关键词: 一元材积模型, 二元材积模型, 手持式超站仪, 材积建模

Abstract: To accurately and quickly measure the standing wood chest diameter, tree height, material accumulation and other basic information has been the hot issues of forestry investigation. Handheld superstation is a new type of forest resource measuring instrument which could solve the needs of forest measurement for nondestructive measurement, high precision, portable and easy to operate. To establish tree volume tables and acquire accurate volume models within Liaoyang district, oneway and standard volume models and DBHheight models for 10 tree species were established by using the method of linear regression and evaluated the models by using six evaluation indicator regression models. The ten main tree species in Liaoyang district were Pinus sylvestris, Chinese pine, Dahurian larch, Oak, Robinia pseudoacacia, hardwood, softwood, fast poplar, medium poplar and slow poplar.The results showed that the MSE and TRE in 10 tree species were kept within 3% and the R2 in oneway and standard volume models were higher than 90% except Mongolian scotch pine; and the MPSE in oneway volume model and DBHheight model had good fitting effect except softwood forest. In general, all models achieved good fitting effect, and this method could be applied in the field forest resource investigation and tree volume establishment.

Key words: unary volume model, standard volume model, handheld super station, volume model constriction