1. Forest resources survey: Remote sensing technology can monitor a large forest area in real time, and make a detailed evaluation of forest growth state, canopy structure, terrain elevation difference, feature types, total forest area and forest growth rate. , accurately predict the growth trend of forest area and conduct an all-round investigation of forest resources.
2. Forest pest monitoring: Remote sensing technology can assess the health status and damage degree of trees by detecting the growth state, spatial distribution and time change of forests. Through the analysis of remote sensing images, forest pests and diseases can be found earlier, and the spatial scope of pests and diseases can be investigated, so that prevention and control can be carried out faster and more accurately.
3. Dynamic monitoring of forest fires: Remote sensing technology can use thermal infrared remote sensing technology to detect the temperature of forest areas and the location of infected fire sources, thus dynamically monitoring and early warning forest fires. Grasping the dynamics of forest fires in real time can effectively reduce the harm of forest fires and protect the ecology and safety of forest areas.
4. Forest carbon storage assessment: Forest ecosystem plays an important role in the earth ecosystem, and forest carbon storage assessment is one of the important indicators of forest assessment. Remote sensing technology can accurately calculate and predict forest carbon storage, predict and evaluate forest carbon cycle and dynamic changes, and provide data support for making forest carbon emission reduction plans and protecting forest resources.
Remote sensing technology is widely used in forestry, which has great advantages in forest resources investigation, forest pest monitoring, forest fire dynamic monitoring, forest carbon storage evaluation and so on. It helps us to better understand and manage the forest ecosystem, improve the efficiency of forest resources protection and utilization, and has positive significance for the sustainable development of forestry.
The origin of remote sensing technology
The origin of remote sensing technology can be traced back to the United States in the late 1930s. At that time, with the rapid development of aircraft, cameras and other technologies, the US Geological Survey took the lead in the research and application of aerial photography. From 65438 to 0943, the United States used a large number of aerial cameras to monitor Japanese targets in World War II, which laid the foundation for the development of remote sensing technology in the future.
With the rapid progress of science and technology, remote sensing technology in the United States gradually emerged in the early 1960s. At that time, the National Resources Council of the United States conducted a comprehensive survey of land use, forestry, hydrology, wildlife and other resources throughout the United States.
In 1960s, the United States used remote sensing technology to study agriculture and natural resources on a large scale. Since then, with the development of satellite technology and the great progress of remote sensing image processing due to algorithms and software, remote sensing technology has been widely used in many fields, including environmental monitoring, meteorological prediction, urban planning and national defense security.