Abstract
Aiming at the ecological footprint model, the traditional trade adjustment method only considered the international trade process at the urban scale, ignoring the trade footprint generated by domestic trade and indirect trade in various products. This paper adopts the urban-scale ecological footprint model based on the macro-trade adjustment method to calculate the trade adjustment coefficient of biological products and the energy trade adjustment coefficient respectively to correct the trade footprint. The results showed that the per capita ecological deficit showed a straight upward trend, from 0.07351 hm2 in 2013 to 0.15472 hm2 in 2018. From 2013 to 2018, the per capita ecological footprint of Guangdong Province was greater than the per capita ecological carrying capacity, and the ecological economic system of Guangdong Province was in an unsustainable state. According to the trade ecological footprint, Guangdong Province was a completely foreign resource and service exporting city, which was consistent with Guangdong Province’s own economic development direction; the analysis results of the ecological product trade footprint were more consistent with the current city positioning of biological resource products of each city, and the energy indirect trade footprint. The improved ecological footprint model could more accurately assess the true status of ecological vitality above the urban scale.
Highlights
Aiming at the ecological footprint model, the traditional trade adjustment method only considered the international trade process at the urban scale, ignoring the trade footprint generated by domestic trade and indirect trade in various products
Guangdong Province has shown a downward trend since 2016, and the Guangdong resource utilization rate has increased since 2016, which might be related to the policy of "returning farmland to forests" and other policies
(1) According to calculations, the per capita ecological footprint of Guangdong Province increased from 0.24577 hm[2] in 2013 to 0.31911 h m2 in 2018, and the per capita carrying capacity decreased from 0.17186 hm[2] in 2013 to 0.16439 hm[2] in 2018
Summary
Aiming at the ecological footprint model, the traditional trade adjustment method only considered the international trade process at the urban scale, ignoring the trade footprint generated by domestic trade and indirect trade in various products. After continuous exploration by scholars, ecological footprint method has gradually been used as a method to measure and reflect the changes of ecological environment between international trade It converted import and export commodities into the biological production-type land area which was required for production and consumption of commodities, and pursued the surplus of ecological footprint in trade[23]. Traditional net trade often used the international ecological footprint model (production = import–export) to achieve trade adjustment It only considered the impact of trade between different countries, while ignored the trade process of trade and processed products between different cities, and did not reflect the impact of urban consumption on the ecological environment in the process of urban development. How to improve local resource utilization efficiency and sustainable development capacity has become a top priority
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