Interspecific Relation and Adjustment Technique for Artificial Broad-leaved Korean Pine Forest
An experiment was conducted to study the dynamic changes in diameter at breast height, tree height, diameter class distribution, and interspecific relationship in birch-Korean pine, Japanese alder-Korean pine mixed forest in eastern Liaoning mountainous areas by stem analysis. Results indicated that young trees held their nutrient spaces without interspecific competition in mixed forest during the first 8 years, exhibiting relatively harmonized interspecific relations. At this stage, the auxiliary functions of the associated tree species brought into play, which obviously improved the microclimate and promoted the growth of Korean pine. During the 8th and 12th years, the interspecific competition was in the initial stage judging from the decline of increments of diameter at breast height and tree height. After the 12th year, the interspecific competition was gradually intense and reached the competition peak. The broadleaved tree grew faster than Korean pine whose growth was obviously restrained, or gradually died down and withered. Due to the variation characteristics of the interspecific relations in the mixed forest, suitable thinning measures in plantation management should be taken in time to adjust the interspecific relations of the mixed forest, so as to bring the multiple benefits of the mixed forest.
Artificial broad-leaved Korean pine forestsMixed forestsInterspecific relationsAdjustment techniques
NETL
NSTL
万方数据
维普
