Comprehensive Evaluation and Influencing Factors of Sustainable Development in Gansu Section of Weihe River Basin Based on Three-dimensional Ecological Footprint
Comprehensive Evaluation and Influencing Factors of Sustainable Development in Gansu Section of Weihe River Basin Based on Three-dimensional Ecological Footprint
The stability and sustainable development of the ecosystem of the Weihe River Basin is the key for realizing the protection and high-quality development strategy of the Yellow River Basin.This study took the Gansu section of the Weihe River Basin as the study area,evaluated the ecological security status and its changing patterns from 2005 to 2020 based on the ecological footprint theory and the improved three-dimensional ecological footprint model,and on this basis comprehensively evaluated the ecological sustainability of the Weihe River Basin and its supply and demand balance.The results showed that the ecological footprint,ecological carrying capacity and ecological deficit of the Gansu section of the Weihe River Basin from 2005 to 2020 were all on the rise.The growth rate of ecological footprint was faster than that of ecological carrying capacity,and the ecological deficit of the region was on the rise,indicating that the supply of regional resources was less than the demand direction.The breadth and depth of the ecological footprint showed an increasing trend.The stock of capital in the study area was over-appropriated,ecological security was threatened,and it was in a more ecologically insecure state,with higher ecological pressure;the ecological sustainability of the regional land had shifted from a basic balance to a mildly unsustainable stage,and there was still a trend of further deterioration.The ecologically moderate population was also decreased in proportion to the actual population,with a lower space for population growth,making it difficult to secure ecological sustainability in a stable manner.In addition,the change of ecological footprint was influenced by natural environment,economy,social growth and other factors,among which the built-up area,urbanization rate,GDP per capita,and output value of various industries were positively correlated with the increase of ecological footprint.
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