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Method for determining reasonable stand density based on forest-water relationship

A technology of stand density and determination method, applied in data processing applications, instruments, complex mathematical operations, etc., can solve problems such as increased water consumption and inability to meet the growth needs of forest trees, and achieve the effect of improving forest quality

Pending Publication Date: 2022-01-11
河北省林业和草原科学研究院
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Problems solved by technology

The main reason is that with the growth of trees, the water consumption continues to increase, and the amount of water resources that can be satisfied by young forests can no longer meet the needs of tree growth after forest growth.

Method used

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  • Method for determining reasonable stand density based on forest-water relationship
  • Method for determining reasonable stand density based on forest-water relationship
  • Method for determining reasonable stand density based on forest-water relationship

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings. The protection scope of the present invention is not limited to the embodiments, and any changes made by those skilled in the art within the scope defined in the claims also belong to the protection scope of the present invention.

[0038] The present invention is selected to be applied in the Xiaowutai Mountain National Nature Reserve in Hebei Province, and the stand type is Pinus tabulaeformis artificial forest. The test plot was selected on a relatively uniform typical slope, with a size of 40×50m, an altitude of 1336m, a slope direction west to north, a slope of 14°, and a middle slope position. Stand density 915 plants / hm 2 , the forest age is 40 years, the canopy density is 78%, and the surface coverage is 76%. The average DBH of Pinus tabulaeformis is 17.15±5.58cm, the average tree height is 9.26±2.42m, and the average crown width is 4.52m×...

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Abstract

The invention relates to a method for determining a reasonable stand density based on a forest-water relationship, which automatically determines the stand density by using a computer program according to the rainfall resource environment capacity under the condition of rainfall resource supply. The determination process comprises the steps of (1) determining technical parameters, (2) establishing a reasonable stand density model of the forest-water relationship, and (3) determining the reasonable stand density. The technical parameters comprise (1) rainfall resource environment capacity V, (2) under-forest evaporation dissipation water consumption v1 and (3) single-plant water consumption v2 of arbor species with different diameters at breast height. According to the method, starting from the most important restrictive factor water resource of northern forest vegetation, the regional rainfall resource environment capacity and the transpiration water consumption dynamic change are comprehensively considered, the problem of reasonable operation density of different tree species in the whole life cycle under the regional rainfall resource environment capacity is effectively solved, and the method plays an important role in improving forest quality and forest ecosystem stability.

Description

technical field [0001] The invention belongs to the technical field of tree management and production, and relates to a method for determining a reasonable stand density based on forest-water relationship. Background technique [0002] Stand density is the basis for the formation of a reasonable spatial structure in a forest, and it is also the decisive factor for the growth and development space of individual trees. Determining the reasonable density of stands in different growth stages is one of the core issues in forestry. Whether the stand density is reasonable or not directly affects the stand health, quality, stability, production structure and productivity. Properly apply the theory and technology of reasonable density, through the regulation of forest production structure, give full play to the potential of forest to make full use of existing environmental resources, improve productivity and resistance to external disturbance, and increase the stability of forest eco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02G06F17/18
CPCG06Q10/0639G06Q50/02G06F17/18
Inventor 任启文张树梓李洁黄磊张凤娇李联地
Owner 河北省林业和草原科学研究院
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