A biomass model prediction method and system based on tree metabolic rate theory

A model prediction and biomass technology, applied in the field of forest resources survey and monitoring, can solve the problems of low universality of the model, not satisfying the theory of growth metabolic rate, etc., and achieve the effect of improving universality

Active Publication Date: 2022-08-09
HEBEI AGRICULTURAL UNIV.
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the current biomass model built with DBH as the main independent variable does not satisfy the growth metabolic rate theory and the model has low universality, and provides a biomass model prediction method based on the tree metabolic rate theory , including the following steps:

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  • A biomass model prediction method and system based on tree metabolic rate theory
  • A biomass model prediction method and system based on tree metabolic rate theory
  • A biomass model prediction method and system based on tree metabolic rate theory

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Embodiment 1

[0077] Example 1: A method of improving the theoretical model of biomass metabolic rates in this implementation method, including the following steps:

[0078] Step 1. Set up standards and conduct standard investigations in the forest division. Select 1 to 3 superior wood or average wooden trunk analysis within the standard land, and conduct biomass surveys to obtain basic forest submissions survey factor data, analyze wood, analyze wood Data and biomass data;

[0079] Step 2: Use the commonly used linear, non -linear, and variable indexes such as different forms of cutting equation to build a dynamic cutting equation based on the diameter of fixed relatively tree high series to accurately predict the diameter of different positions of the trunk;

[0080] d = f d (DBH, H, H)+ε d

[0081] Among them: DBH is the chest diameter / cm, H is the height / m, H is a height / m, and D is the diameter / cm in the height of the trunk / CM, f. d Linear or non -linear cutting equation function, ε d For...

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Abstract

The invention discloses a biomass model prediction method and system based on the tree metabolic rate theory, so as to improve the prediction accuracy and universality of the model. Diameter of different parts; Step 2: Establish a biomass prediction model including diameters at different heights of the trunk, and determine the relative tree height suitable for satisfying the theoretical biomass model of metabolic rate; Step 3: Establish the compatibility between the shaving equation and the relative tree height of the trunk Step 4: Based on the diameter at the relative height of the trunk, establish a theoretical model of biomass metabolism rate, so as to improve the universality of the theoretical model of biomass metabolism rate. The method provided by the invention provides a new idea and a new method for improving the universality of the theoretical model of biomass metabolism rate.

Description

Technical field [0001] The present invention belongs to the field of forest resource survey and monitoring technology, which involves a biomass model prediction method and system based on tree metabolic rate theory Background technique [0002] In response to the era of global climate change and accurate improvement of forest operation quality, building a theoretical model with higher universal biomass metabolic rate is of great significance in the estimation, monitoring and evaluation of forest biological and carbon reserves. At present, the international diameter is mainly used as an independent variable to build a biomass prediction model. In order to solve the problem of predictive accuracy and additional biomass model prediction accuracy and addition, it has studied in the field of model structure, error structure and parameter estimation method. However, the biomass model mainly constructed based on the chest diameter is not completely in line with the theory of tree growth...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06F30/20G06Q50/26
CPCG06Q10/04G06F30/20G06Q50/26Y02A90/10
Inventor 王冬至李永宁张志东贾彦龙王方
Owner HEBEI AGRICULTURAL UNIV.
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