模型形式和地域对落叶松地上生物量预测的影响

林业资源管理 ›› 2013, Vol. 0 ›› Issue (2): 83-88.

模型形式和地域对落叶松地上生物量预测的影响

郑立生¹, 李海奎²

1.黑龙江省鹤北林业局营林公司,黑龙江萝北 154212;
2.中国林业科学研究院资源信息研究所,北京 100091

收稿日期:2013-03-15 修回日期:2013-04-01 发布日期:2020-11-19
通讯作者: 李海奎(1965-),男,河南济源人,副研究员,博士,主要从事生物量模型研究。Email:hk_li@163.com
作者简介:郑立生(1969-),男,黑龙江伊春人,工程师,主要从事森林经营研究。Email:hbjzls70@126.com
基金资助:
国家自然科学基金(31070485)

Effects of Model Form and Region on Prediction for Aboveground Biomass of Larix

ZHENG Lisheng¹, LI Haikui²

1. Forest Management Company of Hebei Forestry Bureau,Heilongjiang Province,Luobei,Heilongjiang 154212;
2. Research Institute of Forest Resource Information Techniques,Chinese Academy of Forestry,Beijing 100091,China

Received:2013-03-15 Revised:2013-04-01 Published:2020-11-19

摘要/Abstract

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。

关键词: 落叶松, 生物量, 模型, 地域

Abstract: Aiming at the problem that the tree height measurement is difficult and inaccurate,based on large sample field measurement data about biomass for Larix in northeast China,the biomass model on DBH(diameter at breast height)and the biomass model based on DBH and total height were fitted respectively.Then taking 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 fitted 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 prediction from the model on DBH was more than that from the model based on DBH and height in all diameter 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 attention to when fitting biomass equations.

Key words: Larix, biomass, model, region

中图分类号:

郑立生, 李海奎. 模型形式和地域对落叶松地上生物量预测的影响[J]. 林业资源管理, 2013, 0(2): 83-88.

ZHENG Lisheng, LI Haikui. Effects of Model Form and Region on Prediction for Aboveground Biomass of Larix[J]. FOREST RESOURCES WANAGEMENT, 2013, 0(2): 83-88.

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