Ecological characteristics of Abies georgei population at timberline on the north-facing slope of Baima Snow Mountain, Southwest China Spatial Point Patterns and Associations of Forest Landscapes in Pangu Forest Farm in Daxing‘an Mountains Modeling and Predicting Spatial Patterns of Trees ECOLOGICAL CHARACTERISTICS OF A SABINA SALTUARIAPOPULATION AT TIMBERLINE ON THE SOUTH-FACING SLOPE OF BAIMA SNOW MOUNTAIN, SOUTHWEST CHINA Fine-scale spatial point patterns of Stipa krylovii population in different alpine degraded grasslands Nearest neighbor distance in spatial point patterns of plant species-probability distribution model and parameter estimation Spatial and dynamic analysis of plantations in Xishuangbanna using network K-function