I work with the local wine industry in Placer County. There are 17 wineries here and I don't know of one that has cut down any significant amount of trees in order to plant vineyards. Further, a popular farming practice for wine grapes is DRY farming. This means once the vines are established, there is very little watering done. We also have NID ditch-water irrigation here and we are a "right to farm county" - a long-held policy and history that is in-line with our post-Gold Rush heritage. Of course there are several sides to any argument, but folks should check their facts before making these types of claims. Placer County is foothills - rolling hills, not the High Sierras which is more forested. Housing developments rip out more trees around here than any vineyard or farm ever could!