用于估计树叶面积和树叶质量的准管道 (qPipe) 模型的度,应用于植物功能类型
Akihiro Sumida1, Yoshiyuki Inagaki2, Takuya Kajimoto3
1Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Shimogamohangi, Sakyo-Ku, Kyoto, 606-8522, Japan. asumida@kpu.ac.jp.
Scientific reports
|June 19, 2023
概括
准管道 (qPipe) 模型使用地面测量来估计树叶数量,这对于树叶面积有效,但对于不同植物功能类型的树叶质量不那么有效. 这种方法为生态研究提供了传统登树木的可扩展替代方案.
科学领域:
- 森林生态 森林生态
- 一个全度测量法.
- 植物生理学 植物生理学
背景情况:
- 管道模型将树叶数量与树冠底部的茎面积 (ACB) 相关联,这对于碳固定研究至关重要.
- 传统的管道模型全度学需要爬树,这限制了它在大规模生态研究中的应用.
- 准管道 (qPipe) 模型通过从可测量的树维度估计ACB (ACB_Est) 来提供基于地面的替代方案.
研究的目的:
- 建立和比较不同工厂功能类型 (PFTs) 的管道和qPipe模型全度.
- 评估qPipe模型用于估计立式尺度叶数量的适用性.
- 为了研究叶面积 (LA) 和叶质量 (LM) 与树木尺寸在PFT之间之间的关系.
主要方法:
- 从热带到北极森林的159个物种中收集了962棵树的数据.
- 开发了四种PFT的管道和qPipe模型共量学:常青针叶,叶针叶,常青宽叶和叶宽叶.
- 在日志-日志平面上分析了全度关系,以比较PFT之间的斜率和截面,无论是叶面积还是叶质量.
主要成果:
- 每棵树叶面积 (LA) 的全度线在管道和qPipe模型中的四个PFT几乎相同,斜率约为1.
- 在两种模型中的四个PFT之间分离的每棵树叶质量 (LM) 的全度线,斜率大于1.
- 管道模型的比例假设在LA中成立,但在不同PFT中对LM不成立.
结论:
- qPipe模型提供了一种可扩展的方法来估计树叶面积,在各种PFT中保持良好对齐.
- 在PFT中叶子质量测量中的显著差异表明LM估计的简单管道模型的局限性.
- 需要进一步检查qPipe模型的适用性,以估计站立水平的叶子数量.
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