根据项目区2006年的森林资源二类调查资料,以及2005年、2013年、2014年的3期TM遥感影像,典型选取29个小班开展了外业验证调查,对比分析了典型验证调查结果和二类调查结果。根据U检验结果,29个小班验证调查的蓄积平均值和二类调查蓄积平均值基本是一致的,没有显著性差异,说明俄方提供的森林资源二类调查数据的总体蓄积是可信的;根据F检验结果,单个验证调查小班公顷蓄积与二类调查公顷蓄积差值波动较大,可信度较低。

According to data of forest resources inventory for planning of Russia,29 forest resource sub-compartments were selected to carry out the field verification survey,The data of forest resources inventory for planning and the data of validation are compared and analyzed.According to U test results,There was no significant difference between mean volume of the survey and the mean volume of the validation survey,indicating that the data of forest resources inventory for planning is credible.According to F test results,the difference of single mean volume is large between survey and validation,and the reliability is low.