摘要
根据有关水文气象台、站的观测资料,分析了El Nino事件与祁连山区气温、降水的对应关系,研究了祁连山区出山径流对EI Nino现象的响应。结果表明,EI Nino现象对祁连山区的气温、降水和径流的影响随着发生时间和地段的不同而不同。EI Nino事件发生之年,整个祁连山区均出现气温偏高、降水减少及径流偏枯的现象,尤以东段和中段最为明显。El Nino事件次年,祁连山区东段和中段气温偏高、降水减少及径流偏枯的程度不如ElNino事件当年那样显著,而西段的气温、降水及径流与El Nino事件则无明显关系。
The corresponding relationship between E1 Nino the Qilian mountainous area are analyzed based on the events and temperature, precipitation, runoff in observation data of the weather stations and hydrological stations. The results show that the effect of E1 Nino to temperature, precipitation and runoff in the Qilian mountainous area is different with the dissimilarity of E1 Nino occurring time and the regions in this area. El Nino events have impact on all of the temperature, precipitation and runoff in the east part of the Qilian mountainous area in current years and the next years, but the impact in E1 Nino years are more visible than that in the next years. The impact of E1 Nino events on the temperature, precipitation and runoff in middle and west part of the Qilian mountainous area in the E1 Nino years and the next years are all inapparent.
出处
《中国沙漠》
CSCD
北大核心
2009年第2期352-358,共7页
Journal of Desert Research
基金
国家自然科学重点基金项目(90702001)
中国科学院知识创新工程重要方向项目(KZCX2-YW-328)
国家自然科学基金项目(40675066)
国家林业局荒漠化和沙漠化专题项目(出山径流的变化状况、影响因素及趋势展望)资助
