摘要
以景谷县文朗示范林场不同树龄、不同立地和不同密度的思茅松天然林作为研究对象,设置20块标准地,实测标准木120株。通过多元相关分析表明:地上部分总生物量、树干、木材、树皮、树冠、树枝、树叶生物量与D、H和V的相关性密切,同时地上部分总生物量、树冠、树枝、树叶生物量还与CW、L有较高的相关性。利用非线性加权最小二乘法对不同模型分别进行拟合选型,确定了思茅松单木各维量的最优估测模型。经各项指标检验,所确定的生物量模型均具有较好的拟合精度和预估水平,在生产实践中可用其很好的对思茅松单木生物量及林分生物量进行估计,为思茅松的合理经营与开发提供理论依据。
In this paper, taking natural Pinus kesiya var. langbianensis stands with different ages, forest conditions and densities in Wenlang demonstration forestry of Jinggu country as studying objective, and surveyed 120 sample trees in 20 sample plots. The multi - correlation analysis indicated that the biomass of overground total, trunk, timber, bark, crown, branch, leaf had significant relativity with tree DBH, height and volume. At the same time, the biomass of overground total, crown, branch, leaf had large relativity with crown width and crown length. By application of nonlinear weighted least square fit different models, the best biomass models of each dimension were determined. Models examination showed that the fitting precision and estimation is good. In practice, using these models could estimate biomass of single tree or stand and providing theoretical basis of reasonable operation and exploitation for Pinus kesiya var. langbianensis.
出处
《林业科技》
2009年第3期19-23,共5页
Forestry Science & Technology
基金
云南省中青年学术和技术带头人后备人才(2004Py01-17)项目
西南山地生物多样性保育国家林业局重点实验室资助
关键词
思茅松
生物量
估测模型
Pinus kesiya var. langbianensis
Biomass
Estimate model
