Climatarian means choosing to eat a diet that has minimal1 impact on the climate, i.e. one that excludes food transported a long way or meat whose production gives rise to CO2 emissions2.

气候素食（climatarian）指选择一种对气候影响最小的饮食习惯，譬如，不吃那些长途运输的食物，不吃那些会增加二氧化碳排放的肉食，等等。

For example:

Climate change is not normally on people's minds when they choose what to have for lunch, but a new diet is calling for people to go 'Climatarian' for their health and for the planet.

大家选择午饭吃那些的时候一般不会考虑气候变化的问题，不过，有个新的饮食习惯正在号召大家为了自己健康和地球的将来加入气候素食。