| 近50 a来我国东北多年冻土区南缘海拉尔河流域径流变化特征分析 |
| |
| 引用本文： | 陆胤昊,叶柏生,李翀.近50 a来我国东北多年冻土区南缘海拉尔河流域径流变化特征分析[J].冰川冻土,2014,36(2):394-402. |
| |
| 作者姓名： | 陆胤昊 叶柏生 李翀 |
| |
| 作者单位： | 中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃兰州730000;安徽大学资源与环境工程学院,安徽合肥230601;中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃兰州730000;中国水利水电科学研究院水环境研究所,北京100038 |
| |
| 基金项目： | 国家重点基础研究发展计划（973计划）项目（2010CB951404）；国家自然科学基金项目（41030527；41271035）；中国科学院百人计划项目资助 |
| |
| 摘 要： | 选取位于我国东北多年冻土区南缘的海拉尔河流域作为研究对象,根据海拉尔河水文站1958-2008年的逐月实测径流量资料,用径流量的年内年际变化、各季占年径流量的百分比、年内不均匀系数、集中度以及降水量-径流量双累积曲线等不同指标,分析研究了海拉尔河上游径流量年际变化和年内分配的规律.研究表明:近50 a来海拉尔河径流量总体上呈递减趋势,并且径流量的递减与面上降水量的递减总体上一致;春、秋季节径流量均呈现出下降趋势,冬季径流量呈增加趋势.冬季径流量增加可能是冬季积雪增多以及流域多年冻土退化,积雪对冻结的抑制有利于冬季的产流,从而使冬季产流增加所致.径流量年内分配不均匀程度增加,秋季径流量比重显著下降,水资源年内分布集中程度增加,这一现象可能是由于夏季风的减弱所致.通过运用双累积曲线法,研究区降水与径流的关系在1980年前后发生了明显变化,产流表现为增加趋势,但1999年后产流能力显著下降.
|
| 关 键 词： | 气候变化 径流特征 双累积曲线 |
| 收稿时间： | 2013-08-09 |
Changes of runoff of the Hailar River basin in the southern margin ofpermafrost zone,Northeast China during 1958-2008 |
| |
| LU Yinhao,YE Baisheng,LI Chong.Changes of runoff of the Hailar River basin in the southern margin ofpermafrost zone,Northeast China during 1958-2008[J].Journal of Glaciology and Geocryology,2014,36(2):394-402. |
| |
| Authors: | LU Yinhao YE Baisheng LI Chong |
| |
| Institution: | 1. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;2. School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China;3. Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China |
| |
| Abstract: | Based on the surface runoff, temperature and precipitation data of the Hailar River from 1958 to 2008, in this paper, using the method of linear trends of change, the long-term trend of time series of surface runoff was investigated, and then the varying characteristics of annual and decadal runoffs in this region were obtained. Using precipitation and runoff double-mass curve of the Hailar River, the impact of changes in precipitation and permafrost on runoff was also analyzed. It is found that the runoff of the river had a decreasing trend from 1958 to 2008, with high flow during the period from the 1980s to the 1990s and low flow after the 2000s. Runoff in spring and autumn had decreased while in winter had increased obviously, and precipitation in winter had increased. Increasing runoff in winter may be partly due to increasing solid precipitation in winter, which warmed up the permafrost and inhibited soil freezing. The ratio of runoff decreased in autumn and increased in winter, which probably due to the summer monsoon weakened. |
| |
| Keywords: | climate change runoff characteristics double-mass curve (DMC) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《冰川冻土》浏览原始摘要信息 |
| 点击此处可从《冰川冻土》下载免费的PDF全文 |
|
