雅鲁藏布江河谷风沙地貌分类与发育问题  

CLASSIFICATION AND DEVELOPMENT OF AEOLIAN SAND LANDFORM IN THE YURLUNG ZANGBO VALLEY

作　　者：李森[1] 王跃[1] 哈斯[1] 杨萍[1] 靳鹤龄[1] 

机构地区：[1]中国科学院兰州沙漠研究所

出　　处：《中国沙漠》1997年第4期342-350,T001,共10页Journal of Desert Research

基　　金：国家自然科学基金;中国科学院西安黄土与第四纪地质国家重点实验室基金

摘　　要：雅鲁藏布江河谷风沙地貌分类体系由４级２１个类型组成，其中风积地貌划分为谷底与谷坡风积地貌２个亚类。河谷风沙地貌面积１９２９．９４６ｋｍ２，可称为“雅鲁藏布江河谷沙地”。河谷区具有沙源、风动力和堆积场地等风沙地貌形成的基本条件。风沙地貌总体上沿河谷呈带状不连续分布，其形成发育受到风力和流水两种营力交替作用，沙丘、沙丘群在同一地貌部位的分布与排列有一定的规整性。Aeolian sand landform in the Yarlung Zangbo river valley can be divided into 4 classes and 21 types, among them, aeolian deposition form can be further divided into two sub types at valley bottom and at valley slop. The area of whole aeolian sand landform or sandy land in the valley is 1 929.946 km 2. Sand resource ,wind froce and suitable place are the fundamental conditions for aeolian sand landform formation in the valley. In general view, aeolian sand landform distributes along the valley discontinuously. Their development are mainly controlled by wind and water froces alternatively in a year. In different parts of the valley, sand dunes have different patterns, but in small similar geomorphic locations they have similar pattern and combination character.

关 键 词：风沙地貌 地貌分类 发育过程 雅鲁藏布江 

分 类 号：P931.3[天文地球—自然地理学]