Plant species beta diversity estimation method and system

A diversity and species technology, applied in computing, computer components, color/spectral characteristic measurement, etc., can solve the problems of unresearched beta diversity, strong location dependence, and beta diversity cannot be estimated by remote sensing, etc. Efficient information processing and cost saving effect

Pending Publication Date: 2020-08-07
MINZU UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few case studies on hyperspectral estimation of beta diversity, and remote sensing estimation models of plant species beta diversity are missing. Differences in species composition, alpha diversity remote sensing models, etc. can no longer meet the requirements, while beta diversity cannot be estimated by remote sensing due to technical bottlenecks
Furthermore, the existing remote sensing estimation models for other plant species diversity indices have problems such as strong location dependence and unstable model accuracy.

Method used

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  • Plant species beta diversity estimation method and system
  • Plant species beta diversity estimation method and system
  • Plant species beta diversity estimation method and system

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Embodiment 1

[0037] In order to accurately monitor and evaluate the beta diversity of plants in a region, community or ecosystem quickly, in a large area, without damage and without contact, the method for estimating the beta diversity of plant community species based on the Euclidean distance index of remote sensing data provided in this embodiment includes The following steps:

[0038] S1. Obtain airborne, spaceborne or low-altitude, near-ground remote sensing data of a certain area to be measured, and perform radiation correction, geometric correction and / or terrain correction on the acquired remote sensing data, and extract vegetation at a wavelength of 400-1000nm The reflectance is used as spectral data, where radiation correction, geometry correction and / or terrain correction are conventional image processing methods for remote sensing processing, and the specific processing will not be repeated here.

[0039] S2. Correct and inspect the acquired spectral data, eliminate outliers and...

Embodiment 2

[0050] This embodiment provides a system for estimating beta diversity of plant species based on spectral Euclidean distance, the system comprising:

[0051] The remote sensing data acquisition module is used to acquire remote sensing data, and after performing radiation correction, geometric correction and / or terrain correction on the remote sensing data, extract the vegetation reflectance at 400-1000 nm as spectral data;

[0052] The spectral data correction module is used to correct and inspect the spectral data to ensure that there is no data error, correct and inspect the spectral data according to the type of ground features and extract the vegetation data, so as to ensure that the obtained remote sensing data is vegetation spectral data;

[0053] A smoothing processing module, used for smoothing the acquired vegetation spectral data;

[0054] A diversity assessment module for evaluating beta diversity of plant species based on the Euclidean distance index of spectra bet...

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Abstract

The invention relates to a plant species beta diversity estimation method and system, and the method comprises the following steps: S1, correcting the obtained remote sensing data of a to-be-detectedregion, and extracting the vegetation reflectivity in a set waveband range as to-be-processed spectral data; s2, checking the verified and error-free spectral data according to the ground object type,and ensuring that the obtained spectral data is vegetation spectral data; s3, carrying out smoothing processing on the acquired vegetation spectrum data; and S4, calculating the vegetation spectrum data subjected to smoothing processing to obtain an Euclidean distance index of the spectrum between the quadrat for estimating the beta diversity of the plant species. According to the method, the beta diversity of the plant species can be rapidly estimated according to the spectral heterogeneity data, and the method can be widely applied to rapid evaluation of the beta diversity of the plant species in grassland, grassland, shrubs, farmlands, nursery lands and the like.

Description

technical field [0001] The invention relates to a method and system for estimating beta diversity of plant species based on spectral Euclidean distance, and relates to the technical field of biodiversity monitoring. Background technique [0002] Biodiversity is of great significance to maintaining the stability of the earth's ecosystem and maintaining ecosystem service functions. Global biodiversity is declining due to global climate change, land use change, increased human disturbance, and biological invasions, and further declines are predicted in the future. Rapid assessment of biodiversity is essential for biodiversity monitoring and conservation. In recent years, spectral data has been applied to the rapid assessment of plant species diversity in two ways: one is to directly assess the relationship between spectral data characteristic parameters and species diversity, and the other is to use environmental variables derived from spectral data, field Species diversity i...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/36G06K9/62G01N21/25
CPCG01N21/25G06V20/188G06V10/20G06V10/247G06F18/22
Inventor 彭羽
Owner MINZU UNIVERSITY OF CHINA
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