Automatic measuring device for acquiring vegetation canopy structure parameters
A technology for automatic measurement of structural parameters, applied in the fields of agriculture and ecology, can solve problems that restrict continuous observation of long-term sequences, and achieve the effects of reducing experimental costs, reducing complexity, and improving ease of use
Inactive Publication Date: 2014-10-08
BEIJING NORMAL UNIVERSITY
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Problems solved by technology
The method of obtaining vegetation structure parameters by manual sampling fundamentally restricts the difficulty of continuous observation of long-term sequences on large spatial scales by such instruments.
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[0062] A set of equipment of the present invention has been deployed at the test site of the Biological Park of Beijing Normal University, and the equipment setting information and processing information are shown in the table. According to the calculation results, the data receiving situation of the present invention is relatively stable, the data processing automation degree is high, the calculation results are reliable, and the average absolute error is only 0.08, which can be applied to the automatic measurement of vegetation structure parameters in the field environment.
[0063]
[0064]
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An automatic measuring device for acquiring vegetation canopy structure parameters is composed of three parts, namely, a low-cost digital imaging subsystem, a data aggregation subsystem and a data receiving and receiving server subsystem. The low-cost digital imaging subsystem is connected in a communication mode with the data aggregation subsystem through a ZigBee wireless network. The data aggregation subsystem is connected in a communication mode with the data receiving and receiving server subsystem through an Internet network. According to the invention, an automatic structure parameter measuring system is implemented by combining a traditional crop canopy structure parameter measuring principle and a data acquisition and data transmission technology based on a wireless network. The automatic measuring system enables continuous automatic measurement of leaf area index and canopy mean leaf angle of long-time-series and large-space vegetations to be realized, and has wide application prospects in the technical field of agriculture and ecology.
Description
technical field [0001] The invention relates to an automatic measurement device for obtaining vegetation canopy structure parameters, which is a wireless sensor network device for obtaining vegetation structure parameters based on canopy shadow imaging method, and is related to the data collection and transmission of vegetation canopy structure parameters, belonging to Agricultural and ecological technical fields. technical background [0002] Land surface vegetation obtains light energy by intercepting solar radiation for photosynthesis, while vegetation canopy structural parameters, such as leaf area index (LAI) and average leaf inclination (θ L ) is an important factor affecting the redistribution of solar radiation within the canopy. Therefore, obtaining vegetation structure parameter information is an important way to study the growth and development status of vegetation and its accumulated biomass. [0003] The acquisition methods of canopy structure parameters inclu...
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Login to View More IPC IPC(8): G01B11/28G01B11/26G08C17/02
Inventor 屈永华付立哲焦思红
Owner BEIJING NORMAL UNIVERSITY
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