Most intentional communities attempt to live more lightly on the earth. Many have extensive gardens and/or open space. Some co-housing communities have watersheds and wetlands as part of their community, such as Milalgro in Tucson,AZ. What makes these different from the typical subdivision that might have such features is that communities like Milagro place a very high value on land restoration for it’s own sake as part of their community values.
http://www.milagrocohousing.org