Fuel Distribution And Fuel Control Technology In The Low Mountain Coniferous Forest Of Ming Tombs Forest Farm

Based on the fuel distribution., propose the reasonable fuel control technology plan. Study on the9Pinus tabulaeformis forest plots and11Platycladus orientalis forest plots in the low mountain coniferous forest of the Beijing Ming Tombs Forest Farm. Investigate topography factor, stand factor, undergrowth and fuel load. Research on the correlation relationship between fuel load and topography, stand factors, analysis the flammable fuel load and it’s vertical distribution in non-fireproof time. According to the result, propose the fuel control technology plan in different stand, specific conclusions as follows:(1) Undergrowth growth mainly had correlation with the stand factor in the low mountain coniferous forest of the Beijing Ming Tombs Forest Farm. The shrub growth mainly had correlation with the crown coverage, density, average tree height, average DBH and height to live crown; The herb growth mainly had correlation with the crown coverage, density, average tree height and shrub height.(2) The surface fuel load mainly had correlation with the stand factor. Fine fuel load (including herb fuel and1hr death branch fuel) mainly had correlation with the crown coverage, average DBH and average tree height; Shrub fuel load mainly had correlation with the density, average DBH and average tree height; The surface death fuel load mainly had correlation with crown coverage.(3) According to the factor analysis and cluster analysis, divided the plots into6types and represent the whole low mountain coniferous forest of the Beijing Ming Tombs Forest Farm. Meanwhile analysis the flammable fuel load vertical distribution. The flammable fuel (including surface death fuel, shrub fuel, herb fuel, tree twig, tree needles) mainly is surface fuel,and the crown fuel and death branch fuel have a certain percentage in Pinus tabulaeform forest. The flammable fuel mainly is crown fuel, the live branch fuel have a relatively larger load and the surface fuel had a relatively smaller load in Platycladus orientalis forest.(4) Research on the6type stand for fuel control techniques. The mainly techniques is mechanical management, and appropriately to clean the surface death fuel in Pinus tabulaeformis forest. The mainly techniques is pruning and mechanical management, and appropriately to thin and plant local hardwood in Platycladus orientalis forest.It is scientific that propose the fuel control technology plan through the flammable fuel load distribution.Develop appropriate control technology for different stand type, to avoid unnecessary waste of material and labor force for blindly fuel reduction in large area, while maintaining the stability and diversity of forest ecosystems. Realize the idea about the comprehensive control and ecological control on forest fuel...