LANDAU AN DER ISAR, GERMANY - NOVEMBER 09:  Upside view to the crown of  a common spruce, seen in a forest on November 8, 2011 near Landau an der Isar, Germany. The German government is conducting a nationwide project to estimate the number, variety and geographic distribution of trees and forests in Germany, as well as their condition and health. Approximately a third of Germany is covered in woodlands, and though that territory has actually expanded since 1989, some analysts fear demand for wood will outstrip supply in coming years due to national growth in industry and bio-energy needs.  (Photo by Johannes Simon/Getty Images)