云南山地碳汇造林投入产出效率探究——基于DEA-Tobit模型的腾冲市380农户实证分析

The development of forestry carbon sinks is an important means of realizing the ecological value of forestry. Measuring the comprehensive efficiency of forestry carbon sink development is of great significance in promoting the rational allocation of forestry resources and realizing high-quality forestry transformation and development. Considering the compensation of ecological value of carbon sinks realized by market transactions, we included the income from carbon sinks in forestry output and comprehensively analyzed the trend of input and output efficiency of farmers' carbon sink forests. Based on the data of 380 farm households in Tengchong City, Yunnan Province under the Clean Development Mechanism(CDM) small-scale afforestation and reforestation project, the input-output efficiency of regional farm households was measured by using super-efficiency DEA. The study found that the input-output efficiency of farmers' carbon sink forests is in the stage of obvious non-efficiency but easy to improve. The efficiency shows a wave-like rising trend, and there is spatial heterogeneity, the production efficiency of farmers in the project area shows a regional distribution pattern that the west and south are better than the east and north, and the polarization of input and output efficiency among farmers is obvious, and at this stage, insisting on the expansion of the input scale is still the optimal choice for farmers to improve their efficiency. Therefore, we should further optimize the policies related to forestry carbon sinks, increase the willingness of farmers to participate in carbon sink afforestation, and encourage farmers to obtain higher input-output efficiency by optimizing the allocation of forestry resources, so as to achieve a win-win situation for both ecological development and farmers' income.