# A Perfect Decomposition Model for Analyzing Transportation Energy Consumption in China
## 3 Effective Verification and Case Study
### Perfect Decomposition Results Analysis
It is transportation turnover volume, transportation structure and transportation energy consumption intensity of five transportation modes changes on the influence of transportation energy consumption, which are shown in Table 3. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Years** & \(\Delta E_{D}\) & \(\Delta E_{S}\) & \(\Delta E_{I}\) & \(\Delta E\) & \(\Delta\)TE & \(\Delta TER\) \\ \hline
1985–1986 & 340.21 & 32.75 & \(-141.23\) & 231.72 & 108.49 & 2.56 \\
1986–1987 & 431.09 & 181.26 & \(-172.46\) & 439.90 & \(-8.80\) & \(-0.19\) \\
1987–1988 & 412.91 & 170.07 & \(-280.40\) & 302.58 & 110.33 & 2.22 \\
1988–1989 & 196.77 & \(-33.64\) & \(-51.38\) & 111.75 & 85.02 & 1.68 \\
1989–1990 & \(-63.88\) & 46.12 & 55.58 & 37.82 & \(-101.70\) & \(-2.07\) \\
1990–1991 & 283.64 & \(-37.40\) & \(-159.97\) & 86.28 & 197.36 & 3.73 \\
1991–1992 & 361.64 & 93.44 & \(-231.47\) & 223.61 & 138.03 & 2.53 \\
1992–1993 & 388.21 & 50.38 & \(-183.30\) & 255.29 & 132.92 & 2.33 \\
1993–1994 & 414.79 & 72.13 & \(-63.15\) & 423.77 & \(-8.98\) & \(-0.15\) \\
1994–1995 & 167.67 & 116.10 & \(-89.85\) & 193.92 & \(-26.25\) & \(-0.43\) \\
1995–1996 & 241.12 & 66.81 & 142.52 & 450.45 & \(-209.33\) & \(-3.25\) \\
1996–1997 & \(-376.25\) & 448.84 & \(-18.99\) & 53.61 & \(-429.86\) & \(-6.85\) \\
1997–1998 & \(-42.96\) & 187.87 & 195.32 & 340.23 & \(-383.19\) & \(-5.75\) \\
1998–1999 & 209.89 & 123.32 & 378.85 & 712.06 & \(-502.17\) & \(-6.93\) \\
1999–2000 & 1139.04 & \(-299.36\) & \(-760.84\) & 78.85 & 1060.19 & 11.92 \\
2000–2001 & \(-30.15\) & 205.71 & 528.81 & 704.36 & \(-734.51\) & \(-9.41\) \\
2001–2002 & 610.43 & 75.41 & \(-107.62\) & 578.22 & 32.20 & 0.35 \\
2002–2003 & 552.78 & \(-126.55\) & 24.64 & 450.87 & 101.90 & 1.05 \\
2003–2004 & 1719.26 & \(-287.88\) & \(-184.78\) & 1246.60 & 472.66 & 4.19 \\
2004–2005 & 1225.18 & \(-9.56\) & 343.83 & 1559.46 & \(-334.27\) & \(-2.78\) \\
2005–2006 & 1322.41 & 208.45 & \(-479.51\) & 1 OS 1.34 & 271.06 & 1.98 \\
2006–2007 & 1794.73 & 308.25 & \(-291.36\) & 1811.62 & \(-16.89\) & \(-0.11\) \\
2007–2008 & 1663.56 & 612.10 & \(-102.06\) & 2173.60 & \(-510.04\) & \(-3.02\) \\
2008–2009 & 698.49 & 1017.68 & \(-349.13\) & 1367.05 & \(-668.56\) & \(-3.69\) \\
2009–2010 & 2985.27 & 344.51 & \(-526.76\) & 2803.02 & 182.25 & 0.84 \\
2010–2011 & 2759.44 & 318.17 & \(-644.49\) & 2433.12 & 326.32 & 1.34 \\
2011–2012 & 1650.27 & 1438.64 & 23.83 & 3112.74 & \(-1462.47\) & \(-5.70\) \\
1985–2012 & 26,504.38 & 5190.34 & \(-8460.89\) & 23,233.83 & 3270.55 & 30,395.08 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: The decomposed results. From the decomposition results of this perfect method in the share of transport volume contribution, the energy demand is increased with the growth of each mode transportation volume. Railway transportation turnover volume plays a dominant role from the 1985-1987, and contribution rate is more than road transportation rate, at 51.87%, 50.20% and 45.95%, respectively. With the rapid development of highway, road transportation turnover volume increase during 1987-1988, the contribution share of highway is more than rail for the first time. Since 1995-1996, the contribution share is more than 50% and continues to increase. The highest contribution share reached 74.72% from 2010-2011. Certain volatility exists in other modes of transportation. Highway is the dominant in the changes of the transportation structure, in the total contribution of the transportation structure, and the contribution of highway was more than 30% apart from 1988-1989. Therefore, the adjustment of the transportation structure is the key to reduce energy demand. Railway plays an obvious energy saving role in the transportation structure in two-thirds of the analysis period. The change of air transport structure over a few years has an energy saving effect. Pipeline plays a certain role in energy saving during more than half of the analysis period. The change of water transportation turnover volume saves energy over eight years.