五个主要树种的生物量转换系数分析

利用东北落叶松,南方杉木、马尾松、栎类和西北山杨5个树种(组)的实测数据,对3种平均生物量转换系数计算方法进行了比较分析,并利用假设检验方法,对落叶松和马尾松、2个区域杉木的生物量转换系数进行了差异显著性检验。结果表明:利用算术平均法计算平均生物量转换系数是合适的,阔叶树的生物量转换系数大于针叶树;落叶松和马尾松的生物量转换系数无显著差异,而2个区域杉木的生物量转换系数差异显著。

Analysis on Biomass Conversion Factors of Five Tree Species in China

Based on the data of five tree species,larch(Larix)in northeast,Chinese fir(Cunninghamia lanceolata),Masson pine(Pinus massoniana)and oak(Quercus)in south,and poplar(Populus davidiana)in northwest,the three methods for calculating biomass conversion factors(BCF)were compared firstly.Secondly,the differences of mean BCFs between larch and Masson pine,and those between two types of Chinese fir in two regions were examined using hypothesis test.The results showed:(i)it is suitable to use arithmetic mean method for calculating the mean BCFs;(ii)the BCFs of broadleaved species are larger than those of coniferous species;(iii)the mean BCFs of larch and Masson pine are not different significantly,while those of two Chinese fir types are different significantly.