The growth responses of Gaozhou masson pine pulpwood to 4 thinning intensities were studied by comparative analysis.The results indicated that,under the identical characteristics of soil profile and ground vegefation ...The growth responses of Gaozhou masson pine pulpwood to 4 thinning intensities were studied by comparative analysis.The results indicated that,under the identical characteristics of soil profile and ground vegefation in different thinning intensities,the variations of DBH and height under branch have significant differences with the maximum accretion of DBH and the lowest accretion of height under branch in 15*!m×20*!m stand,while the average increments of tree height and crown diameter were not obviously different.The aboveground biomass increments of 1.5*!m×1.5*!m and 1.5*!m×2.0*!m stands were higher than those of other stands by thinning within 3 years.Under the comprehensive survey of the growth responses of pulpwood to thinning intensity and the wood property for papermaking,the proper density of Gaozhou masson pine pulpwood should be 1.5*!m×2.0*!m with 15 years cutting period of return on hilly land of central Hubei Province.展开更多
Discussed in the paper is the present situation of Chinas pulpwood forest base construction as well as the latest development withinlocal regions. Proposals for future development are also put forward.
文摘The growth responses of Gaozhou masson pine pulpwood to 4 thinning intensities were studied by comparative analysis.The results indicated that,under the identical characteristics of soil profile and ground vegefation in different thinning intensities,the variations of DBH and height under branch have significant differences with the maximum accretion of DBH and the lowest accretion of height under branch in 15*!m×20*!m stand,while the average increments of tree height and crown diameter were not obviously different.The aboveground biomass increments of 1.5*!m×1.5*!m and 1.5*!m×2.0*!m stands were higher than those of other stands by thinning within 3 years.Under the comprehensive survey of the growth responses of pulpwood to thinning intensity and the wood property for papermaking,the proper density of Gaozhou masson pine pulpwood should be 1.5*!m×2.0*!m with 15 years cutting period of return on hilly land of central Hubei Province.
文摘Discussed in the paper is the present situation of Chinas pulpwood forest base construction as well as the latest development withinlocal regions. Proposals for future development are also put forward.
