Picea koraiensis carbon content quality evaluation method based on extension evaluation method

Abstract

The invention relates to an extension evaluation method, in particular to the field of carbon content quality evaluation methods for picea koraiensis based on the extension evaluation method, and discloses a carbon content quality evaluation method for picea koraiensis based on the extension evaluation method. The invention discloses an extension evaluation method-based spruce carbon content quality evaluation method. The method comprises the following steps of S1, constructing a spruce carbon content quality extension evaluation model according to the extension evaluation method; S2, establishing a quality evaluation standard of the carbon content of the picea koraiensis in the small khingan Mountain; S3, determining the objective weight of each organ of the picea koraiensis through a rough set and knowledge granularity weight determination method; S4, determining the carbon content quality grade of the picea koraiensis in each sample plot; and S5, determining the tending intermediatecutting strength most suitable for improving the carbon content quality of the picea koraiensis in the small Khingan Mountain. According to the method, an extension evaluation method is introduced into evaluation of the carbon content quality of the picea koraiensis under different tending intermediate cutting intensities, and the method has reference significance for improving the estimation precision of the carbon reserves of the forest ecosystem in the small khingan region.

Description

technical field [0001] The invention relates to an extension evaluation method, in particular to the field of quality evaluation methods for the carbon content of red bark spruce based on the extension evaluation method. Background technique [0002] Forest tending and thinning can play a role in regulating stand density and optimizing forest environment. In recent years, with different guiding significance as the research purpose, many scholars and scientific research institutions have carried out research on forest tending and thinning. They respectively explored the effects of tending and thinning intensity on the hydrological and ecological functions of natural larch secondary forests. The growth and structural changes of Chinese fir middle-aged forests were studied, and the results showed that moderate tending and thinning operations have a good promotion effect on the hydro-ecological functions of larch secondary forests, and can effectively promote the growth of stand...

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Problems solved by technology

[0004] Picea redskin is the dominant tree species of natural coniferous and broad-leaved mixed forest in the Xiaoxing’anling area, and it is an important component of spruce forest in the Northeast Valley of China, and it also occupies an important position in the world’s spruce forest. Intensity plays a decisive role. The evaluation methods and methods for the carbon content and quality of red spruce in the existing technology are poor in accuracy. However, the actual measurement of the carbon content of red spruce can accurately grasp the carbon content of spruce in a specific geographical environment. The carbon sequestration of fir can lay a foundation for the research on the carbon sink function of the forest ecosystem, and it has reference significance for improving the estimation accuracy of the carbon storage of the forest ecosystem in the Xiaoxing'an Mountains region.

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