ORIGINAL RESEARCH
Evaluation of County Agricultural Eco-Efficiency
in Chongqing and Analysis of Its Spatiotemporal
Differentiation under the Dual Carbon Target
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1
College of Economics, Chongqing Finance and Economics College, Chongqing, No.906, Shangwen Road,
Banan District, Chongqing, 401320, China
2
Institute of Green Development, Chongqing Finance and Economics College, Chongqing, No.906, Shangwen Road,
Banan District, Chongqing 401320, China
3
Research Center for Economy of Upper Reaches of the Yangtze River, Chongqing Technology and Business University,
Chongqing, No.19, Xuefu Road, Nan ‘an District, Chongqing, 400067, China
Submission date: 2023-08-26
Final revision date: 2023-10-27
Acceptance date: 2023-11-02
Online publication date: 2024-01-15
Publication date: 2024-02-28
Corresponding author
Xiaoshuang Liu
College of Economics, Chongqing Finance and Economics College, Shangwen, 401320, Chongqing, China
Pol. J. Environ. Stud. 2024;33(3):2177-2191
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ABSTRACT
Reducing and sequestering agricultural carbon is a crucial measure for achieving carbon neutrality
and carbon peak, as well as an integral component of agricultural modernization. This study uses
the super-efficiency Slack-based measure-Data envelopement analysis (SBM-DEA) and Exploratory
spatial data analysis (ESDA) models to examine the spatiotemporal differentiation characteristics
of agricultural ecological efficiency (AEE) in 38 districts and counties of Chongqing. The results
indicate that the CRR-DEA model disregards the impact of undesirable output factors and overestimates
the actual utilization of agricultural resources, whereas the super-efficiency SBM-DEA model is
more consistent with the actual agricultural production process. Chongqing’s AEE was at a high level
of efficiency and the distribution of spatial pattern is uneven, displaying a development pattern
of “The urban agglomeration in the Three Gorges Reservoir area of Northeast Chongqing (UTC)>Main
urban metropolitan area (MUA) > Wuling Mountain urban agglomeration in southeast Chongqing
(WUC)”, and there is a significant agglomeration characteristic among various districts and counties.
The High-High (H-H) agglomeration is primarily concentrated in the central urban area and
the Low-Low (L-L) agglomeration area is primarily located in the eastern portion of UTC. Consequently,
all regions in Chongqing should combine their own agricultural development characteristics, maximize
their strengths, compensate for their weaknesses, and thereby enhance the AEE.