信阳师范学院学报（自然科学版）2025，Vol.38Issue(1)：8-16,9.DOI:10.3969/j.issn.2097-583X.2025.01.002
1901—2020年淮河流域降水量时空分布格局
Spatial and temporal distribution pattern of precipitation in the Huaihe River Basin during 1901—2020
摘要
Abstract
Based on the month-by-month precipitation raster dataset of the Huaihe River Basin from 1901 to 2020,the temporal and spatial pattern of precipitation changes in the Huaihe River Basin over the past 120 years was analyzed by using the Mann-Kendall test,Morlet wavelet analysis and precipitation concentration. The results showed that:(1) In terms of temporal changes,the annual and four-seasonal precipitation in the Huaihe River Basin from 1901 to 2020 show a non-significant upward trend with high abruptness,and there were the first main cycles of 64 a (year),8 a (spring),61 a (summer),17 a (fall) and 32 a (winter),respectively. (2) In terms of spatial changes,the annual,spring,autumn and winter precipitation in the Huaihe River Basin decreased gradually from south to north,while the summer precipitation showed a "high-low-high" distribution from southwest to northeast,with the Dabie Mountain area and the Shandong Peninsula as the high-value and low-value areas of precipitation in the basin,respectively. The concentration of precipitation in the year and in the four seasons was generally high in the north and low in the south,and the concentration of precipitation was high in the north and low in the south. The annual and four-seasonal precipitation concentration was characterized by the distribution of high in the north and low in the south,in which the SPCI values of the four-seasonal precipitation were less than 15,and the distribution of seasonal precipitation was relatively uniform.The results of the M-K trend test showed that the annual and four-seasonal precipitation in most areas of the Huaihe River Basin showed a weak growth trend.关键词
淮河流域/降水量/时间变化特征/空间变化特征Key words
Huaihe River Basin/precipitation/temporal variation characteristics/spatial variation characteristics分类
大气科学引用本文复制引用
范宝伟,韩晓阳,王芸,姬嘉盛,宋旭佳,付潘婷,颜伟,李秀美..1901—2020年淮河流域降水量时空分布格局[J].信阳师范学院学报（自然科学版）,2025,38(1):8-16,9.基金项目
国家自然科学基金项目(41901105) （41901105）
河南省自然科学基金项目(242300421371) （242300421371）
河南省大学生创新创业训练项目(202310477040) （202310477040）
河南省高等学校青年骨干教师培养计划项目(2023GGJS096) （2023GGJS096）
河南省本科高校研究性教学改革研究与实践项目(2022SYJXLX062) （2022SYJXLX062）
河南省高等学校重点科研项目计划(22A170019) （22A170019）
信阳师范大学青年科研基金项目(2024-QN-046) （2024-QN-046）
