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Forests 2016, 7(12), 295;

Radial Growth Response of Larix gmelinii to Climate along a Latitudinal Gradient in the Greater Khingan Mountains, Northeastern China

Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
University of Chinese Academy of Sciences, Beijing 100049, China
College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
Department of Environmental Sciences, University of Helsinki, Lahti 15140, Finland
Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
Authors to whom correspondence should be addressed.
Academic Editor: Timothy A. Martin
Received: 12 November 2016 / Accepted: 17 November 2016 / Published: 28 November 2016
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To explore how climatic factors influence tree growth within the context of global climate changes, we used a dendroclimatological analysis to understand the response of Larix gmelinii to climatic variations along a broad latitudinal gradient from 47.27° to 52.66° N in the Greater Khingan Mountains of Northeastern China. The growth-limiting climate factors and a detailed association between radial growth and climate were identified along the gradient using redundancy analysis (RDA) and standard correlation function analysis over the period 1960–2013. The results showed that temperatures during current June to July represented the most important factor affecting tree radial growth in the study area. Across all studied latitudes, Larix gmelinii growth might be decreasing in radial growth due to higher monthly maximum temperature (Tmax) and monthly mean temperatures (Tm) in the current June, especially for the stands at low and middle latitudes. With continued warming, Larix gmelinii radial growth at high latitudes (e.g., Mangui (MG) and Mohe (MH)) might be reduced by warmer temperatures in July. In addition, Larix gmelinii might be decreasing in radial growth from decreasing precipitation. Our results show that there is a decreasing trend in Larix gmelinii radial growth under the observed general increase of temperatures in the Greater Khingan Mountains in recent years. View Full-Text
Keywords: boreal forest; dendroecology; tree-ring growth; climate warming boreal forest; dendroecology; tree-ring growth; climate warming

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Jiang, Y.; Zhang, J.; Han, S.; Chen, Z.; Setälä, H.; Yu, J.; Zheng, X.; Guo, Y.; Gu, Y. Radial Growth Response of Larix gmelinii to Climate along a Latitudinal Gradient in the Greater Khingan Mountains, Northeastern China. Forests 2016, 7, 295.

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