Researches In The Close-to-nature Evaluation And Management Strategy For Plantation In Shunchang County

Close-to-nature forest management is one of means about sustainable forest management by imitating and closing to nature,which makes sure the versatility and sustainability of forest.The evaluation about the degree of close-to-nature is an objective way to evaluate the man-made forest.Combining the conclusion could explore more scientific and effective ways about man-made forest management and support the theoretical basis.By taking man-made forest in Shunchang County as research objects,the essay took the forest resource inventory data for management with 1996 and 2006,and chose some notable factors about the degree of close-to-nature as the evaluation criterion to build a system about the evaluation criterion of the degree of close-to-nature of the man-made forest in Shunchang County,then,estimated the degree of close-to-nature there by combining the conclusion of forest resource inventory data for management.The main results are as follows:(1)Based on the forest resource inventory data for management,chose 11 criterions according to the community structure,the community vitality,and interferon to estimate the degree of man-made forest.The criterions include the forest canopy density,diversity of species,types of forest,tree species structure,stand age composition,soil fertility,volume per acre,degree of disease,degree of insect attack,ratio of harvesting and man-made area of fire disaster.(2)Using the Analytic Hierarchy Process and the Delphi Method to determine the weight value of the constructed system,using the Equidistant Method to divide the man-made forest evaluation rating of the degree of close-to-nature,the selected 11 indicators are classified into qualitative and quantitative indicators,and each indicator is quantified.Finally,combining the constructed evaluation model to determine the degree of close-to-nature in Shunchang County.(3)The results of the plantation evaluation about the degree of close-to-nature in Shunchang County showed the degree was 0.656 in 1996,and the degree was 0.591 in 2006,the two years degree belonged to far-natural communities.From the community structure point of view,the degree of close-to-nature forest about man-made forest were 0.444 and 0.436,which belonged to far-off nature state.From the community vitality point of view,in 1996,the degree was 0.534,which belonged to the state of far-off nature,and the degree was 0.605,and belonged to semi-natural state.From the degree of interference point of view,the degree were 0.962 and 0.971 in 1996 and 2006,which belonged to the state of close-to-nature forest.(4)According to the evaluation results,combined with the current situation of the plantation in Shunchang County,the paper puts forward some suggestions on the technical measures of the natural plantation in Shunchang County,and provides the theoretical basis for the sustainable management of the plantation in Shunchang County.