[Spatiotemporal Pattern and Carbon Balance Zoning of County Land Use Carbon Emissions in the Yellow River Basin].
摘要
of the indirect carbon emissions estimation model for construction land was 0.867 3， and the simulation accuracy was good. Thus， the estimation effect could reach the expectation. ② The construction land area in the Yellow River Basin showed a trend of continuous increase， while the cultivated land area showed a trend of continuous decrease. ③ The overall change of carbon sink was stable， and there was a trend of high carbon sink in the southeast and low carbon sink in the northwest. The amount of carbon sources and the net carbon emissions showed a rapid increasing trend， while their growth rates slowed. ④ There was a significant positive spatial correlation between land use carbon emissions at the county level. The proportions of low-low aggregation area and high-low aggregation area increased slightly， and the proportions of high-high aggregation area and low-high aggregation area decreased slightly. ⑤ The economic carrying capacity of carbon emissions and the ecological carrying capacity of carbon sink at the county level showed the same characteristics. In 2020， the low-carbon conservation area accounted for 16.61% of the total， the economic development area accounted for 19.33%， the carbon sink development area accounted for 27.38%， and the comprehensive optimization area， which was the largest regional type， accounted for 36.68%. The research results provide a theoretical reference for cooperative carbon emissions source reduction and carbon sink improvement for 957 county units in the Yellow River Basin and also provide a practical basis for promoting high-quality development of the Yellow River Basin， thus becoming an important benchmark for major river governance.