The Influence of Low-Intensity Prescribed Burning on the Combustible Materials of Pinus yunnanensis Pure Forest in Central Yunnan
Set up plots in the Pinus yunnanensis pure forest in Zhaobi mountain,Xinping county,central Yunnan province for 4 consecutive years.Through field surveys,sampling and laboratory experiments,observe the fire behav-ior during the prescribed burning,about 8 months after the prescribed burning investigation of combustibles in the plot,combustibles including trees,shrubs,herbs and ferns,the results show that:(1)Planned burning resulted in a tree mortality rate of less than 10 percent;(2)Planned burning reduced the height of shrubs,herbs and ferns.the vertical continuity in the forest was reduced,while 2020 No prescribed burning was carried out in the year,the height of shrubs,herbs and ferns increased(3)Planned burning reduces fuel load.It can be seen that the planned burning can more effectively control the load of combustibles;(4)Planned burning reduces the variety of combusti-bles.the species that appear in the planned burning,but not everything that appears in the planned burning,but not planned number greater than the number of species of prescribed burning.The research results can provide a favora-ble basis for prescribed burning in Yunnan.
burning rate of fuelflamefuelprescribed burningpure forest of Pinus yunnanensisXinping country