Method for measuring space structure parameters through scanning image of forest litter

A technology for scanning images and spatial structures, applied in the field of forest ecology, can solve problems such as research methods or technical approaches for the spatial structure of forest litter that have not yet been discovered

Inactive Publication Date: 2014-03-12
DALIAN UNIV
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Problems solved by technology

At present, there are very few studies on the spatial structure of forest litter, and no feasible research method or technical approach for the spatial structure of forest litter has been found.

Method used

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  • Method for measuring space structure parameters through scanning image of forest litter
  • Method for measuring space structure parameters through scanning image of forest litter
  • Method for measuring space structure parameters through scanning image of forest litter

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Embodiment Construction

[0032] In order to gain an in-depth understanding of the method of measuring spatial structure parameters using forest litter scan images, combined with Figure 1 to Figure 4 Described as follows, the concrete implementation steps of this method are as follows:

[0033] (1) Acquire litter litter scanning images:

[0034] Select the litter sample in the field, fill the sample with polyethylacrylate, embed the sample with paraffin after drying, cut it into 1cm thick squares with a hacksaw along the longitudinal section after cooling, and flatten it with a sharp blade One side of the block; immerse the smooth side of the block in xylene at a depth of 1-2mm to melt off the 1-2mm thick paraffin of the sample block; place the block with the side of the block that has melted the paraffin down on the scanner to obtain a JPG with a resolution of 1200dpi format scanned images.

[0035] (2) Scanned image preprocessing:

[0036] The scanned image was rotated with Photoshop CS5 soft...

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Abstract

The invention discloses a method for measuring space structure parameters through a scanning image of a forest litter and belongs to the technical field of forest ecology. The method comprises the following steps: performing paraffin embedding, slicing and scanning to obtain a forest litter longitudinal section image; calculating the width and height sizes of the image according to the dots per inch (DPI) resolution of the scanning image; constructing a measurement coordinate system in millimeters in Arcgis9.3 by taking four corners of the image as coordinate points, and eliminating invalid parts of image data by determining a valid image data area; extracting litter and pore information by using Erdas Imagine9.2 texture analysis and ISODATA classification tools, and converting the litter and porosity information into a vector graph layer; constructing a layered grid by using an Arcgis9.3 Create Fishnet tool to partition a pore graph layer, performing layered statistics to obtain porosity, and calculating the distribution direction of each layer of porosity graph spots by using a Polar Plots and Circular Statistics module. A technical support is provided for further research on decomposition of the litter, matter circulation, soil microorganisms, water conservation, preservation of water and soil characteristics, seed germination and the like.

Description

technical field [0001] The invention belongs to the technical field of forest ecology, and in particular relates to a method for calculating porosity and pore directionality parameters by using scanned images of forest litter. technical background [0002] Forest litter is an important part of the forest ecosystem. It acts as a "link" connecting plants and soil in the nutrient cycle of the forest ecosystem, and is extremely important for forest regeneration and growth. As early as 1876, German scholars expounded the importance of litter in the nutrient cycle, and then many scholars conducted a large number of studies, reports and summaries on litter worldwide. The study of litter in our country started in the early 1960s, and it has developed greatly in the 1980s, mainly focusing on two aspects, one is the study of litter quantity, and the other is the study of the decomposition process of litter. On the basis of a large number of studies on the quantity and composition of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 张自川李根柱王贺新
Owner DALIAN UNIV
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