Ecological Water Estimation Method of Vegetation Canopy Based on Backpack LiDAR

Abstract

The invention discloses a vegetation canopy ecological water estimation method based on a backpack laser radar, which comprises the following steps: 1. Select a forest area, and use a backpack laser radar to obtain vegetation point cloud data; 2. Obtain vegetation point cloud data Perform preprocessing to improve the data quality of the point cloud and separate high-precision point cloud variable information; 3. Identify single trees based on the point cloud; 4. Build a vegetation canopy equivalent water layer moisture content model; 5. Estimation of vegetation Canopy biomass; 6. Based on the vegetation canopy biomass and vegetation canopy equivalent water layer moisture content model, construct the vegetation canopy ecological water storage model, estimate the vegetation canopy ecological water storage in the sample plot, and finally get the vegetation canopy Ecological water inversion results. The present invention directly constructs an inversion model by using the water content data of different organs of the measured vegetation and the backpack laser radar variable, which not only improves the accuracy of vegetation water content inversion, but also simplifies the estimation method of vegetation canopy ecological water.

Description

Technical field [0001] The present invention relates to the technical field of vegetation ecological water, and in particular, the present invention relates to a method of estimating a vegetation crown-layer ecological water based on backpack laser thunder. Background technique [0002] Ecological water (layer) refers to a water body that is closely related to vegetation, specifically, can be divided into three parts. The first part is the water that can be intercepted in different forms of vegetation layer (foliar, root, humic layer) in different forms of vegetation; the second part is the soil package of the vegetation category-loose pores Unsaturated water (some also known as soil water) can be rested; the third part is a variety of forms of biological water in the vegetation body itself. Vegetation crown ecological water refers to the various forms of biological water in the crown part of the vegetation, including leaf, branches, and trunk partial vegetation. [0003] At pres...

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Problems solved by technology

[0005] In order to solve the problem of low evaluation of vegetation canopy ecological water existing in existing methods, the present invention provides a method for estimating vegetation canopy ecological water based on backpack laser radar

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