU Lirong1
(1.School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; 2.School of Municipal & Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China)
关键词:
降雨侵蚀力;  土壤侵蚀;  时空变化特征;  日降雨侵蚀力模型;  沂蒙山区
Keywords:
rainfall erosivity;  soil erosion;  spatiotemporal variation characteristics;  daily rainfall erosivity model;  Yimeng Mountain Area
分类号:
S157.1
文献标志码:
A
摘要:
为了分析沂蒙山区降雨侵蚀力的时空变化特征,利用沂蒙山区20个国家气象站1961—2020年的逐日降雨数据,采用日降雨侵蚀力模型、Mann-Kendall趋势/突变检验法、累积距平法、小波分析、反距离加权插值(IDW)等方法进行了系统的研究。结果表明:沂蒙山区年均降雨侵蚀力为5 081.59(MJ·mm)/(hm2·h·a),且年际变化呈现波动上升的变化趋势; 年降雨侵蚀力存在22 a的主周期和7 a的次周期; 降雨侵蚀力年内多集中在汛期6—9月份,占全年的84.15%; 除秋季外,春季、夏季和冬季的降雨侵蚀力均呈现上升的变化趋势; 年均降雨侵蚀力空间上由东南向西北呈带状逐渐递减; 各气象站变异系数的范围是0.32～0.53,地区差异比较明显,西部地区相对较大,南部地区相对较小。沂蒙山区降雨侵蚀力的时空分布特征与侵蚀性降雨分布基本一致,并且集中分布在汛期,因此要加强研究区汛期尤其是7月、8月份的水土流失防治工作,可为研究区水土流失的监测、预报及治理等提供决策依据。
Abstract:
In order to analyze the spatiotemporal variation characteristics of rainfall erosivity in Yimeng Mountain Area, a systematic research was carried out based on the daily rainfall data from 1961 to 2020 of 20 national meteorological stations. The study methods include the daily rainfall erosivity model, Mann-Kendall test, cumulative anomaly method, wavelet analysis and inverse distance weighted interpolation(IDW). The results are as follows. The average annual rainfall erosivity was 5 081.59(MJ·mm)/(hm2·h·a)in Yimeng Mountain Area, and the interannual variation showed a fluctuating upward trend. Annual rainfall erosivity had a main cycle of 28-year and a subcycle of 13-year. Rainfall erosivity mostly concentrated in the flood season from June to September, accounting for 84.15% of the whole year. And except autumn, rainfall erosivity in spring, summer and winter showed an upward trend. The annual rainfall erosivity decreased gradually from southeast to northwest. The variation coefficients of the rainfall stations had obvious regional differences, ranging from 0.32 to 0.53, which was relatively great in the western region and relatively small in the southern region. The spatiotemporal distribution characteristics of rainfall erosivity in Yimeng Mountain Area were basically consistent with the distribution of erosive rainfall. And the rainfall erosivity mainly concentrated in the flood season. So, the soil erosion control in the flood season, especially in July and August, should be strengthened. These results can provide important reference for the monitoring, prediction and treatment of soil and water losses in the study area.

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备注/Memo

收稿日期:2021-10-20 修回日期:2021-11-26
资助项目:国家自然科学基金(42007153,42007176); 山东省自然科学基金(ZR2021ME145); 济南大学博士基金(XBS1919)
第一作者:徐晶(1990—),女,山东烟台人,博士,讲师,研究方向:水生态与水环境,水土保持。E-mail:stu_xuj@ujn.edu.cn
通信作者:时延锋(1990—),男,山东日照人,博士,讲师,研究方向:土壤—地下水污染与控制、水生态与水环境。E-mail:13953@sdjzu.edu.cn

更新日期/Last Update: 2022-10-20