方法对比
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| 冠层覆盖度估算× | 森林清单抽样× | |
|---|---|---|
| 领域 | 林学 | 林学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 2000s | 1973 |
| 提出者≠ | Jennings, Brown, Sheil, and colleagues | Loetsch, Zöhrer, and Haller |
| 类型≠ | Measurement and estimation pipeline | Statistical sampling pipeline |
| 开创性文献≠ | Jennings, S. B., Brown, N. D., & Sheil, D. (2000). Assessing Forest Canopies and Understorey Illumination: Methods and Applications. Forest Ecology and Management, 129(1-3), 219–243. link ↗ | Loetsch, F., Zöhrer, F., & Haller, K. E. (1973). Forest Inventory. BLV Verlagsgesellschaft. link ↗ |
| 别名 | Canopy closure measurement, Crown cover estimation, Overstory density assessment | Forest stand sampling, Timber inventory sampling, Plot-based forest survey |
| 相关 | 4 | 4 |
| 摘要≠ | Canopy cover, or canopy closure, is the proportion of ground area covered by tree crowns when viewed from above, typically expressed as a percentage. Formalized by Jennings and colleagues in pioneering work on tropical forest structure, canopy cover estimation employs multiple methods—from field-based ocular assessment to sophisticated remote sensing and terrestrial LiDAR—providing essential data on forest structure, light availability, and habitat characteristics relevant to ecology, silviculture, and climate research. | Forest inventory sampling is a systematic approach to estimate forest characteristics such as timber volume, species composition, and biomass by surveying a representative subset of trees rather than conducting exhaustive censuses. Developed by Loetsch and colleagues in the 1970s, the method applies statistical sampling theory to forest assessment and remains the foundation for sustainable forest management and resource monitoring worldwide. |
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