Dynamics change of Betula ermanii population related to shrub and grass on treeline of northern slope of Changbai Mountains Climate Signals from Tree Ring Chronologies of the Upper and Lower Treelines in the Dulan Region of the Northeastern Qinghai-Tibetan Plateau Spatial-temporal dynamics of an Abies fabri population near the alpine treeline in the Yajiageng area of Gongga Mountain, China Dynamics of stem radial growth of Picea meyeri during the growing season at the treeline of Luya Mountain, China Ground Coverage and Soil Hydrological Action of Alpine Treeline Ecotone in Western Sichuan Seasonal dynamics and resorption efficiencies of foliar nutrients in three dominant woody plants that grow at the treeline on Changbai Mountain Difference in Tree Growth Responses to Climate at the Upper Treeline: Qilian Juniper in the Anyemaqen Mountains Stem radius growth features of Picea meyeri and its relationship with environmental factors at the treeline of Luya Mountain Response of Picea crassifolia Population to Climate Change at the Treeline Ecotones in Qilian Mountains Research advances in dendrochronology. Seasonal variations in the stems of Larix principis-rupprechtii at the treeline of the Luya Mountains