碳排放视角下的江苏省土地利用转型生态效率研究——基于混合方向性距离函数

发布时间：2018-01-23 12:51

本文关键词： 碳排放土地利用转型生态效率混合方向性距离函数 GML指数　出处：《自然资源学报》2017年10期 　论文类型：期刊论文

【摘要】：生态效率关乎经济与生态之间的双重问题,要保证在实现社会经济正常发展的同时将环境影响控制到最小程度。CO_2等温室气体的排放作为造成全球气候变暖的主要产物,成为改善全球环境问题的焦点。土地利用转型在一定程度上影响着土地生态,并从土地的投入和产出方面影响土地生态效应,分析其影响机理将有助于最小化土地利用成本,最大化土地生态价值。论文运用混合方向性距离函数模型和Global Malmquist-Luenberger(GML)指数,将CO_2排放量作为生态效率的非期望产出指标,构建土地利用转型投入和产出指标体系,测算2006—2014年江苏省13个城市在土地利用转型背景下的生态效率及环境全要素生产率增长状况,并对全要素生产率变动进行分解,以期缓解经济快速增进带来的生态环境问题。研究结果表明:CO_2过度排放以及能源过度消耗,使得很多城市普遍存在生态低效率;2006—2014年江苏省总体平均生态效率值为0.827,若能够充分利用当前技术水平,资源强度和污染排放强度在平均意义上可以提高17%;江苏省生态效率变化区域差异明显,生态效率存在空间关联性和集聚效应;环境全要素生产率增长呈现地域不均衡性,纯技术进步是影响环境全要素生产率增长变动的重要影响因素;技术规模变化的区域差异幅度最大,是构成环境全要素生产率增长差异的重要因素。
[Abstract]:Ecological efficiency is a dual problem between economy and ecology. It is necessary to ensure that the greenhouse gas emissions, such as environmental impact, should be kept to the minimum while the normal social and economic development is realized, and that greenhouse gas emissions such as .CO-2 will be regarded as the main product of global warming. Land use transformation affects land ecology to a certain extent and impacts land ecological effects from input and output of land. The analysis of its influence mechanism will help to minimize the land use cost. The mixed directional distance function model and Global Malmquist-Luenberger index were used to maximize the ecological value of land. The CO_2 emission is regarded as the non-expected output index of ecological efficiency, and the input and output index system of land use transformation is constructed. The ecological efficiency and environmental total factor productivity (TFP) growth of 13 cities in Jiangsu Province from 2006 to 2014 in the context of land use transformation were measured and the total factor productivity changes were decomposed. In order to alleviate the ecological and environmental problems brought by rapid economic growth, the research results show that the excessive emission and excessive consumption of energy in the cities make many cities generally have ecological inefficiency; The average ecological efficiency of Jiangsu Province from 2006 to 2014 is 0.827. If the current technology level can be fully utilized, the resource intensity and pollution emission intensity can be increased by 17% on average. There are obvious regional differences in the changes of ecological efficiency in Jiangsu Province, and there is spatial correlation and agglomeration effect in ecological efficiency. The growth of environmental total factor productivity (TFP) presents a regional imbalance, and pure technological progress is an important factor affecting the change of environmental TFP. The range of regional variation of technological scale is the largest, which is an important factor to make up the difference of environmental total factor productivity (TFP) growth.
【作者单位】：南京农业大学公共管理学院;
【基金】：国家自然科学基金重点项目(71233004)~~
【分类号】：F301.24
【正文快照】： 生态效率的界定首先在1990年由Schaltegger和Sturm提出,世界可持续发展商业理事会(WBCSD)将其定义为,提供能满足人类需要和提高生活水平的有价格竞争优势的产物,并对生态环境和资源消耗的影响逐渐减少到和预估的地球承载水平相同的程度,并同时达到环境与社会协调发展的目标[1]

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