Consume of soil seeds of Betula albo-sinensis and Abies faxoniana in different natural successional stages of subalpine dark coniferous forest in western Sichuan, China Species composition and point pattern analysis of standing trees in secondary Betula albo-sinensis forest in Xiaolongshan of west Qinling Mountains. POPULATION STRUCTURE AND SPATIAL ANALYSIS OF BETULA ALBO-SINENSIS AT TAIBAI MOUNTAIN, NORTHWESTERN CHINA Effects of elevated atmospheric CO concentration and increased temperature on Betula albo-sinensis rhizospheric microbe Effects of light and temperature on seed germination of Picea asperata and Betula albo-sinensis T-square study on spatial pattern and regeneration of Betula albo-sinensis Burkill population on west slope of Jiuding Mountain SEED GERMINATION CHARACTERISTICS OF BETULA ALBO-SINENSIS AT MOUNTAIN TAIBAI, CHINA WARMING EFFECTS ON GROWTH AND PHYSIOLOGY OF SEEDLINGS OF BETULA ALBO-SINENSIS AND ABIES FAXONIANA UNDER TWO CONTRASTING LIGHT CONDITIONS IN SUBALPINE CONIFEROUS FOREST OF WESTERN SICHUAN, CHINA Factors affecting soil organic carbon density in Betula albo-sinensis forests on the southern slope of the Qinling Mountains Preliminary Studies of Betula albo-sinensis Forest in Taibai Mountain The water-holding capacity of litter layers in the forests of Larix principis-rupprechtii and Betula albo-sinensis in Liupan Mountain and their rainfall interception process