飞行(flying)和驾驶：哪个对环境更有利？(driving: which is better for the environment?)的区别
驾驶相对省油的汽车（每加仑25-30英里）通常比坐飞机产生更少的温室气体排放。在评估从费城到波士顿（约300英里）的旅行对全球变暖的影响时，环境新闻网站Grist.org计算出，开车会产生约104公斤的二氧化碳（CO2），这是一种典型中型汽车的主要温室气体（无论乘客人数如何）而乘坐商用飞机飞行时，每位乘客将产生约184公斤的二氧化碳。
拼车产生的温室气体最少
虽然从温室气体排放的角度来看，即使独自开车也会更好，但拼车最有环保意义。共乘一辆汽车的四个人总共只能排放104千克二氧化碳，而坐在飞机上四个座位上的这四个人将产生大约736千克二氧化碳。
各国的计算结果形成了鲜明的对比
Salon.com的记者Pablo Päster将比较进一步扩展到了一次跨国旅行，并得出了类似的结论。这些数字的差异可归因于对燃料使用和源方程的假设略有不同。例如，从旧金山飞到波士顿，每个乘客都会产生大约1300公斤的温室气体，而每辆车只行驶930公斤。同样，尽管单独驾驶的碳足迹比坐飞机低，但与一人或多人共享驾驶会相应降低每个人的碳足迹。
长途航空旅行是经济的
仅仅因为开车可能比坐飞机更环保并不意味着它总是最有意义的。开车穿越美国要比从一个海岸直飞到另一个海岸花费更多的燃料。这还不包括一路上花在餐馆和酒店的时间。那些对计算驾驶燃油成本感兴趣的人可以咨询美国汽车协会（American Automobile Association）漂亮的在线燃油成本计算器，在那里你可以输入你的出发城市和目的地，以及汽车的年份、品牌和型号，以准确估计在A点和B点之间“加油”的成本。
碳补偿可以平衡与旅行相关的排放
一旦你做出驾驶或飞行的决定，考虑购买可再生能源开发的碳抵消，以平衡你正在产生的排放量。TerraPass是一家公司，它可以很容易地根据你开车和飞行的多少来计算你的碳足迹，然后将相应地卖给你。通过碳补偿产生的资金用于替代能源和其他项目，如风电场，这些项目最终将减少或消除温室气体排放。TerraPass还将计算您的家庭能耗。
公共交通胜过汽车和航空旅行
当然，个人乘坐公共汽车（最终拼车）或火车的排放量会显著降低。Päster补充说，一次越野火车旅行将产生大约一半的汽车温室气体排放。绿色出行的唯一方式可能是骑自行车或步行，但这趟旅行已经足够长了。
弗雷德里克·博德瑞编辑
EarthTalk是E/The Environmental杂志的一个常规专题。经E。
- 发表于 2021-09-18 16:29
- 阅读 ( 226 )
- 分类：公共
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