关键词: 毛白杨, 数学模型, 生长量, 收获量

Abstract: The tendency of development of forest growth and yield research as well as the superiority of compatible growth and yield models were discussed. Chinese white poplar (Populus tementosa Carr.) is an important fast growing tree species in China. The applicability of compatible growth and yield models for loblolly pine developed by Clutter to Chinese white poplar plantations was examined. Clutter's models were fitted to data obtained from 129 temporary plots (60 of them obtained from poplar wood lots, other 69 from shelter-belts) in Hebei and Shandong Provinces, as well as Tianjin City. In fitting poplar data, Clutter's basal area growth model has been modified, because of age structure and growth characteristics of poplar stands. The result of examination demonstrated that Clutter's compatible growth and yield models were basically applicable to Chinese white poplar. These models were also fitted to merchantable volume data. As a result of the present study, equations were developed, on the basis of Clutter's models, for total stand volume yield and growth, basal area growth, merchantable volume yield and growth prediction of Chinese white poplar wood lots and shelter-belts. In the meantime, site index curves for this species have also been prepared.

Key words: Chinese white poplar, Mathematical models, Growth, Yield