无人机激光扫描、摄影测量和机载激光扫描在小森林属性精确清查中的比较

IF 3 2区 农林科学 Q1 FORESTRY Forestry Pub Date : 2020-02-04 DOI:10.1093/forestry/cpz057
S. Puliti, Jonathan P. Dash, M. Watt, J. Breidenbach, Grant D. Pearse
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引用次数: 42

摘要

本研究解决了使用来自无人机(uav)和机载激光扫描(ALS)数据的多个辅助数据来源来推断小型森林属性(5-300公顷)的关键生物物理参数的问题。我们比较了在基于设计的推理下仅使用地块数据的估计精度与包含地块数据和以下四种辅助数据的基于模型的估计精度:(1)来自无人机摄影测量数据(UAV- sfm)的地形无关变量;(2)利用外部地形数据(UAV- sfmdtm)归一化的无人机摄影测量数据得到的变量;(3) UAV-LS和(4)ALS数据。遥感数据的加入使DB估计的精度提高了1.5-2.2倍。茎高、茎密度、基部面积和茎总积的最佳数据源为:UAV-LS、UAV-SfM、UAV-SfMDTM和UAV-SfMDTM。我们得出结论,即使在密集的野外采样条件下,使用无人机数据也可以提高林分水平估计的精度。
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A comparison of UAV laser scanning, photogrammetry and airborne laser scanning for precision inventory of small-forest properties
This study addresses the use of multiple sources of auxiliary data from unmanned aerial vehicles (UAVs) and airborne laser scanning (ALS) data for inference on key biophysical parameters in small forest properties (5–300 ha). We compared the precision of the estimates using plot data alone under a design-based inference with model-based estimates that include plot data and the following four types of auxiliary data: (1) terrain-independent variables from UAV photogrammetric data (UAV-SfM); (2) variables obtained from UAV photogrammetric data normalized using external terrain data (UAV-SfMDTM); (3) UAV-LS and (4) ALS data. The inclusion of remotely sensed data increased the precision of DB estimates by factors of 1.5–2.2. The optimal data sources for top height, stem density, basal area and total stem volume were: UAV-LS, UAV-SfM, UAV-SfMDTM and UAV-SfMDTM. We conclude that the use of UAV data can increase the precision of stand-level estimates even under intensive field sampling conditions.
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来源期刊
Forestry
Forestry 农林科学-林学
CiteScore
6.70
自引率
7.10%
发文量
47
审稿时长
12-24 weeks
期刊介绍: The journal is inclusive of all subjects, geographical zones and study locations, including trees in urban environments, plantations and natural forests. We welcome papers that consider economic, environmental and social factors and, in particular, studies that take an integrated approach to sustainable management. In considering suitability for publication, attention is given to the originality of contributions and their likely impact on policy and practice, as well as their contribution to the development of knowledge. Special Issues - each year one edition of Forestry will be a Special Issue and will focus on one subject in detail; this will usually be by publication of the proceedings of an international meeting.
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