文献类型：期刊文献

中文题名：模型形式和地域对落叶松地上生物量预测的影响

英文题名：Effects of Model Form and Region on Prediction for Aboveground Biomass of Larix

作者：郑立生[1] 李海奎[2]

第一作者：郑立生

机构：[1]黑龙江省鹤北林业局营林公司;[2]中国林业科学研究院资源信息研究所

年份：2013

期号：2

起止页码：83-88

中文期刊名：林业资源管理

外文期刊名：Forest Resources Management

收录：北大核心:【北大核心2011】；

基金：国家自然科学基金(31070485)

语种：中文

中文关键词：落叶松;生物量;模型;地域

外文关键词：Larix, biomass, model, region

分类号：S758.62;S791.22

摘要：针对树高测定困难且不准确的问题,以东北地区的落叶松实测生物量大样本数据为基础,分别建立一元模型和二元模型,以大样本的树高、胸径实测数据为预测变量,研究模型形式和样本抽取范围对落叶松地上生物量预测的影响。结果表明:一元模型在建模样本抽取的范围内,省级尺度和区域尺度的预测值都和二元模型没有显著差异,而在非建模区域,省级尺度和区域尺度均存在显著差异,且所有径阶一元模型的预测值都大于二元模型。在全部的区域,小径阶树木一元模型的预测值均大于二元模型,在建立模型时应引起重视。
Aiming large sample field DBH （ diameter at tively. Then taking at the problem that the tree height measurement is difficult and inaccurate, based on measurement data about biomass for Larix in northeast China, the biomass model on breast height）and the biomass model based on DBH and total height were fitted respec- a large sum of DBH and height data from larger region as independent variables, effects of model form and region on prediction for aboveground biomass of Larix were studied. The results showed that no significant difference in predicted biomass was found between the model on DBH and the model based on DBH and height at province and large region levels in the region,where the sample trees for fit- ted biomass equations were sampled. While in the other region, there was a significant difference between the model on DBH and the model based on DBH and height at province and large region levels, the pre- diction from the model on DBH was more than that from the model based on DBH and height in all diame- ter classes. In all region with prediction samples, the prediction biomass from the model on DBH was more than that from the model based on DBH and height at smaller diameter classes, this should be paid atten- tion to when fitting biomass equations.