机译:基于形状约束加性回归模型的挪威云杉,苏格兰松树和白桦树的纵向高度-直径曲线
Northwest German Forest Research Institute, Forest Growth, Gr?tzelstr 2,37079 G?ttingen, Germany;
Norwegian Institute for Bioeconomy Research,National Forest Inventory, Postboks 115, 1431 ?s, Norway;
Norwegian Institute for Bioeconomy Research,National Forest Inventory, Postboks 115, 1431 ?s, Norway;