Two wonderful sources for denominational statements:
Earth Ministry
Greenfaith
All creation is the Lord’s, and we are responsible for the ways in which we use and abuse it." | United Methodist Church, General Board of Church and Society, Social Principles Doctrine, The Natural World, 2008
Love of God, love of neighbor and Scripture’s stewardship demands provide enough reason for Southern Baptists and Christians everywhere to respond to these problems with moral passion and concrete action." | Southern Baptist Environment and Climate Initiative, signed by hundreds of individuals, 2011
The environment must be seen as God’s gift to all people, and the use we make of it entails a shared responsibility for all humanity, especially the poor and future generations." | Pope Benedict XVI, speech for the World Day of Peace titled "To Cultivate Peace, Protect Creation", 2010