Urban human settlement environment suitability comprehensive evaluation method based on nature and humanity multiple elements

Abstract

In traditional urban human settlement environment suitability evaluation based on remote sensing images, the evaluation scale mostly focuses on a large-area administrative region and focuses on the influence of natural factors, so that the evaluation result is relatively one-sided and not accurate enough. In order to solve the problems, the invention discloses an urban built-up area human settlement environment suitability evaluation index system based on multiple natural and humanistic factors, and a method for weighting each index by utilizing a raster data principal component analysis method. The method comprises the following steps: step 1) extracting an urban impervious surface by adopting a biophysical component index (BCI), eliminating abnormal values and then establishing a bufferarea to generate an urban built-up area; and step 2) based on principles of scientificity and practicability, constructing an urban land surface environment comprehensive evaluation index system basedon remote sensing raster data by taking urban vegetation, water, an impervious surface and temperature as natural element indexes influencing the urban human settlement environment and taking night light, air quality and traffic as humanistic element indexes influencing the urban human settlement environment; and 3) according to the constructed urban human settlement environment suitability indexsystem, carrying out single factor index selection and measurement; 4) selecting a grid data principal component analysis method to measure the weight of each index of the urban human settlement environment according to the characteristics of the remote sensing grid data, and 5) according to the calculated weight of each index of the urban human settlement environment, performing grid weighted superposition processing on each index layer to obtain an urban human settlement environment livability evaluation result.

Description

technical field [0001] The present invention designs a comprehensive evaluation method for the suitability of urban human settlements based on multiple elements of nature and humanities, which can better form an evaluation process for the suitability of urban human settlements on the scale of urban built-up areas, and realize the evaluation of urban human settlements. Suitability spatial analysis and temporal-spatial change analysis provide a reference for urban environmental governance. Background technique [0002] In recent years, as urban environmental problems have become increasingly prominent, in order to alleviate the deepening urban environmental problems and find a rhythm that is conducive to the sustainable and healthy development of the economy, my country has formulated many strategies for urban environmental improvement and governance, but the suitability of urban living environment Evaluation is one of the most important methods. The human settlement environme...

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Problems solved by technology

Xu Hanqiu et al. have made relevant attempts on the ecological evaluation of urban remote sensing. Their research mainly focuses on the utilization of natural environment remote sensing information, and the use of humanistic remote sensing information is insufficient.

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