内蒙古东部地区主要树种(组)生长率模型研建  

Growth Rate Model Development for Main Tree Species(Groups)in Eastern Inner Mongolia

作　　者：宋芳博 张科 SONG Fangbo;ZHANG Ke(Inner Mongolia Second Institute of Forestry and Grassland Monitoring and Planning,Ulanhot 137400,Inner Mongolia,China)

机构地区：[1]内蒙古自治区第二林业和草原监测规划院,内蒙古乌兰浩特137400

出　　处：《内蒙古林业调查设计》2024年第6期76-81,共6页Inner Mongolia Forestry Investigation and Design

摘　　要：本研究利用2013年、2018年内蒙古自治区森林资源连续清查数据建立内蒙古东部地区主要树种(组)的单木胸径生长率模型。结果表明:12个树种(组)胸径生长率模型相关指数(R2)均达到0.90以上;预估精度(P)均达到91%以上,12个树种(组)的总相对偏差(TRB)均在±3%以内;平均系统偏差(MSB)除人工落叶松为7.22%外,其余均在±5%以下。12个树种(组)的胸径生长率模型拟合结果较好。在此基础上,建立了12个树种(组)的材积生长率模型,可为森林资源数据更新、林业政策制定和相关规划编制等提供依据。This study utilized the continuous forest resource inventory data from Inner Mongolia Autonomous Region in 2013 and 2018 to establish individual tree diameter growth rate models for the main tree species(groups)in Eastern Inner Mongolia.The results indicated that the correlation index(R)for the diameter growth rate models of 12 tree species(groups)all reached above 0.90;the estimated precision(P)all achieved more than 91%,and the total relative bias(TRB)for the 12 species(groups)was within 3%;the mean systematic bias(MSB)was within±5%except for the artificial larch with 7.22%.The fitting results of the diameter growth rate models for the 12 species(groups)were satisfactory.Based on this,the volume growth rate models for 12 species(groups)were established,which can provide a basis for forest resource data updating,forestry policy formulation,and the compilation of related plans.

关 键 词：生长率模型 胸径生长率 材积生长率 内蒙古东部地区 

分 类 号：S757.3[农业科学—森林经理学]