毛白杨人工林生物量的初步研究

<正>本文对位于中心分布区的毛白杨人工林的生物量进行了初步研究,并试图通过比较和分析不同立地类型和不同经营措施下的毛白杨林分的平均生产量,为营林生产提供科学依据。结果表明,毛白杨人工林的生物量受立地类型和经营措施的影响极大,立地类型相同经营措施不同的林分平均生产量相差三倍多,而经营措施相同立地类型不同的林分的平均生产量相差四倍还多。

A PRELIMINARY STUDY OF THE BIOMASS OF CULTIVATED CHINESE WHITE POPLAR STANDS

A preliminary study has been made of the biomass of cultivated Chinese poplar stands in a central area in an attempt to provide scientific references for forest management and production by comparing and analising.the mean production of stands with various site types and different methods of management. Results show that the biomass of stands is greatly influenced by site types and by methods of management. There is more than three-fold difference in mean production of the stands with the same site types but different methods of management, and more than four-fold with different site types and the same methods.