黑龙江省中部阔叶混交林林分自然度评价

Evaluation of Stand Naturalness of Broad Leaved Mixed Forest in the Middle Part of Heilongjiang Province

针对黑龙江省中部阔叶混交林,从树种组成、结构特征、树种多样性、活力、干扰程度等5个方面选择14个指标,利用熵权修正层次分析法,对黑龙江省中部阔叶混交林林分自然度进行评价。结果表明:林分自然度等级为4~5,其中:2号、9号、12号样地为乡土树种混交状态;11号、13号和19号样地为次生林状态。

According to the broad-leaved mixed forest in the middle part of Heilongjiang Province,14 indexes were selected from five aspects of tree species composition,structure characteristics,tree species diversity,vigor and disturbance degree,and the entropy weight modified analytic hierarchy process(AHP)was used to evaluate the stand naturalness of broad-leaved mixed forest in the middle of Heilongjiang Province.Result shows that the stand naturalness grade is 4-5;among them,plot 2,plot 9 and plot 12 are mixed with native tree species;plot 11,plot 13 and plot 19 are secondary forest.