Assessment of the Potential for Determining the Height and Projective Cover of Protective Forest Stands Using ICESat-2 Data

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Cosmic Research Pub Date : 2024-02-27 DOI:10.1134/s0010952523700715

S. S. Shinkarenko, S. A. Bartalev, M. A. Bogodukhov, V. O. Zharko

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Abstract

This report presents an analysis of the potential of using the information product ATL08 derived from the ATLAS/ICESat-2 (Advanced Topographic Laser Altimeter System/Ice, Cloud, and land Elevation Satellite) satellite lidar to determine the height of protective forest stands. Height measurements, corresponding to vegetation based on lidar data from 2019 to 2022, were compared with the results of aerial photography processing conducted in Volgograd oblast in 2022. A significant strong correlation was found between the mean and maximum canopy heights determined from aerial survey and laser scanning data for 20 × 14-m segments with a woody and shrub vegetation cover exceeding 50%. For the mean canopy height, the root mean square error (RMSE) is ±0.7 m and coefficient of determination R² = 0.85; for the maximum canopy height, RMSE = 2.2 m and R² = 0.83. Comparison of projective cover using lidar data, calculated as the ratio of the number of photons above a certain threshold height to the total number of photons in the segment, with aerial photography data showed insufficient accuracy of this approach. The results suggest that ATL08 lidar data holds promise for evaluating the height of protective forest stands, although it may not be suitable for determining projective cover.

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利用 ICESat-2 数据确定防护林高度和投影覆盖面的潜力评估

摘要本报告分析了使用 ATLAS/ICESat-2（高级地形激光测高仪系统/冰、云和陆地高程卫星）卫星激光雷达生成的信息产品 ATL08 确定防护林高度的潜力。基于 2019 年至 2022 年激光雷达数据的植被高度测量结果与 2022 年在伏尔加格勒州进行的航空摄影处理结果进行了比较。根据航拍和激光扫描数据确定的平均树冠高度和最大树冠高度之间存在明显的强相关性，20 × 14 米的林段的木本和灌木植被覆盖率超过 50%。平均冠层高度的均方根误差为 ±0.7 米，判定系数 R2 = 0.85；最大冠层高度的均方根误差为 2.2 米，判定系数 R2 = 0.83。利用激光雷达数据计算的投影覆盖率（计算方法是高于某一阈值高度的光子数与该区段光子总数之比）与航空摄影数据的比较表明，这种方法的准确性不足。结果表明，虽然 ATL08 激光雷达数据可能不适合确定投影覆盖率，但有望用于评估防护林林分的高度。

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来源期刊

Cosmic Research 地学天文-工程：宇航

CiteScore

1.10

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Cosmic Research publishes scientific papers covering all subjects of space science and technology, including the following: ballistics, flight dynamics of the Earth’s artificial satellites and automatic interplanetary stations; problems of transatmospheric descent; design and structure of spacecraft and scientific research instrumentation; life support systems and radiation safety of manned spacecrafts; exploration of the Earth from Space; exploration of near space; exploration of the Sun, planets, secondary planets, and interplanetary medium; exploration of stars, nebulae, interstellar medium, galaxies, and quasars from spacecraft; and various astrophysical problems related to space exploration. A chronicle of scientific events and other notices concerning the main topics of the journal are also presented.