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释放热带森林的复杂性:二级森林中的树木组合如何促进生物多样性保护
Maïri Souza Oliveira1,2, Maxime Lenormand1, Sandra Luque1
1INRAE, National Research Institute on Agriculture, Food & the Environment, TETIS Research Unit, Maison de la Télédétection Montpellier France.
Ecology and evolution
|November 12, 2025
概括
本研究介绍了一种国家方法,用于绘制热带森林生态系统的地图,使用占主导地位的树种作为指标. 它评估了对保护至关重要的二级森林,并强调了数据收集方面的挑战.
科学领域:
- 生态生态学 生态生态学
- 森林科学 森林科学 森林科学
- 保护生物学 保护生物学
背景情况:
- 二级森林对于热带生物多样性和保护目标至关重要 (COP15).
- 识别和描述这些森林生态系统对于有效管理至关重要.
- 主导的树种被提出为界定森林生态系统的可靠指标.
研究的目的:
- 开发一种可复制的国家方法来识别和描述森林生态系统,重点是二级森林.
- 为了测试主导树种表明森林生态系统类型和生物多样性的假设.
- 评估二级森林在已识别的生态系统中的分布和作用.
主要方法:
- 基于主导物种丰度 (重要性变量指数) 的国家森林库存数据的层次分类.
- 使用NDVI,Sentinel-2光谱数据和环境变量进行面向对象的随机森林建模.
- 使用物种组合,相互作用和生态因素对已识别的集群进行表征.
主要成果:
- 成功建模了哥斯达黎加的7个主要森林生态系统集群,从10个已识别的现场集群中.
- 该模型获得了0.73的F1得分和0.58的宏观F1得分.
- 生态系统的特点是独特的主导物种,地形,气候和植被动态,与当地分类保持一致.
结论:
- 主导的树种有效地划分了森林生态系统和生物多样性的复杂性.
- 该方法提供了对二级森林分布和生态系统脆弱性的洞察.
- 现场数据采集仍然是国家级森林生态系统评估的一个重大挑战.
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