The invention relates to the field of environmental assessment systems, and in particular to a rural environmental assessment
system based on a county scale, comprising: a
data acquisition module for collecting environmental
impact data information within the county scale; a subdomain division module for determining the divided subdomains according to industrial
impact assessment values and commercial characteristic area ratios; an indicator evaluation module for determining the county environmental assessment based on environmental
impact parameters of corresponding subdomains, determining the
extraction ratio of the
sample number of positive environmental impact indicators to the
sample number of negative environmental impact indicators according to subdomain type characteristic values, and determining whether the extraction number of negative environmental impact indicators meets a preset standard according to historical
ecological stability characteristic values; and a neighborhood impact module for increasing the absolute value of the assigned value of the negative environmental
impact indicator when determining that the neighborhood has a negative impact on the environment within the county according to the
vegetation coverage rate within a preset boundary range, thereby improving the accuracy of the environmental assessment.