Analysis Of Langxiang Forestry Bureau Forest Resource Dynamic

Based on the 1995,2002 and 2012,lang township forestry bureau forest manager three times review data as the foundation,through the sum of the data,sorting,classification,refinement,combined with the use of Excel software,FoxPro etc,since the implementation of natural forest protection project of data analysis,confirmed that since the implementation of natural forest protection project,lang township forestry bureau forest area,increase year by year,forest tree species,quantity,quality into a virtuous cycle.The results of this study show that:(1)Langxiang Forestry Bureau forest area increased from 1995 to 2012-222081hm 254159hm-,32078hm-growth,the growth rate of 14.44%.Woodland area decreased sharply from 1995 to 2012-5190hm-71hm-5119hm,which reduced the growth rate of-98.63%.(2)The forest cover rate increased from 83.9%in 1995,after the first phase of the natural forest protection project,the forest cover rate increased to 96.02%,an increase of 12.12%.Changes in forest cover rate tomorrow.After the implementation of the project,a large area of afforestation and close the forest area increased,forests,woodland,wasteland,non forest area decreased.(3)From the age structure,forest decline in the proportion of young forest,middle age forest increased the proportion of near mature forest,mature forest growth trend.(4)From the tree structure,in 1995 the implementation of natural forest protection,forest accounted for more than 90%;in 2002 the initial implementation of the natural forest protection project,forest accounted for more than 60%;in 2012 after a period of operation manager,broad-leaved forest accounted for about 70%.(5)From the forest category,there is no effective forest classification in 1995 because of the different methods of investigation.2002-the ecological public welfare forest area is 173385hm,accounting for 65.5%of the global area,commercial forest area accounted for 34.5%-75715hm,the global area;ecological public area is 184181hm-2012,accounting for 69.58%of global area,commercial forest area-72007hm,accounted for 27.2%of the area of global.