Sabina przewalskii community structure in the upper reaches of Minjiang River Variations of Chloroplast Pigments and Non-structural Carbohydrates of Sabina przewalskii along Altitude in Qilian Mountains Timberline ANTIOXIDATIVE SYSTEM IN LEAVES OF PICEA CRASSIFOLIA AND SABINA PRZEWALSKII ALONG AN ALTITUDINAL GRADIENT Analysis of the Chemical Constituents in the Volatile Oils from Leaves of Sabina przewalskii in Two Different Regions Responses of Qilian junipers radial growth of different ecological environment and detrending method to climate change in Qinghai Province Changes of Pigments in Sabina przewalskii and Picea crassifolia Needles Along with Different Altitudes Seasonal Changes in the Contents of Pigments and Anthocyanins Synthetase Activity of Sabina przewalskii and Sabina chinensis Climate Signals from Tree Ring Chronologies of the Upper and Lower Treelines in the Dulan Region of the Northeastern Qinghai-Tibetan Plateau Influences of slope aspect on the growth of Sabina przewalskii along an elevation gradient in China’s Qinghai Province