| 罗 胤,施凯泽,徐婷婷,林国刘,杨 倩,李 维,冷鸿天.云南省云南松林分密度控制图的模型构建研究[J].林业调查规划,2025,50(6):1-9，14 |
| 云南省云南松林分密度控制图的模型构建研究 |
| Construction of Pinus yunnanensis Stand Density Management Diagram Model in Yunnan Province |
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| DOI： |
| 中文关键词: 林分密度控制图 等树高线模型 等直径线模型 等疏密度线 饱和密度线 等初始密度线 云南松 |
| 英文关键词: stand density management diagram contour line model equal diameter line model equal
stand density line saturation density line equal initial density line Pinus yunnanensis |
| 基金项目: |
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| 中文摘要: |
| 在云南省内布设云南松标准样地879 块,采集云南松样地基本信息,对建模样本的异常数据
进行剔除、整理后,构建等树高线模型、等直径线模型。对构建的4个等树高线模型进行对比分析,最终选择模型1为云南松等树高曲线模型,对模型1 的精度和适用性进行分析,建模模型精度均大于95%,且通过F检验,云南松两个编表单元等树高线模型均达到要求,可用于生产实践。对4个等直径线模型进行对比分析,最优为模型5,其次为模型8,再次之为模型6,最差为模型7,对模型5的精度和适用性进行分析,建模模型精度均大于95%,并通过F检验,云南松两个编表单元等直径线模型均达到要求,可用于生产实践。通过等树高线模型推算出等疏密度线、饱和密度线和等初始密度线,最终形成云南松天然林、人工林的林分密度控制图。 |
| 英文摘要: |
| A total of 879 standard sample plots of Pinus yunnanensis were established in Yunnan Province
to collect basic plot information. After gathering the fundamental data and removing some outliers, models
for the contour lines and equal diameter lines were constructed. Four models for the contour lines were evaluated,
with Model 1 being identified as the most suitable. Precision and applicability analyses of Model
1 indicated an accuracy rate exceeding 95%. Additionally, F-tests confirmed that the contour lines
models for the two tabulation units of Pinus yunnanens were compliant with required standards, rendering
them suitable for production practice. Similarly, four models were assessed for the equal diameter lines,
with Model 5 emerging as the most effective, followed by Model 8, 6, and 7, respectively. The precision
and applicability analyses of Model 5 also demonstrated an accuracy rate above 95%. F-tests further verified that the diameter lines models for the two tabulation units of Pinus yunnanensis met the necessary criteria,
making them applicable for practical purposes. From the contour lines models, the equal stand density
lines, saturation density lines, and initial density lines were subsequently derived. The final outcome
was the management diagram of stand density for both natural and plantation Pinus yunnanensis forests. |
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