摘要
为更好地探明气候变化下高寒山区积雪的消融规律及其对径流的影响,以及积雪面积、气温、径流之间存在的关系,本文根据2006-2009年的8日合成MODIS积雪产品数据,以及同时期出山口水文站的径流、气温数据,分析了KM河流域的融雪径流特征,定量分析了积雪面积、气温与融雪径流的关系。结果表明:进入3月份,海拔≤2 000 m积雪已经消融完结;在3月10日前后,海拔2 000～3 500 m积雪开始消融,到融雪期末积雪基本消融完结;在4月初,海拔3 500～4 500 m才开始融雪,到融雪期末积雪没有消融完结;海拔≥4 500 m积雪面积在融雪期内变化相对比较稳定。流域各高程带积雪面积与气温都呈抛物线关系,且相关性随高程的上升而减弱。
In order to better detect the high snow ablation law and its influence on runoff and the climate change , and study the relations between area, temperature and runoff, according to the MODIS snow product data of eight days from 2006 to 2009, as well as the runoff and temperature data of hydrologic sta- tion at the same period, the paper analyzed the snow-melt runoff characteristics of KM river basin, the quantitative relations of snow area, temperature and snowmelt runoff. The results indicate that ablation of snow ends at 2000m above sea level in March; snow at 2000 to 3500m above sea level began melting on March 10 ,the ablation is completed at the end period of snow ablation; ,snow at elevation of 3500 to 4500m starts thaw in early April, and has not completed the melt at the thaw end of the period; the change of snow area in snowmelt period is relatively stable at the elevation of equal or larger than 4500m. The area of snow and temperatures in every elevation zone of watershed has parabolic relation , and the relevance become weak along with the rise of elevation.
出处
《水资源与水工程学报》
2013年第4期28-31,36,共5页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金(51209181)
水利部公益性行业科研专项经费(201001065)
新疆农业大学校前期课题(XJAU201005)
新疆水文学及水资源重点学科基金(xjswszydxk20101202)
