AGE STRUCTURE AND SPATIAL PATTERN OF OLD-GROWTH KOREAN PINE FOREST IN XIAOXING'ANLING MOUNTAIN

Spatial pattern of trees,basal stem increment and height were examined in a 5.0 hamixed deciduous/Pinus koraiensis forest from October in 1984 to May in 1987.Conclusions are asfollowing:1:Analysis of the age-structure of the korean pinc forest shows that it is different fromgeneral steady-statc forest typc.The lack of sapings and individuals in small-diameter class clearlyindicates that regeneration is not continuous.Continuous regeneration depends on thinning of thecanopy to form a gap.Similar-aged korean pine seeding grow in these gaps.2.The horizontalstructure of the korean pine is a mosaic more or less even-aged groups of trees.The mosaic is aresult of korean pine by regeneration stratcgy.The aggregations of korean pine of different agesoverlaps to form a continuous population generation.As a results,the population is maintainde instesady state.

AGE STRUCTURE AND SPATIAL PATTERN OF OLD-GROWTH KOREAN PINE FOREST IN XIAOXING'ANLING MOUNTAIN

Spatial pattern of trees, basal stem increment and height were examined in a 5.0 ha mixed deciduous/ Pinus koraiensis forest from October in 1984 to May in 1987. Conclusions arc as following: 1. Analysis of the age-structure of the korcan pine forest shows that it is different from general steady-state forest type. The lack of saplings and individuals in small-diameter class clearly indicates that regeneration is not continuous. Continuous regeneration depends on thinning of the canopy to form a gap. Similar-aged korcan pine seedings grow in these gaps. 2. The horizontal structure of the korcan pine is a mosaic of more or less even-aged groups of trees. The mosaic is a result of korcan pine by regeneration strategy. The aggregations of korcan pine of different ages overlaps to form a continuous population generation. As a results, the population is maintained in steady state.