The love for the nature and a sense of responsibility towards the God’s creation. The earth is like a vineyard in Jesus’ parable, that is a trust given by our Maker.
We owe a positive return to the planet. Christian have a bigger responsibility to care deeply for the natural world. As its not just of the sake of the environment but also as a way of serving mankind. Thus they have built lots of national parks and recreational spaces and made conservation and preservation hotshots for the biodiversity to develop.