Abstract:

Based on the investigation data from the sample plots of Eucalyptus spp.,Cunninghamia lanceolata, Pinus massoniana, Larix spp. and Pinus sylvestris var. Mongolica etc, and combining with other results of research projects on plantation, main natural factors and social factors which effect the productivity of Chinese plantation were studied systematically. The results showed: (1) The plantation productivity of the collective owned stand in the south of China was only 44.6% of that of state owned plantation, and whice contributed a 28% reduction in the plantation productivity in whole China. (2) The problem of unmatching species with the site was less serious than that people think of it usually in China, and it contributes only about 5% reduction in the productivity of Chinese forest plantation. (3) The low silviculture techniques were not the key facts that made the low productivity result of Chinese forest plantation. In fact, it was the product and incarnation of the economic development level of China in past decades as a result of interacting between natural factors, social factors and economic law.

Key words: Forest plantation, Productivity, Social facts, Probing into the problems