根田鼠的分布与西北地区的气候特点  

The Microtus oeconomus distribution and the characteristics of climatic in northwest of China

作　　者：李永项[1] 薛祥煦[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室/地质学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2007年第1期103-106,共4页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省自然科学基金资助项目(JK028;JK01)

摘　　要：目的从根田鼠动物地理分布探讨西北地区气候演变及其特点。方法利用现代根田鼠的动物地理分布、地史分布及其生态习性进行分析。结果根田鼠M icrotus oeconomus是一种对环境敏感的喜冷喜湿的北方型动物,其现代分布与西北地区的气候特点密切相关。结论西北地区中晚更新世以来的气候环境日趋暖干,其总的特征为“盆干山湿,湿润区呈斑块状分布”。Aim To discuss the climate character and tends in northwest of China. Methods The distribution and ecological environment of Microtus oeconomus were analyzed. Results The Microtus oeconomus is a climate-sensi- tive mammal, which highly adapted to a moist and cold climate and its distribution is closely related to the climate in northwestern China. Conclusion The climate tends to be dry and warm since Middle-late Pleistocene in Northwest of China, and the climate character is “the basin dry, the mountain humid, and the moist area in islandshape”.

关 键 词：根田鼠 分布变迁 环境气候演变 西北地区 中晚更新世以来 

分 类 号：Q958[生物学—动物学]