Journal of Geophysical Research: Biogeosciences RESEARCH ARTICLE Spatial Variability in Growth-Climate Relationships of Amur 10.1029/2017JG004292 Cork Tree (Phellodendron amurense) and Their Key Points: Connections With PDO in Northeast China • Minimum temperature (Tmin) was a major limiting factor for Amur cork Liangjun Zhu1,2 , Xiaochun Wang1 , Neil Pederson3, Zhenju Chen4, David J. Cooper2 , tree growth at regional scales 5 6 • The positive effects of summer Yuandong Zhang , and Zongshan Li temperature (precipitation) on Amur 1 2 cork tree growth decreased Center for Ecological Research, Northeast Forestry University, Harbin, China, Department of Forest and Rangeland (increased) with increasing latitude Stewardship, Colorado State University, Fort Collins, CO, USA, 3Harvard Forest, Harvard University, Petersham, MA, USA, • The spatial variability in 4Tree-ring Laboratory, Forestry College/Research Station of Liaohe-River Plain Forest Ecosystem CFERN, Shenyang growth-climate relationships of Amur Agricultural University, Shenyang, China, 5Key Laboratory of Forest Ecology and Environment, State Forestry cork tree may be connected to the 6 range of PDO Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China, State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China Supporting Information: • Supporting Information S1 • Data Set S1 Abstract We used a dendrochronological approach to identify the spatial variability in growth-climate relationships of Amur cork tree (Phellodendron amurense), using a network of 12 sites across its natural Correspondence to: X. Wang, range in Northeast China. Results showed that the signal-noise ratio, expressed population signal, and mean
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