祁连山西段疏勒河上游流域的多年冻土地温特征及影响因素  

Characteristics of permafrost ground temperatures and influencing factors in the upstream of the Shule river in western Qilianshan mountains

作　　者：李静[1] 盛煜[1] 吴吉春[1] 张波[1] 王杰[2] 张秀敏[1] 叶柏生[2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,兰州730000 [2]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,兰州730000

出　　处：《兰州大学学报（自然科学版）》2011年第2期37-43,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB411502);国家自然科学基金项目(40871040);中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室自主课题(Y0SF104001)

摘　　要：以位于祁连山西段疏勒河上游流域内不同地点的钻孔及地温测量数据为基础、借助于地温曲线图分析了各钻孔点不同深度处的地温特征及其主要影响因素.结果表明:海拔高度、坡向、坡度是影响疏勒河上游流域多年冻土地温的中观尺度因素,植被、砂层等地表覆盖条件和季节性河流等局地因素对多年冻土地温影响复杂,使得局地尺度上的多年冻土地温分布特征规律不明显.Using the boreholes and the measured ground temperatures in the upstream of the Shule river in western Qilianshan mountains as the data basis of this pape and the temperature profile as the too for analyzing ground temperatures,characteristics of ground temperatures at different depths and the majorfactors influencing permafrost ground temperatures were analyzed.The results indicate that elevation,aspect and slope are main meso-scale factors influencing the permafrost ground temperatures in the upstream.Comparatively,local factors such as vegetation cover,sand-layer and seasonal rivers have complex effects on permafrost ground temperatures and make the distribution patterns of ground temperatures more complicated.

关 键 词：地温特征 多年冻土 影响因素 疏勒河上游流域 祁连山 

分 类 号：P642.54[天文地球—工程地质学]