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

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Jiang , Y , Zhang , J , Han , S , Chen , Z , Setala , H , Yu , J , Zheng , X , Guo , Y & Gu , Y 2016 , ' Radial Growth Response of Larix gmelinii to Climate along a Latitudinal Gradient in the Greater Khingan Mountains, Northeastern China ' Forests , vol. 7 , no. 12 , 295 . DOI: 10.3390/f7120295

Title: Radial Growth Response of Larix gmelinii to Climate along a Latitudinal Gradient in the Greater Khingan Mountains, Northeastern China
Author: Jiang, Yangao; Zhang, Junhui; Han, Shijie; Chen, Zhenju; Setala, Heikki; Yu, Jinghua; Zheng, Xingbo; Guo, Yingtao; Gu, Yue
Contributor: University of Helsinki, Environmental Sciences
Date: 2016-12
Language: eng
Number of pages: 12
Belongs to series: Forests
ISSN: 1999-4907
URI: http://hdl.handle.net/10138/173999
Abstract: 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 degrees to 52.66 degrees 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.
Subject: boreal forest
dendroecology
tree-ring growth
climate warming
TREE GROWTH
CANADA
FOREST
TEMPERATURE
VARIABILITY
EUROPE
1172 Environmental sciences
1181 Ecology, evolutionary biology
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