This is from the local Audubon Society chapter.
GIS analysis that was performed to derive the estimates of forest acreage cleared and forest-interior acreage "lost" involved a rather painstaking process of carefully digitizing the "before and after" forest and non-forest edges within the project area using high-resolution digital aerial photos from the USDA National Agricultural Information Program (NAIP), which were taken in 2008, 2005, and 2004.
The analysis determined that more than 300 acres of forest habitat was cleared to make way for the seventy-five wind turbines and for the project's very wide and extensive road/utility-line network. The clearing of forest for this windplant and the widening of the relatively narrow openings in forest canopy along the pre-existing forest roads (resulting in linear openings through the forest that are over thirty feet in width) caused extensive fragmentation of the formerly large blocks of contiguous forest that made up this area.
The cumulative loss of ecologically significant forest-interior habitat totaled more than 2,360 acres — nearly 4 square miles! On a "per turbine" basis, the forest "loss" averaged over 4.1 acres, and the forest-interior "loss" averaged nearly 31.5 acres. The forest-interior impact is among the worst at windplants built along forested ridgetops of Appalachia — both in terms of total acres and especially for its "per turbine" loss. Read more:
http://www.jvas.org/cc_forest_impact_ar_wndplnt.htmlLots of related articles that explain more about the pitfalls that sometimes accompany the wind farms here:
http://www.jvas.org/cc.htmlAs I said, I'm not against all wind farms. The ones around here just aren't always planned or placed well.