FOREST RESOURCES WANAGEMENT ›› 2018, Vol. 0 ›› Issue (1): 141-147.doi: 10.13466/j.cnki.lyzygl.2018.01.020
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HUO Zhenjiang()
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Abstract:
The establishment of the archives of forest resources is an important part of forest resource management.The archives of forest resources must be updated and perfected in time to reflect the dynamic changes of forest resources,to analyze the change in increase or decrease of forest resources and to carry out the forest management more scientifically.The update of the sub-compartment archives is the basis of the renewal of the forest resource archives.Its accuracy determines the reliability of the updating of the forest resource archives.But the number of sub-compartments in a forestry bureau is large,the composition of tree species is complex.If it is calculated on the basis of the growth rate,the workload of the archives updating and calculation is big,the difference in the canopy density and age of each sub-compartment could not be considered and the accuracy of calculation is not guaranteed.To this end,this paper takes the Daxinganling forest in Inner Mongolia as an example,The application of three variable density dynamic growth model controlled by density,age and status index in the update of small class resource archives is discussed.The result shows that the established forest dynamic growth model system can meet the needs of the dynamic update interval of different stand volume,basal area,number of trees per hectare,the average DBH and average tree height survey factors.The results can provide a reliable basis for the update of sub-compartment data.
Key words: sub-compartment, archive update, variable density, stand, growth model
CLC Number:
S75
HUO Zhenjiang. Research on the Update of Sub-compartment Resources Archives Based on the Dynamic Growth Model of Forest Stands[J]. FOREST RESOURCES WANAGEMENT, 2018, 0(1): 141-147.
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URL: http://www.lyzygl.com.cn/EN/10.13466/j.cnki.lyzygl.2018.01.020
http://www.lyzygl.com.cn/EN/Y2018/V0/I1/141
Tab.1
Site class parameters of forest types
Tab.2
Growth rate table of scattered wood in young and middle age forests%
Tab.3
Parameter table of storage renewal model of various forest types
Tab.4
Growth rate table of tree species in sparse woodland
Tab.5
Growth rate of various tree species in other scattered trees
Tab.6
The fitting parameter table of the average DBH growth model of each forest types
Tab.7
List of fitting parameters for the average height growth model of the stands
Tab.8
5 year growth statistics of the canopy density
Tab.9
Table for the model test of the forest accumulation and growth
Tab.10
Table for the test of the growth model of the broken area of the stand
Tab.11
Forest hectare growth model test table
Tab.12
Table for the height growth model of the stand trees
Tab.13
Table for the growth model of stand average DBH growth