| 近50年黄土高原侵蚀性降水的时空变化特征 |
| |
| 引用本文： | 信忠保,许炯心,马元旭. 近50年黄土高原侵蚀性降水的时空变化特征[J]. 地理科学, 2009, 29(1) |
| |
| 作者姓名： | 信忠保 许炯心 马元旭 |
| |
| 作者单位： | 1. 北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京,100083;中国科学院地理科学与资源研究所,北京,100101
2. 中国科学院地理科学与资源研究所,北京,100101 |
| |
| 基金项目： | 国家自然科学基金，中国科学院地理科学与资源研究所领域前沿三期创新项目 |
| |
| 摘 要： | 利用黄土高原及其附近地区99个站点逐日降水观测资料,分析了1956～2005年黄土高原年降水量、侵蚀性降水量、暴雨量的变化趋势和空间特征.研究表明:1956～2005年黄土高原降水在波动中呈现下降趋势,尤其自1980年年以来,降水减少趋势显著.黄土高原地区降水变化具有显著的空间差异,降水偏少最为显著区域位于黄河中游的河口-龙门区间,尤以无定河流域、汾河流域和山西中北部最为典型,年降水量和侵蚀性降水偏少10%以上.存在从北向南沿朔州-离石-临汾-三门峡一带的暴雨异常偏少地带,偏少在20%以上.
|
| 关 键 词： | 黄土高原 侵蚀性降水 暴雨量 时空变化 |
Spatio-temporal Variation of Erosive Precipitation in Loess Plateau during Past 50 Years |
| |
| XIN Zhong-bao,XU Jiong-xin,MA Yuan-xu. Spatio-temporal Variation of Erosive Precipitation in Loess Plateau during Past 50 Years[J]. Scientia Geographica Sinica, 2009, 29(1) |
| |
| Authors: | XIN Zhong-bao XU Jiong-xin MA Yuan-xu |
| |
| Affiliation: | 1.College of Soil and Water Conservation in Beijing Forestry University;Key Laboratory of Soil and Water Conservation and Desertification Combating;Ministry of Education;Beijing 100083;2.Institute of Geographic Sciences and Natural Resources Research;Chinese Academy of Sciences;Beijing 100101 |
| |
| Abstract: | In this study,the spatio-temporal variations of annual precipitation,erosive precipitation and rainstorm over the Loess Plateau were investigated on the basis of the observed data of daily precipitation at 99 stations for the period 1956-2005.The annual precipitation showed a decreasing trend over the Loess Plateau in the past 50 years.The significant decreasing region mainly appeared in the middle Huanghe(Yellow) River,especially in the Wuding River basin,the Fenhe River basin and the northern and central ... |
| |
| Keywords: | Loess Plateau erosive precipitation rainstorm spatial-temporal variations |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
