A density management diagram for Scots pine ( Pinus sylvestris L.): A tool for assessing the forest's protective effect

摘要: Density management diagrams (DMD) are graphical tools used in the design of silvicultural regimes even-aged forests. They depict relationship between stand density, average tree size, yield and dominant height, based upon relevant ecological allometric relationships such as self-thinning rule, yield-density effect, site index curves. DMD effectively summarize structural descriptors, therefore helpful determining characteristics needed to achieve a range goals. We constructed for Scots pine (Pinus sylvestris L.) forests western Italian Alps. 210 sample plots from region-wide forest inventory determine maximum density line volume top height isolines. Site curves were assess time taken by stands progress along their development trajectories. The protection provided is most effective against rockfall, due frequent occurrence active source or transition areas. identify combinations size representing optimal sub-optimal rockfall. An actual was case study illustrate how diagram can be current functionality forest, forecast its likely compare alternative strategies. # 2008 Elsevier B.V. All rights reserved.