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On-line dynamic monitoring method for biomass of large vascular plant in small area range

A dynamic monitoring and biomass technology, applied in photogrammetry/video metrology, measuring devices, surveying and mapping and navigation, etc., can solve problems such as difficulty in ensuring precision and accuracy, and achieve improved accuracy, simple data processing, and reliable highly operable effect

Inactive Publication Date: 2014-06-04
程红光
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Problems solved by technology

However, when this method is used in a small-scale area, due to its data resolution and other reasons, its precision and accuracy are difficult to guarantee

Method used

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  • On-line dynamic monitoring method for biomass of large vascular plant in small area range
  • On-line dynamic monitoring method for biomass of large vascular plant in small area range
  • On-line dynamic monitoring method for biomass of large vascular plant in small area range

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Embodiment Construction

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] like figure 1 A shown method for on-line monitoring of aboveground biomass of large-scale tube-bundled plants suitable for small areas includes the following steps:

[0026] 1. Establish regional characteristic demonstration points in the research area, and use a multi-spectral camera to take large-scale tube plant spectrum photos. The shooting time range is set to three times a day (6:00, 12:00, 18:00) (because of the light conditions) Restricting that there is a certain difference between the NDVI taken at different times of the day, the results obtained by set...

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Abstract

The invention provides an on-line dynamic monitoring method for biomass of a large vascular plant in a small area range. The method comprises the steps as follows: a demonstration site for area characteristics is established, and spectrogram of the large vascular plant is shot; the result obtained by shooting with a multi-spectrum camera is converted through an NDVI (normalized difference vegetation index) conversion formula to obtain the NDVI of the large vascular plant within the range of the demonstration site; the NDVI is converted into NPP (net primary productivity) through a light energy conversion model; the relationship between NDVI and the biomass within the range of the demonstration site is obtained according to the biomass obtained through actual sampling; area TM image data with lower precision are regressed and adjusted respectively to obtain a function equation between the NDVI and the area TM image data; and the area NPP is obtained through the light energy conversion model again. Compared with traditional manual sampling and monitoring, the online dynamic monitoring method provided by the invention improves real-time performance and convenience of biomass monitoring, facilitates scientific management of small-area environment and ecology, improves precision of biomass monitoring in a whole area, is simple and convenient in data processing, and is high in operability.

Description

technical field [0001] The patent of the invention relates to the application field of aboveground biomass monitoring of large-scale tube-bundled plants and dynamic remote sensing monitoring technology, in particular to an online dynamic monitoring method for large-scale tube-bundle plant biomass within a small area. Background technique [0002] The traditional small-scale biomass monitoring technology mainly measures biomass by establishing monitoring points and taking scientific and reasonable spatial sampling on a regular basis, so as to evaluate the changes in regional biomass. Although this monitoring method can effectively monitor the biomass, it is limited by the location of the monitoring point. On the one hand, the monitoring range is small, and on the other hand, the monitoring period is long, so it cannot monitor the biomass in real time. Moreover, for the spatial distribution of regional biomass, the attribute values ​​of sampling points in other regions are pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/00G01N21/84
Inventor 程红光路路蒲晓
Owner 程红光
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