Environmental efficiency measures for ports: an application of RAM-Tobit-RAM with undesirable outputs
Environmental efficiency measures for ports: an application of RAM-Tobit-RAM with undesirable outputs
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DOI：
10.1080/03088839.2017.1319982
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发表时间：
2017-04
影响因子：
3.5
通讯作者：
Q. Cui
中科院分区：
文献类型：
--
作者：
Q. Cui
本文对港口的环境效率进行了测度。以劳动力、资金和基础设施投入为投入，以集装箱吞吐量、货物吞吐量和主营业务收入为产出，以CO2排放量为非期望产出。建立了一个新的评价环境效率的模型-RAM-Tobit-RAM（Range Adjusted Measure）模型。以2004 - 2013年中国10个港口为样本，验证了该模型的合理性。结果表明，扩大港口规模并不一定有利于环境效率的提高。
ABSTRACT In this paper, the environmental efficiency of the ports is measured. Labour, fund and infrastructure input are selected as the inputs, container throughput, cargo throughput and main business income are selected as the outputs, CO2 emission is chosen as the undesirable output. A new model—RAM-Tobit-RAM (Range Adjusted Measure) with undesirable outputs is built to evaluate the environmental efficiency. Ten Chinese ports from 2004 to 2013 are taken as the samples to verify its rationality. The results suggest that it is not necessarily beneficial for environmental efficiency to expand the port scale.