Forest fire combustible load capacity estimation method and device

A forest fire and load-carrying technology, applied in computing, special data processing applications, instruments, etc., can solve the problem of difficult forest fire behavior calculations, providing strong support, changes in the load of combustibles, and difficult to measure the load of combustibles. and other problems, to achieve the effect of good prediction stability index and avoid the occurrence of negative prediction values.

Inactive Publication Date: 2015-06-10
中测高科(北京)测绘工程技术有限责任公司
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Problems solved by technology

However, due to the diversity and complexity of forests, coupled with regional differences, the fuel load varies with various related factors.
Therefore, it is difficult to measure the load of combustibles on the surface of forest areas in my country according to the existing measurement method of fuel load, and it is difficult to provide strong support for the calculation of forest fire behavior.

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  • Forest fire combustible load capacity estimation method and device
  • Forest fire combustible load capacity estimation method and device
  • Forest fire combustible load capacity estimation method and device

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Embodiment Construction

[0016] see figure 1 A method for estimating the load capacity of combustibles in forest fires provided by an embodiment of the present invention includes the following steps:

[0017] Step 10, classify the types of combustibles. Among them, different types of combustibles can be divided into three categories: dangerous combustibles, slow-burning combustibles, and difficult-to-combustible combustibles. Dangerous combustibles are twigs, leaves and weeds with a diameter of <0.64cm, slow-burning combustibles are small branches with a diameter of 0.64-2.54cm, and non-combustible combustibles are dead branches with a diameter of 2.54-7.62cm.

[0018] When classifying the type of fuel, it can also be combined with the forest type and forest site conditions to carry out the sample area division of the forest area to be measured. Specifically, the forest area to be measured can be divided according to the tree age, canopy density, DBH, tree height in the forest type, and the altitude...

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Abstract

The invention provides a forest fire combustible load capacity estimation method. The method includes that combustible types are divided; a sample plot with representative forest types and site conditions in forest areas is selected, and different areas are selected in the sample plot according to diagonal directions and load capacities of different combustible types are measured respectively; a calculation model of forest surface combustible load capacities is determined through clustering analysis according to the measured load capacities of the different combustible types and the forest types and the forest site conditions in the areas so that ground surface combustible load capacity in a to-be-measured forest area can be determined. The invention further discloses a forest fire combustible load capacity estimation device which comprises a dividing module, a measuring module and a calculating module. By means of the forest fire combustible load capacity estimation method and device, load capacities of various ground surface combustibles can be comprehensively estimated, and predicted negative values are avoided.

Description

technical field [0001] The invention relates to the technical field of forest disaster prevention, in particular to a method and a device for estimating the load capacity of combustibles in forest fires. Background technique [0002] In forest fires, the load of forest fuels is an important parameter for estimating forest fire behavior indicators. Obtaining the load of forest fuels is of great significance for forest fire risk forecasting, forest fire occurrence forecasting, and forest fire behavior forecasting. [0003] It is very difficult to estimate the load of forest fuels, and the research on quickly obtaining the load of forest surface fuels is an urgent problem to be solved in the field of forest disaster prevention technology. At present, the methods for measuring the load capacity of combustibles include direct estimation, standard mechanical point layout, line section method, photo estimation method, remote sensing image method and so on. However, due to the dive...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 范荣双许德合郑君景新超荆凯旋曹萌
Owner 中测高科(北京)测绘工程技术有限责任公司
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