托運行李所產生的二氧化碳排放量超越了 156 個國家
目次
1：全球托運行李所產生的二氧化碳排放量
2：不攜帶任何行李時的二氧化碳減排效果
1：全球托運行李所產生的二氧化碳排放量
到目前為止，我們已經分析了在飛往日本的航班上不攜帶任何行李時能減少二氧化碳排放量的効果。而這一次我們將向各位解說全世界的航空業攜帶行李時所產生的二氧化碳排放量。
根據「Project Drawdown」的調查，2018年全球航空業所產生的二氧化碳排放量約佔全球排放量的2.6%。同時世界銀行的數據顯示，2018 年全球二氧化碳排放量為 342.9 億噸（2019 年為 343.4 億噸），因此航空業所產生的的二氧化碳排放量為 8.9 億噸。並且根據國際航空運輸協會 (IATA) 的數據顯示，2019 年航空業所產生的二氧化碳排放量為 9.1 億噸。
同樣根據國際航空運輸協會統計，2019年全球的航空客運距離（收益旅客公里）為8兆6,800億公里。 因此如果所有飛機上每位乘客都有攜帶20公斤行李的情況，托運行李所產生的二氧化碳排放量則高達１億451萬噸。 佔了2019 年全球二氧化碳排放量 343.4 億噸的 0.30%。 同時也佔了2019年全球溫室氣體的二氧化碳換算排放量462.9億噸中的0.23%。
我們使用 ECTA（The European Clean Trucking Alliance）「Guidelines for Measuring and Managing CO2 Emission from Freight Transport Operations 2011（2011 年貨運業務二氧化碳排放測量和管理指南）」中提供的數據，計算攜帶托運行李（20 公斤）時所產生的二氧化碳排放量。 用於計算的空運貨物運輸量（噸/公里）二氧化碳排放強度單位為0.602kgCO2/tkm。
2：不攜帶任何行李時的二氧化碳減排效果
各位可能會認為托運行李所產生的二氧化碳排放量只佔了全球排放量的0.3%，並沒有很大的影響，但１億451萬噸的二氧化碳排放量已經超越了比捷克（9629萬噸）、比利時（9301萬噸）等156個國家所產生的排放量。 不攜帶任何行李所減少的排放效果十分有效。
Annual CO2 emissions (million tonnes、2019)
| World | 34,344 | 100.0% |
| High income | 12,126 | 35.3% |
| OECD members | 11,611 | 33.8% |
| China | 10,707 | 31.2% |
| United States | 4,818 | 14.0% |
| India | 2,456 | 7.2% |
| Russian Federation | 1,704 | 5.0% |
| Japan | 1,082 | 3.1% |
| Germany | 657 | 1.9% |
| Global aviation industry | 914.0 | 2.7% |
| Worldwide checked baggage (20 kg) | 104.5 | 0.30% |
| Czechia | 96.3 | 0.28% |
| Belgium | 93.0 | 0.27% |
| Kuwait | 92.7 | 0.27% |
| Qatar | 92.0 | 0.27% |
| Chile | 91.4 | 0.27% |
| Bangladesh | 90.7 | 0.26% |
| Colombia | 81.0 | 0.24% |
| Oman | 76.0 | 0.22% |
| Romania | 73.9 | 0.22% |
| Turkmenistan | 72.9 | 0.21% |
| Morocco | 71.5 | 0.21% |
| Austria | 64.8 | 0.19% |
| Israel | 62.7 | 0.18% |
| Greece | 60.0 | 0.17% |
| Belarus | 57.7 | 0.17% |
| Libya | 56.8 | 0.17% |
| Peru | 56.8 | 0.17% |
| Korea, Dem. People's Rep. | 56.0 | 0.16% |
| Singapore | 47.4 | 0.14% |
| Hungary | 46.4 | 0.14% |
| Serbia | 46.0 | 0.13% |
| Portugal | 44.6 | 0.13% |
| Finland | 40.7 | 0.12% |
| Ecuador | 39.3 | 0.11% |
| Bulgaria | 39.1 | 0.11% |
| Caribbean small states | 37.9 | 0.11% |
| Switzerland | 37.4 | 0.11% |
| Myanmar | 36.7 | 0.11% |
| Norway | 36.0 | 0.10% |
| Ireland | 35.8 | 0.10% |
| Azerbaijan | 35.5 | 0.10% |
| Sweden | 35.0 | 0.10% |
| New Zealand | 34.0 | 0.10% |
| Bahrain | 33.3 | 0.10% |
| Slovak Republic | 31.1 | 0.09% |
| Tunisia | 29.9 | 0.09% |
| Denmark | 29.7 | 0.09% |
| Lebanon | 28.0 | 0.08% |
| Dominican Republic | 27.2 | 0.08% |
| Cuba | 25.9 | 0.08% |
| Syrian Arab Republic | 25.7 | 0.07% |
| Angola | 25.2 | 0.07% |
| Jordan | 24.6 | 0.07% |
| Sri Lanka | 23.8 | 0.07% |
| Mongolia | 23.1 | 0.07% |
| Bolivia | 22.3 | 0.07% |
| Kenya | 22.3 | 0.06% |
| Bosnia and Herzegovina | 21.1 | 0.06% |
| Sudan | 20.6 | 0.06% |
| Ghana | 20.0 | 0.06% |
| Guatemala | 19.3 | 0.06% |
| Lao PDR | 18.7 | 0.05% |
| Ethiopia | 18.4 | 0.05% |
| Trinidad and Tobago | 17.2 | 0.05% |
| Croatia | 16.5 | 0.05% |
| Cambodia | 16.2 | 0.05% |
| Slovenia | 13.6 | 0.04% |
| Nepal | 13.4 | 0.04% |
| Panama | 13.3 | 0.04% |
| Tanzania | 12.4 | 0.04% |
| Zimbabwe | 11.8 | 0.03% |
| Lithuania | 11.7 | 0.03% |
| Yemen, Rep. | 11.1 | 0.03% |
| Cote d'Ivoire | 10.8 | 0.03% |
| Senegal | 10.6 | 0.03% |
| Honduras | 10.2 | 0.03% |
| Estonia | 10.2 | 0.03% |
| Georgia | 10.1 | 0.03% |
| Kyrgyz Republic | 10.1 | 0.03% |
| Luxembourg | 9.5 | 0.03% |
| Cameroon | 9.4 | 0.03% |
| Tajikistan | 9.4 | 0.03% |
| Moldova | 8.9 | 0.03% |
| Jamaica | 8.4 | 0.02% |
| North Macedonia | 8.3 | 0.02% |
| Costa Rica | 8.2 | 0.02% |
| Paraguay | 8.2 | 0.02% |
| El Salvador | 7.8 | 0.02% |
| Papua New Guinea | 7.6 | 0.02% |
| Latvia | 7.6 | 0.02% |
| Mozambique | 7.5 | 0.02% |
| Benin | 7.3 | 0.02% |
| Congo, Rep. | 7.3 | 0.02% |
| Botswana | 7.3 | 0.02% |
| Cyprus | 7.2 | 0.02% |
| Brunei Darussalam | 7.0 | 0.02% |
| Zambia | 6.8 | 0.02% |
| Uruguay | 6.5 | 0.02% |
| Armenia | 6.2 | 0.02% |
資料來源：世界銀行、國際航空運輸協會 (IATA)、ECTA、本公司計算
備註：摘錄了二氧化碳排放量高的國家以及因不攜帶任何行李而減少二氧化碳排放量的國家
根據「比較86種減低二氧化碳排放計畫，與搭乘飛機時不託運行李的減碳效果」的分析顯示，飛往日本的航班上不攜帶任何行李時能每年減少137 kg的二氧化碳排放量（平均旅行次數為 1.8 次）。 因現時全球的托運行李所產生的二氧化碳排放量為１億451萬噸，將此數據除以全球每年45.43 億名的旅客數，每個人單程所產生的二氧化碳排放量為 23 kg。 而來回旅程所產生的二氧化碳排放量為 46 kg，並通過不攜帶任何行李上飛機的情況下，每位旅客每年能減少二氧化碳排放量的效果（在每年一次旅行的情況下）是「Project Drawdown」所列出的減排措施排名中（按世界人口計算）的第26位。
Annual CO2 emissions reduction per capita (kg)
| SOLUTION | World population | OECD poluration | High income population | |
| 1 | Reduced Food Waste | 377.2 | 2,152.9 | 2,377.3 |
| 2 | Plant-Rich Diets | 333.8 | 1,905.5 | 2,104.1 |
| 3 | Family Planning and Education | 293.7 | 1,676.1 | 1,850.8 |
| 4 | Refrigerant Management | 243.6 | 1,390.3 | 1,535.2 |
| 5 | Tropical Forest Restoration | 232.1 | 1,324.6 | 1,462.6 |
| 6 | Onshore Wind Turbines | 200.1 | 1,142.1 | 1,261.2 |
| 7 | Alternative Refrigerants | 182.1 | 1,039.5 | 1,147.8 |
| 8 | Utility-Scale Solar Photovoltaics | 174.0 | 993.3 | 1,096.8 |
| 9 | Clean Cooking | 133.7 | 763.4 | 842.9 |
| 10 | Distributed Solar Photovoltaics | 113.6 | 648.3 | 715.9 |
| 11 | Silvopasture | 113.3 | 646.6 | 714.0 |
| 12 | Methane Leak Management | 110.1 | 628.4 | 693.9 |
| 13 | Peatland Protection and Rewetting | 108.3 | 617.9 | 682.3 |
| 14 | Tree Plantations (on Degraded Land) | 93.9 | 536.2 | 592.0 |
| 15 | Temperate Forest Restoration | 82.8 | 472.4 | 521.7 |
| 16 | Concentrated Solar Power | 76.7 | 437.9 | 483.5 |
| 17 | Perennial Staple Crops | 69.6 | 397.5 | 438.9 |
| 18 | Insulation | 65.6 | 374.1 | 413.1 |
| 19 | Regenerative Annual Cropping | 64.4 | 367.8 | 406.2 |
| 20 | Tree Intercropping | 64.1 | 365.6 | 403.7 |
| 21 | LED Lighting | 61.6 | 351.5 | 388.2 |
| 22 | Managed Grazing | 58.5 | 333.8 | 368.5 |
| 23 | Multistrata Agroforestry | 56.5 | 322.6 | 356.2 |
| 24 | Conservation Agriculture | 54.6 | 311.6 | 344.1 |
| 25 | Abandoned Farmland Restoration | 53.2 | 303.6 | 335.2 |
| Reduced 20kg luggage | 46.0 | |||
| 26 | Recycling | 44.2 | 252.0 | 278.3 |
| 27 | Offshore Wind Turbines | 43.6 | 248.6 | 274.5 |
| 28 | Improved Rice Production | 42.0 | 239.6 | 264.6 |
| 29 | Building Automation Systems | 40.7 | 232.3 | 256.5 |
| 30 | Public Transit | 40.1 | 229.2 | 253.0 |
| 31 | Efficient Trucks | 39.0 | 222.6 | 245.8 |
| 32 | Carpooling | 38.6 | 220.4 | 243.4 |
| 33 | High-Performance Glass | 37.6 | 214.6 | 236.9 |
| 34 | Indigenous Peoples’ Forest Tenure | 37.0 | 211.4 | 233.4 |
| 35 | Bamboo Production | 32.8 | 187.3 | 206.8 |
| 36 | Alternative Cement | 32.8 | 187.3 | 206.8 |
| 37 | Electric Cars | 32.6 | 186.3 | 205.8 |
| 38 | Smart Thermostats | 29.5 | 168.1 | 185.6 |
| 39 | Efficient Ocean Shipping | 28.6 | 163.5 | 180.5 |
| 40 | Waste to Energy | 26.7 | 152.5 | 168.4 |
| 41 | District Heating | 26.3 | 150.3 | 166.0 |
| 42 | Geothermal Power | 26.2 | 149.6 | 165.2 |
| 43 | Methane Digesters | 25.7 | 146.4 | 161.7 |
| 44 | Forest Protection | 23.7 | 135.0 | 149.1 |
| 45 | Efficient Aviation | 22.5 | 128.7 | 142.1 |
| 46 | Biogas for Cooking | 19.8 | 113.1 | 124.9 |
| 47 | Improved Cattle Feed | 18.8 | 107.5 | 118.7 |
| 48 | Recycled Metals | 18.4 | 104.8 | 115.8 |
| 49 | High-Efficiency Heat Pumps | 17.2 | 98.3 | 108.5 |
| 50 | Perennial Biomass Production | 17.0 | 97.3 | 107.4 |
| 51 | Seafloor Protection | 16.2 | 92.4 | 102.1 |
| 52 | Reduced Plastics | 16.0 | 91.5 | 101.0 |
| 53 | Solar Hot Water | 14.5 | 83.0 | 91.6 |
| 54 | Grassland Protection | 14.3 | 81.5 | 90.0 |
| 55 | Improved Manure Management | 14.2 | 81.3 | 89.7 |
| 56 | Nuclear Power | 13.5 | 77.1 | 85.2 |
| 57 | System of Rice Intensification | 12.4 | 70.5 | 77.9 |
| 58 | Walkable Cities | 12.1 | 68.8 | 76.0 |
| 59 | Nutrient Management | 11.8 | 67.4 | 74.4 |
| 60 | Bicycle Infrastructure | 11.6 | 66.4 | 73.3 |
| 61 | Telepresence | 11.3 | 64.2 | 70.9 |
| 62 | Biomass Power | 11.2 | 63.7 | 70.4 |
| 63 | Macroalgae Protection and Restoration | 11.1 | 63.5 | 70.1 |
| 64 | Seaweed Farming | 10.7 | 60.8 | 67.2 |
| 65 | Recycled Paper | 9.7 | 55.5 | 61.2 |
| 66 | Electric Trains | 8.1 | 46.5 | 51.3 |
| Reduced 20kg luggage | 46.0 | 46.0 | ||
| 67 | Small Hydropower | 7.0 | 40.1 | 44.3 |
| 68 | Hybrid Cars | 6.9 | 39.2 | 43.2 |
| 69 | Electric Bicycles | 5.9 | 33.8 | 37.3 |
| 70 | Biochar Production | 5.8 | 33.1 | 36.5 |
| 71 | Sustainable Intensification for Smallholders | 5.8 | 33.1 | 36.5 |
| 72 | Bioplastics | 5.7 | 32.4 | 35.7 |
| 73 | Ocean Power | 5.4 | 30.9 | 34.1 |
| 74 | High-Speed Rail | 5.4 | 30.7 | 33.8 |
| 75 | Coastal Wetland Protection | 5.1 | 29.2 | 32.2 |
| 76 | Farm Irrigation Efficiency | 4.8 | 27.5 | 30.4 |
| 77 | Composting | 4.8 | 27.5 | 30.4 |
| 78 | Improved Fisheries | 4.3 | 24.6 | 27.1 |
| 79 | Low-Flow Fixtures | 4.0 | 22.6 | 25.0 |
| 80 | Coastal Wetland Restoration | 3.2 | 18.5 | 20.4 |
| 81 | Water Distribution Efficiency | 2.6 | 14.8 | 16.4 |
| 82 | Green and Cool Roofs | 2.3 | 12.9 | 14.2 |
| 83 | Recycled Plastics | 2.2 | 12.6 | 14.0 |
| 84 | Improved Aquaculture | 2.1 | 12.2 | 13.4 |
| 85 | Dynamic Glass | 1.4 | 8.3 | 9.1 |
| 86 | Micro Wind Turbines | 0.4 | 2.2 | 2.4 |
Source: Project Drawdown, Japan Tourism Agency, International Air Transport Association (IATA), ECTA, our calculations.
Note: Calculated according to Scenario 1 of Project Drawdown.
從2022年Booking.com的調查中可以看到，全世界旅人中有81％、日本旅人中有73％認為「對自己而言實踐永續旅行是非常重要的事」。
更重要的是，如果你不攜帶任何行李，並在當地租用所需的東西，就能更輕鬆享受旅行。既不用打包行李和擔心運輸時行李有任何的遺失或損傷，回家後也不需要收拾。「輕鬆旅行」對於長者、身心障礙者、帶小孩的家長等各種行動不便的人來說，具有恢復旅行次數的效果，也有助於消除「旅行落差」的作用。 請各位考慮使用本公司的旅行租賃服務。