It is the purpose of this zoning district to discourage intensive development in areas which present severe limitations to development because of such factors as steep slope, shallow depth to bedrock and stoniness, which are generally classified as having severe limitations for on-site sewage disposal and are not proposed to be sewered, and which are not served by a road network. It is also the intent of this district to encourage the preservation of ecologically critical factors such as the headwaters of streams and the surrounding watersheds, wetlands, wildlife habitats and extensive wooded areas. The wooded areas have even increased importance because they are located on steep slopes and in the watersheds surrounding the headwaters of streams. By preserving these factors, wildlife populations within the Township can be maintained, stream quality can be protected, the adverse effects of increased stormwater runoff, erosion and sedimentation can be minimized, and the recreation potential of the area maintained.