ESTIMATION OF POPULATION SIZE OF ARGALI SHEEP IN TIBET BY LINE TRANSECT SAMPLING Sexual interference in two Chamerion species with contrasting modes of movement herkogamy Characteristics of soil nematode community in Abies georgei var. smithii forest gaps in southeast Tibet, China. Forest carbon storage, carbon density, and their distribution characteristics in Linzhi area of Tibet, China. Community characteristics of soil nematode in Abies georgei var. smithii forest in Sejila Mountain of Tibet, Southwest China.