142M471B3J 1 Carbon Dioxide 1 Himalayan fir (Abies spectabilis) 1 Journal Article 1 Research Support, Non-U.S. Gov't 1 central Himalaya 1 climate change 1 mehr ... elevation gradients 1 high-elevation forests 1 intrinsic water-use efficiency (iWUE) long-term growth trends 1 tree rings 1 weniger ...