Abstract
The rational planning of urban spatial distribution and development direction could benefit the urban economy, social environment and other aspects, as an essential part of urban planning. Since the Law of EIA promulgated in 2003, the scope of environmental impact assessment has been upgraded to a higher level of overall urban planning whereas the influence is not significant. In 2018, urban and rural planning function was merged into the Ministry of Natural Resources, from leading urban construction to serving the protection of urban natural resources. It is also a new and significant approach to analyse the rationality of urban spatial distribution and development direction from the perspective of environmental impact assessment. The purpose of Jianghua Yao autonomous county is to build an eco-tourism civilized city, which is representative in the selection of cities for environmental impact assessment. On the space structure of functional areas and the development direction to the indicator elements of Yao nationality autonomous county class was divided into 4 categories, 5 layers,15 index factors were selected to construct the environmental impact assessment index system. Using analytic hierarchy process (AHP) to select the indexes weights assignment, then according to the evaluation criterion to evaluate it, we draws the analysis conclusion in the environment aspect. The planned urban spatial distribution and development direction of Jianghua Yao autonomous county from 2014 to 2020 are reasonable, have little negative impact on the environment, and are suitable for the green development of the city.
Highlights
Since the Law of EIA promulgated in 2003, the scope of environmental impact assessment has been upgraded to a higher level of overall urban planning whereas the influence is not significant
Some scholars put forward the urban development preference model and farmland loss model based on the smart growth of urban spatial development direction to identify the "smart" spatial expansion direction of the urban [1] or use land suitability evaluation to carry out land use planning for urban sustainable development [2]
As an expression of the environmental impact characteristics of the planning area, the importance and weight of the indicators should be distinguished in the planning environmental impact assessment index system, that is, different indicators should be given different weights
Summary
Since the Law of EIA promulgated in 2003, the scope of environmental impact assessment has been upgraded to a higher level of overall urban planning whereas the influence is not significant. The traditional method to determine the spatial distribution and development direction of the city is to delimit the four districts, evaluate the suitability of construction land and determine the function, nature and development direction of the city based on the analysis of urban development conditions. GIS contains analytical tools to help with urban problems, providing the user with extra useful functionality [3]. They all lack of consideration of the perspective of environment. This paper will evaluate the overall planning of Jianghua from the perspective of environmental impact and draw a conclusion
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