摘要
为评价湖北省主要针叶用材林林分质量,以2019年森林资源二类调查数据为基础,选取3项准则12个指标,采用主成分分析方法构建林分质量评价体系.结果表明,影响林分的重要因素是林分生产力和林分稳定性,指标层中相对重要的影响因子是胸径指数、树高指数、蓄积指数、土壤类型、土壤厚度、龄组、郁闭度、适生区、植被总盖度和群落结构10项指标;小班林分质量得分为0.134 4～0.757 4,差等、中等和优等小班面积占比分别达5.21％、80.43％和14.36％.湖北省主要针叶用材林林分质量以中等为主,提升空间较大.
Abstract
In order to evaluate the quality of major coniferous timber forests in Hubei Province,based on the 2019 forest resource planning and design survey data,3 criteria and 12 indicators were selected,and the principal component analysis method was used to construct a forest quality evaluation index system.The results showed that the important influencing factors were stand productivity and stand stability.The relatively important influencing factors in the indicator layer were 10 indicators:diameter at breast height index,tree height index,volume index,soil type,soil thickness,age group,canopy closure,suitable habitat area,total vegetation coverage and community structure;The quality score of the small class forest stand was 0.134 4～0.757 4,and the proportion of poor,medium,and excellent small class areas was 5.21％,80.43％,and 14.36％,respectively.The quality of the main coniferous timber forest stands in Hubei Province was mainly moderate,with significant room for improvement.
维普
万方数据