Spatial-temporal characteristics and regional differences of the freight transport industry's carbon emission efficiency in China.

Environ Sci Pollut Res Int · 2022 · PMC9163528 · PMID 35657550

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a decreasing trendno p-value reported

The eastern region’s CEE had a steady development trend, the central and western regions showed a decreasing trend, and the western region declined significantly.

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an increasing trendno p-value reported

This indicates that in the three given periods, the absolute difference in the freight transport’s CEE shows an increasing trend and reaches the maximum in 2014.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.