水土保持研究2024，Vol.31Issue(1)：335-344,10.DOI:10.13869/j.cnki.rswc.2024.01.037
"双碳"目标下东北黑土区耕地利用生态效率时空格局与演变趋势
Temporal-Spatial Pattern and Evolutionary Trend of Ecological Efficiency of Cultivated Land Use in Northeast Black Soil Areas Under the'Carbon Peak and Neutrality'Target
摘要
Abstract
[Objective]It is crucial for the goal of emission reduction and efficiency increase as well as'carbon peak and neutrality'in black soil to explore the temporal and spatial pattern and evolutionary trend of the ecological efficiency of cultivated land use in the black soil areas of Northeast China,and to integrate carbon source and sink into the process of cultivated land utilization.[Methods]Based on the super-efficiency SBM model,kernel density estimation,exploratory spatial data analysis and spatial interpolation tools,this paper systematically investigated the spatio-temporal characteristics and evolution patterns of the ecological efficiency of cultivated land use in the black soil areas of northeast China from 2006 to 2020.[Results]The ecological efficiency of cultivated land use in the black soil areas had experienced three stages of fluctuating rise,significant decline and rapid recovery,generally at a high level of development.In addition,the efficiency value of the northern marginal cities was significantly higher than that of the central and southern areas.The polarization situation between the base period and the end of the period was particularly significant,and the overall development was seriously unbalanced.The overall spatial correlation characteristics of the ecological efficiency of cultivated land use in black soil areas were not obvious,generally presenting an6edge center'spatial diffusion pattern,which decreased from the high value concentration at the north and south ends to the inside and around,and then formed a number of blocky high value areas and low value distribution belts.The scale agglomeration advantage was underutilized.Input and output redundancy existed to varying degrees in most cities.The problem of labor and fertilizer redundancy was relatively severe.Carbon emission redundancy was a common factor that causes the loss of ecological efficiency of farmland use in black soil areas.Optimizing the structure of factor allocation and paying attention to pollution emission reduction were important ways to improve the ecological efficiency of regional farmland use.[Conclusion]The optimization of factor allocation and pollution emission reduction control has become the key improvement direction of black soil utilization,and it is also the key path to improve the ecological efficiency of cultivated land utilization in black soil areas.关键词
耕地利用生态效率/"双碳"目标/超效率SBM模型/时空格局/东北黑土区Key words
ecological efficiency of cultivated land use/'carbon peak and neutrality'target/super-efficiency SBM model/temporal and spatial pattern/black soil areas of northeast China分类
资源环境引用本文复制引用
崔宁波,王婷,董晋.."双碳"目标下东北黑土区耕地利用生态效率时空格局与演变趋势[J].水土保持研究,2024,31(1):335-344,10.基金项目
国家社会科学基金项目(23BJY188) （23BJY188）
国家社会科学基金项目(20BJY149) （20BJY149）
