| 小兴安岭长白落叶松相容性生物量模型的构建 |
| |
| 引用本文： | 付尧,马炜,王新杰,孙玉军.小兴安岭长白落叶松相容性生物量模型的构建[J].东北林业大学学报,2011,39(7):42-45. |
| |
| 作者姓名： | 付尧 马炜 王新杰 孙玉军 |
| |
| 作者单位： | 省部共建森林培育与保护教育部重点实验室(北京林业大学),北京,100083 |
| |
| 基金项目： | “948”国家林业局引进项目，林业公益性行业科研专项经费 |
| |
| 摘 要： | 为了提高林木生物量的估测精度,基于长白落叶松标准地调查和标准木生物量,逐步筛选胸径、树高等林木特征因子,构建了单株木、地上部分、树干、根系、树枝、树叶生物量的独立估测模型。根据林木生物量相容性理论,以树干生物量作为控制量,利用单株木生物量中各组分之间的代数关系,通过联立独立模型求解得到单株木相容性模型。同时将样本分为4组,利用5个相对误差指标(即参数变动系数C,总相对误差Rs,平均相对误差E,平均相对误差绝对值Re,预估精度P)来综合评价模型。结果表明,建立的长白落叶松单株木相容性生物量模型结构简单、参数稳定、预估精度较高,可以较全面、客观地反映各组分之间生物量的分配关系,实现模型估计值之间的相容性,提高了林木生物量估测精度。
|
| 关 键 词： | 长白落叶松 生物量模型 相容性 联合估计 模型检验 |
Establishment of Compatible Biomass Model for Larix olgensis in Xiaoxing' an Mountains |
| |
| Fu Yao,Ma Wei,Wang Xinjie,Sun Yujun.Establishment of Compatible Biomass Model for Larix olgensis in Xiaoxing' an Mountains[J].Journal of Northeast Forestry University,2011,39(7):42-45. |
| |
| Authors: | Fu Yao Ma Wei Wang Xinjie Sun Yujun |
| |
| Institution: | (Key Laboratory for Silviculture and Conservation(Beijing Forestry University),Ministry of Education,Beijing 100083,P.R.China) |
| |
| Abstract: | A study was conducted to establish compatible biomass estimation models for different components of Larix olgensis,aiming to find a suitable biomass estimation model for L.olgensis,and improve the estimation precision of forest biomass.Tree characteristics,including diameter at breast height and tree height,etc,were gradually screened out for the establishment of biomass evaluation models for total tree,aboveground part,stem,root,crown,branch and foliage of L.olgensis,based on the investigation of sample plots and sample tree biomass.According to the compatibility theory of forest biomass,the compatible biomass models were deduced by simultaneous independent models in terms of the algebraic relation between the components of single tree biomass using stem biomass as the controlled variable.Meanwhile,all samples of the mean trees were divided into four groups,and five relative error indexes were used to analyze and evaluate the models for the four different groups.Results show that the compatible biomass model for a single tree of L.olgensis has a simple structure,stable parameters and high prediction accuracy.It is obvious that the model could completely and objectively reflect the distribution relationship of biomasses among various components. |
| |
| Keywords: | Larix olgensis Biomass models Compatibility Joint estimation Model checking |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
