A land ecological quality automatic evaluation method

Abstract

The invention provides a land ecological quality automatic evaluation method which comprises the following steps: step 1, data preprocessing, and the data comprises a basic geographic information element, a land ecological survey element and a land ecological evaluation element; Step 2, performing data standardization; Step 3, establishing a land ecology evaluation index system; Step 4, calculating the weight value of each index by adopting analytic hierarchy process and an entropy weight method; Step 5, performing evaluation by adopting a method of combining a comprehensive evaluation methodand obstacle factor diagnosis; and Step 6, grading according to the system assessment structure. According to the invention, the automatic evaluation mode is adopted to carry out land ecology evaluation on the area; the land ecological quality evaluation system overcomes the defects of a regional evaluation system or an evaluation system only aiming at a land ecological quality unilateral aspect,a GIS space automatic processing function is added, meanwhile, data are effectively organized, a relative reference platform is provided for land ecological evaluation, and the working efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of environment, in particular to an automatic evaluation method for land ecological quality. Background technique [0002] Land ecological quality evaluation refers to the evaluation of the structure, function, value and ecological environment quality of land ecosystem. The content of land ecological quality evaluation includes the evaluation of land ecological structure and value, the evaluation of land ecological foundation and ecological characteristics, the evaluation of the combination of natural ecological quality and human social activities or socio-economic processes, and the degradation, damage or potential of land ecological environment. Dangerous assessment. Most of the evaluation system studies of land ecological quality in the prior art focus on land degradation evaluation, suitability evaluation, sensitivity evaluation, vulnerability evaluation, ecological risk evaluation and ecological security evaluat...

AI Technical Summary

Problems solved by technology

However, most of the current land ecological quality evaluation studies are regional land ecological evaluation studies or studies that only focus on certain aspects such as suitability, vulnerability, etc., ignoring overall factors, and comprehensively construct land evaluation based on GIS technology. The method has not been established yet, and there is a lack of methods suitable for land ecological evaluation in most areas. The main reason is that the amount of data is relatively large, and there is no automated evaluation method to support the establishment of functional relationships between data and the determination of data relationships between different land types.

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