兼容性立木生物量非线性模型研究

• 作 者: 曾伟生 骆期邦 贺东北
• 机 构: 国家林业局中南调查规划设计院!长沙410014,国家林业局中南调查规划设计院!长沙410014,国家林业局中南调查规划设计院!长沙410014
• 出 处: 生态学杂志
• 发表日期: 1999年04期
• 关键词: 生物量 立木 森林资源监测 非线性模型 联合估计 森林资源清查 样木 拟合精度 径阶 兼容问题

Biomass is one of the important items for today ,s regional forest resources inventory and monitoring. However, the current biomass models have two big problems,that is,the biomass estimator is not compatible with the volume estimator,and total biomass estimator is not compatible with the biomass estimators of stem,branch, beaf etc. In present paper,a new compatible tree biomass model system for Chinese fir was presented based on volume being selected as explanatory variable and two or more simultaneous models being estimated dependently. These new models could solve the two problems above and have higher precision and better applicability than the currently-used biomass models.

Biomass is one of the important items for today, yet regional biomass resource inventory and monitoring. However, the current biomass models have two big problems, that is, the biomass estimator is not compatible with the volume estimator, and total biomass estimator is not compatible with the biomass estimators of stem, branch, beaf etc. In present paper, a new compatible tree biomass model system for Chinese fir was presented based on volume being selected as explanatory variable and two or more simultaneous models being estimated dependently. These new models could solve the two problems above and have higher precision and better applicability than the currently-used biomass models.