关于以林业库存为重点的地质学测量方法的评论
Karel Pavelka1, Eva Matoušková1, Karel Pavelka1
1Department of Geomatics, Faculty of Civil Engineering, Czech Technical University in Prague, 166 29 Prague, Czech Republic.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
个人激光扫描 (PLS) 为森林管理中推导森林参数提供了最实用的解决方案,其性能优于空中激光扫描 (ALS) 和地面激光扫描 (TLS). 无人机为估计木材立方度和评估森林健康提供了宝贵的见解.
科学领域:
- 林业科学 林业科学
- 地理学工程 工程地质学
- 遥感应用 遥感应用
背景情况:
- 准确的森林库存和生长参数导出对于可持续森林管理至关重要.
- 现代地质技术为林业数据采集提供了潜在的进步.
研究的目的:
- 为了比较各种用于森林管理的地理技术的可用性,数据集成和经济可行性.
- 确定最有效的方法来导出杉林生态系统中的森林生长参数.
主要方法:
- 陆地激光扫描 (TLS),陆地和无人机近距离摄影仪,个人激光扫描 (PLS) 和空中激光扫描 (ALS) 的比较分析.
- 实地测量和数据处理在五年期间在山森林.
- 评估数据质量,成本效益和森林管理任务的实际适用性.
主要成果:
- 空中激光扫描 (ALS) 对于小区域来说太昂贵,并且缺乏精确参数导出的细节.
- 发现陆地近距离光谱和TLS在标准林业应用中是不切实际的.
- 个人激光扫描 (PLS) 显示出高可用性,可以快速推导参数和计算木材体积.
- 远程驾驶飞机系统 (无人机) 有效地估计了木材数量,并评估了森林健康状况.
结论:
- 个人激光扫描 (PLS) 成为当前森林管理实践中推导森林参数的最合适技术.
- 无人机为估计木材立方度和监测杉林健康提供了可行的解决方案.
- 该研究强调实际应用,指导技术选择,以实现高效的森林管理.
相关概念视频
01:25Methods of Obtaining Topography
82
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
82
01:30Types of Global Positioning System Surveys
77
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
77
01:18Distance Measurements by Taping
64
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
64
01:10Design Example: Measuring Distance Between Two Points with Obstructions
62
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
62
01:30Electronic Distance Measuring Instruments
57
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
57
01:27Introduction to Surveying, Plane Surveying and Geodetic Surveys
129
Surveying is the art and science of mapping the earth's surface. It involves measuring distances, angles in horizontal or vertical directions, and levels to understand the shape and size of land features. Surveying techniques are essential for various tasks, such as identifying the levels of a land area with reference to a specific point, and mapping undulations and water bodies.There are two main types of surveying: plane surveys and geodetic surveys. Plane surveys assume the earth is flat,...
129