Sichuan-Western forest disk evaluation model construction method based on ArcGIS platform

Abstract

The invention discloses a Sichuan-Western forest disk evaluation model construction method based on ArcGIS platform. The method comprises the following steps of: formulating an evaluation index systemof a Sichuan-Western forest disk, wherein the Sichuan-Western forest disk evaluation index system comprises a first-level evaluation index, a second-level evaluation index and an index evaluation item, weight assignment is performed on the first-level evaluation index and the second-level evaluation index, and the evaluation method for determining each level of index in the evaluation index system comprises the following steps: evaluating an index evaluation item to obtain an evaluation value of a secondary evaluation index; carrying out weighted calculation on the evaluation values of the secondary evaluation indexes according to the corresponding weights to obtain evaluation values of the primary evaluation indexes; carrying out weighted calculation on the evaluation values of the first-level evaluation indexes according to the corresponding weights to obtain an overall evaluation result; in the ArcGIS model builder, according to the secondary evaluation index, using a related toolto build a subitem evaluation model; and according to the first-level evaluation index, establishing an overall evaluation model by using a related tool. According to the invention, quantification, standardization, processization and automation of Sichuan-Western forest disk evaluation work are promoted.

Description

technical field [0001] The invention relates to the technical field of environmental evaluation, in particular to a method for constructing an evaluation model of western Sichuan forests based on an ArcGIS platform. Background technique [0002] The application of GIS technology in the planning and construction of my country's urban areas is becoming more and more mature, but in the planning, construction and management of rural areas, the application of GIS technology is still lagging behind, and the research on the evaluation of Linpan in western Sichuan is even more lacking. The western Sichuan Linpan evaluation model is a targeted evaluation model, which is not standardized and systematic at present. The traditional evaluation methods and means mainly have the following problems and defects: [0003] 1. The traditional evaluation technology is relatively backward, and the threshold for using new technologies is relatively high, resulting in technical operations that cann...

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Problems solved by technology

[0003] 1. The traditional evaluation technology is relatively backward, and the threshold for using new technologies is relatively high, resulting in technical operations that cannot keep up with the pace of theoretical research;

[0004] 2. Traditional evaluation methods are more perceptual, mostly using qualitative analysis methods and means, lacking quantitative data support, and scientific and rationality need to be improved;

[0005] 3. Traditional evaluation methods and means are time-consuming and labor-intensive, and most of them require manual calculations, resulting in low work efficiency;

[0006] 4. The traditional evaluation methods and means are not conducive to the systematization, standardization and storage of the work process. It is necessary to rethink the process in the next work, and the reuse rate is extremely low;

[0007] 5. The traditional evaluation method is not conducive to the display and visual expression of the results and process documents, and the persuasiveness of the plan is weak;

[0008] 6. Traditional evaluation methods and means are more focused on theoretical methods, and it is difficult to achieve the combination of attributes and spaces technically

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