靖远、会宁、固原三角地带半干旱环境的啮齿动物群

THE SEMI-ARID HABITAT OF RODENT GROUPS IN TRIANGULAR BELT OF JINYUAN, HUINING AND GUYUAN IN GANSU AND NINGXIA

靖远、会宁、固原地处我国黄土高原的西部半干旱干草原生态环境，植被稀疏，生态环境脆弱，动物种类亦较为贫乏。根据自然环境、啮齿动物种类和分布的情况，该区大致可分为四个生态地理型──森林灌丛、干草原、荒漠草原和农田。

The triangularbelt of Jingyuan,Huining and Guyuan is located on the west loessplateau,belonging to temperate semi-arid Climate,According to the topographical features andveget:ation distribution,the habitats of rodents in the triangular belt can be divided into four ecologicalgeographical types; 1 Forest and bush ecological geographical tylpe:mainly including Eutamias sibiricus,Sciurofamisdavidanus and Awtemus agraius. 2 Dry steppes ecological geographical type:mainly including Ochotona davrica,Citellus dauricusand lepes tolai. 3 Desert steppes ecological geographical type:mainly including Meriones,meridanus Merionesopimus and Allactaga sibiriea. 4 Farmland ecological geographical type:mainly including Cricetulus migratorius,Myospalaxfontanierii and Cricertulus barabensis