Affiliation: | (1) Forest Resources & Environment College, Northeast Forestry University, 150040 Harbin, P. R. China;(2) Forestry Department of Heilongjiang Province, 150001 Harbin, P. R. China;(3) Station de Sylviculture et de Production, INRA CHAMPENOUX, 54280 Seichamps, France;(4) French Institute of Pondicherry, 11. St. Louis Street, 605001 Pondicherry, India |