奥地利森林总面积的 2 2 % (86.2万 hm2 )被划为防护林 ,其中 1/ 3是可进行采伐利用的 ,2 / 3是不进行采伐利用的。防护林绝大部分分布在海拔 10 0 0 m以上 ,老龄林过多 ,而更新严重不足。进行采伐利用的防护林 ,林分处于稳定状态的占 63% ;不进行采伐利用的 ,林分处于稳定状态 22% of Austria’s total forest area (862,000 hm2) is classified as shelterbelt, of which one third is harvested and two thirds are not harvested. The vast majority of shelterbelts are located at altitudes of more than 100 m above sea level, with too many older ones, and the updates are seriously underdeveloped. For shelterbelt used for harvesting, 63% of the stands are in a stable state; if the forest is not harvested and used, the stands are in a stable state