Eco-physiological traits of different-age needles of Pinus sylvestrisvar.mongolica plantation in Horqin sandy land of China
WEI Ya-Fen, FANG Jie, ZHAO Xue-Yong, LI Sheng-Gong
Chin J Plant Ecol . 2011, (12): 1271 -1280 .  DOI: 10.3724/SP.J.1258.2011.01271

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