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Above-ground biomass estimation and scale conversion for mean regional spectral units

A technology of scale conversion and biomass, which is applied in computing, computer components, character and pattern recognition, etc., can solve the problems of insufficient scientific estimation of biomass, and achieve the effect of convenient application

Active Publication Date: 2018-12-21
WUHAN UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method that can realize biomass estimation oriented to homogeneous regional spectral units and rapid detection at different scales, aiming at the defects that the biomass estimation in the prior art is not scientific enough and the estimation results are affected by many factors. conversion method

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  • Above-ground biomass estimation and scale conversion for mean regional spectral units
  • Above-ground biomass estimation and scale conversion for mean regional spectral units
  • Above-ground biomass estimation and scale conversion for mean regional spectral units

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[0046]In order to make the object, technical solution and advantages of 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.

[0047] The invention collects multi-source data, extracts and screens the features that directly or indirectly characterize the biomass, constructs homogeneous regional spectral units at different scales based on the multi-scale segmentation algorithm of bottom-up region merging, and constructs them through the random forest regression algorithm The biomass estimation model oriented to the average regional spectral unit, and then invert the biomass at each scale, and finally realize the biomass estimation oriented to the homogeneous regional spectral unit and the rapid conversion at each scale. The ...

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Abstract

The invention discloses an aboveground biomass estimation and scale conversion method oriented to a mean regional spectral unit, which mainly comprises the following steps: expression of remote sensing geoscience cognitive knowledge; Feature mining and screening; Homogeneous regional spectral unit segmentation; Biomass estimates at various scales. The invention can solve the problem that the current multi-scale biomass estimation mostly depends on the multi-resolution remote sensing image and the sampling of the field sample points under the multi-scale, and the introduction of the multi-source data makes up for the limitation of using only the optical data, and improves the operability of the fast estimation and conversion of the biomass under the different scales.

Description

technical field [0001] The invention relates to the field of monitoring and evaluation of land resources and ecological environment, in particular to a method for estimating aboveground biomass and converting scales oriented to mean regional spectral units. Background technique [0002] Above-ground biomass (hereafter referred to as biomass) refers to the weight of cut plants (aboveground) on the ground within a unit quadrat area at a specific time, and its essence is the amount of organic matter accumulated by green plants in photosynthesis per unit area . Vegetation is the basis of organic matter storage, material circulation, and energy flow. Biomass is a direct reflection of the productivity and growth of vegetation. It plays a very important role in the ecosystem. Therefore, vegetation biomass is also regarded as a measure of the regional ecosystem. important indicators. [0003] The commonly used biomass estimation methods are mainly divided into field measurement me...

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Application Information

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IPC IPC(8): G06K9/00G06K9/62
CPCG06V20/194G06V20/13G06V20/188G06F18/24323
Inventor 王静杜英坤金志丰
Owner WUHAN UNIV
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