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A nonparametric distance function approach with endogenous direction for estimating marginal abatement costs of CO_(2) emissions

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Journal of Management Science and Engineering 2022年第2期7卷 330-345页

作者： Fei Wu Dan-Jun Ji Dong-Lan Zha De-Qun Zhou Peng Zhou College of Economics and Management&Research Centre for Soft Energy Science Nanjing University of Aeronautics and AstronauticsNanjing211106China School of Economics and Management&Institute for Energy Economics and Policy China University of PetroleumQingdao266580China

The directional distance function(DDF)framework has been widely used to estimate the marginal abatement cost(MAC)of CO_(2)emissions to support decision-making in environmental sustainability and climate change *** the use of DDF,an important task is mapping evaluated entities towards a realistic production technology *** study develops a new nonparametric approach for estimating the MAC of CO_(2)*** approach incorporates the optimal endogenous direction into an enhanced environmental production technology and has three ***,it avoids the arbitrariness in mapping ***,it captures the heterogeneity in optimization paths across different decision-making units(DMUs).Third,it generates more reliable benchmarks for estimating MAC by constructing an environmental technology frontier that is consistent with the material balance *** apply the approach to study China's thermal power industry and find clear heterogeneity in MACs and optimization paths at the province *** results on the optimal endogenous directions show that the DMUs prefer to increase both desirable output and CO_(2)emissions when CO_(2)emissions are *** with other approaches reveal that arbitrarily mapping exogenous directions and technology representations are likely to generate distorted and unrealistic MACs.

关键词： Marginal abatement cost Carbondioxideemissions Directional distance function Weak disposability dataenvelopment analysis

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Is Larger Scale Better? Evidence from Rice Farming in Jianghan Plain

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Journal of Resources and Ecology 2018年第4期9卷 352-364页

作者： WANG Jiayue XlN Liangjie Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Small-scale household agricultural production has been in conflict with China＇s agricultural *** the context of vigorously promoting rural land circulation and moderate scale management nationwide,research on the relationship between farm size and scale efficiency has become increasingly *** this paper,we use the ＂DEA-OLS＂ two stage method to analyze data from 368 surveys of rice farming households in the Jianghan *** scale efficiency of rice farming was calculated,and the relationship between farm size and scale efficiency *** results indicate that（1） the rice farm size is generally small in Jianghan Plain,with an average of 0.77 *** average scale efficiency is 0.88,and it is the main factor limiting an increase in comprehensive technical ***,88.32% of households are in the stage of increasing returns to scale.（2） There is a stable inverted ＂U＂ type relationship between rice farm size and scale *** characteristics of the householder,the household and land quality,the maximum scale efficiency corresponds to a household with 5 ha of rice farm.（3） Among householder characteristics,age has a significant negative influence on scale efficiency,and scale efficiency is lower for a household whose householder is engaged in non-farm work than for one whose householder is devoted to *** for land quality,there was a significant positive effect of irrigation on scale *** family characteristics,the application of a machine during the seeding process increased scale efficiency by 3.07%.Therefore,we suggest that local government should actively promote rural land circulation,implement a staged-scale management subsidy,and other forms of support for the purchase of agricultural machinery and technical *** investment in irrigation improvements and mechanical facilities and encouragement of farmers to enlarge their farm size could improve scale efficiency and farmin

关键词： Jianghan Plain rice farming farm size scale efficiency moderate scale management dataenvelopment analysis

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