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Growth and management interactive visualization simulation method for forest stand

A technology of stand growth and simulation method, applied in the fields of stand growth visualization simulation and forestry management visualization simulation, can solve the problem of lack of effective interaction between stand growth and stand management, inability to adapt to different stand growth characteristics, visual simulation low level problem

Inactive Publication Date: 2014-03-26
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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AI Technical Summary

Problems solved by technology

[0002] The existing stand growth and stand management simulations all use a single growth model as the simulation object, which cannot meet the needs of different stand growth characteristics. At the same time, there is a lack of effective interaction between stand growth and stand management, and the degree of visual simulation is low. However, there is a lack of a visual simulation method that can not only meet the growth characteristics of different stands, but also directly reflect the interaction between stand growth and management, so as to improve the efficiency and level of stand management.

Method used

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  • Growth and management interactive visualization simulation method for forest stand
  • Growth and management interactive visualization simulation method for forest stand
  • Growth and management interactive visualization simulation method for forest stand

Examples

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Embodiment 1

[0103] 1) Test data

[0104] The selected simulated test object is the pure Chinese fir artificial forest of the same age, which is a general timber forest, with an east-west aspect, a slope of 35.2, an altitude of 324m, a forest age of 11 years, and a total of 309 trees. For each tree in the sample plot, measure the tree measurement factors such as diameter at breast height, tree height, crown width, live branch height, and crown height, and use a total station to measure the relative position coordinates of each tree to carry out stand growth and stand management. Interactive visual simulation experiment.

[0105] 2) Modeling of forest stand interactive management visualization model

[0106] After the first thinning, the second thinning was carried out when the forest age was 18 years. During this period, the tree growth was estimated by formula (14), and the tree growth was estimated by formula (21), (25) and (26). Tree height, crown width and volume estimation. The for...

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Abstract

The invention relates to a growth and management interactive visualization simulation method for a forest stand. The growth and management interactive visualization simulation method for the forest stand comprises the steps that firstly, variables needed by a full forest stand growth model, a diameter class growth model, an individual tree growth model and a forest measurement factor estimation model are established; secondly, a user-defined forest stand growth model analyzer is constructed; thirdly, the current situation and the variables of the forest stand after growth changes are automatically stored dynamically, extracted and calculated; fourthly, an individual tree visualization model parameter calculation method based on a user-defined forest stand growth model is constructed, and interactive forest stand growth visualization simulation under the user-defined forest stand growth model is achieved; fifthly, visualization simulation is carried out on the forest stand structures, forest stand two-dimensional states and three-dimensional scenes before and after management of the forest stand by adopting the GDI and drawing technology and the MOGRE technology, and growth and management interactive visualization simulation of the forest stand is achieved.

Description

technical field [0001] The invention belongs to two technical fields of stand growth visualization simulation and forestry management visualization simulation, and specifically relates to a stand growth and management interactive visualization simulation method. Background technique [0002] The existing stand growth and stand management simulations all use a single growth model as the simulation object, which cannot meet the needs of different stand growth characteristics. At the same time, there is a lack of effective interaction between stand growth and stand management, and the degree of visual simulation is low. However, there is a lack of a visual simulation method that can not only satisfy the growth characteristics of different stands, but also directly reflect the interaction between stand growth and management, so as to improve the efficiency and level of stand management. [0003] The present invention synthesizes the variables required by the whole stand growth m...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 张怀清鞠洪波李永亮刘闽蒋娴
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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