Tree-ring widths of Picea engelmannii at Andrews Meadow, Rocky Mountain National Park

Andrews Meadow in the Loch Vale watershed, Rocky Mountain National Park. Sample Collection: Englemann spruce (Picea engelmannii) living on slopes surrounding and at...落基山国家公园洛赫谷流域的安德鲁斯草甸。样本采集：采集生长于周边及……斜坡上的恩格尔曼云杉（Picea engelmannii）。