Horizontal arrangement method of protection forest

Abstract

The invention discloses a horizontal arrangement method of protection forest, belonging to the technical field of forest-science forestation. The horizontal arrangement method comprises the steps of: S1, determining an index of deciding a vegetation form arrangement; S2, normalizing a numerical value of the index so that a value field is in a range of [0,1] or [-1,1]; S3, determining an input layer and an output layer of a BP (Back-Propagation) neutral network model by using the index as an input node and a vegetation form as an output node; S4, determining a network structure of the BP neutral network model; and S5, inputting a normalized numerical value of the index according to the determined network structure, outputting a numerical value of the vegetation form, and determining the horizontal arrangement of the protection forest. With the close-to-nature forestry as the theoretical basis and the BP neutral network model as a tool as well as natural and geological and weather conditions of a forest land as source data, forest sort arrangement of the protection forest is researched, and thus the forest sort of the protection forest accords with the natural and geological and weather conditions, so that the protection effect is achieved.

Description

technical field [0001] The invention relates to the technical field of afforestation in forestry science, in particular to a method for horizontal arrangement of shelterbelts. Background technique [0002] According to the natural and geographical conditions, we can establish a comprehensive forest system and achieve a reasonable forest coverage rate for each forest species and their configuration, and can achieve good technical results in the structure and configuration of shelterbelts, tree species selection, and forest management techniques. . [0003] In the prior art, by using the basic conditions of agriculture, forestry, animal husbandry, and fishery industries as constraints, a linear programming model is established to configure forest species; based on the comprehensive development strategy of forestry, with the help of System Dynamics (System Dynamics, SD ) simulation means to control the allocation of forest species; through the analytic hierarchy process based ...

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Problems solved by technology

[0004] But there is following problem in above-mentioned prior art; Under different geographical environments, different ecological conditions and different economic backgrounds, suitable shelterbelt forest species configuration pattern is different, and above-mentioned technical method has described the forest species configuration under specific background environment The model cannot be widely promoted under different social and natural conditions.

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