【摘要】 本文通过大青杨在大川林场的密度间伐试验 ,得出了大青杨树高和单位面积材积的定期生长量与间伐强度的关系 ,初步确定了培养杨树短周期工业用材林较为理想的间伐密度 ,为我省东部山区营建短轮伐期工业用材林提供了一定的理论依据和实践指导更多还原

【Abstract】 The relationship between height increment and volume-growth per hector and thinning intensity was determined by means of thinning study in Populus ussuriensis plantation with different stock densities in Dachuan Forest Farm And the ideal thinning intensity was primary determined for the industrial timber-harvest plantation in short cycle to the plantations The result would provide the silviculture of the industrial timber-harvest plantation with theory foundation and practical guide for east mountain area of Jilin province更多还原