【摘要】 通过分析青南高寒草甸秃斑地（简称“黑土滩”）分布地域气温、降水等气候因子与牧草的关系和研究“黑土滩”形成的气象成因，发现干旱气候对青南牧区“黑土滩”的形成起了推波助澜的作用，并加剧了“超载过牧—草地退化—鼠害危害—草畜矛盾突出”的恶性循环，从而促进了“黑土滩”的形成。更多还原

【Abstract】 By analysing the temperature, precipiattion and other climatic factors related to grass growth in areas where barelands (heitutan) distribute, it is found that dry climate helps and strenghens the formation of Heitutan by making the vicious circle of “overgraze-grassland degradation-rats-confliction of grass and livestocks” much more serious. The results of the research will provide some theories for comprehensively managing with the “heitutan” and improving the ecological environment, in southern Qinghai plateau.更多还原