INFLUENCES OF SUBSTITUTING SIZE VARIABLES FOR AGE ON POPULATION SURVIVAL ANALYSIS: A CASE STUDY OF PINUS TABULAEFORMIS AND P. ARMANDII IN QINLING MOUNTAIN, CHINA
HE Ya-Ping, FEI Shi-Min, JIANG Jun-Ming, CHEN Xiu-Ming, ZHANG Xu-Dong, HE Fei
Chin J Plant Ecol . 2008, (2): 448 -455 .  DOI: 10.3773/j.issn.1005-264x.2008.02.024

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