草业科学2012，Vol.29Issue(4)：624-628,5.
东大河林区青海云杉林健康评价
Health assessment of Picea classifolia forest in the Dongdahe forest region
摘要
Abstract
Based on field survey data during 2008,the principal component analysis,cluster analysis and model of health assessment were used to assess the health state of Picea classifolia in the Dongdahe forest region by establishing the health indicators system,which included 19 indicators belonging to five strategy layers,and they were natural environment,community characteristic,stand resilience,productivity and potentialities.This study showed that the principal indicators affecting the health state of P.classifolia forest were community type,canopy closure,shrub coverage,stand volume,soil hygroscopic water,and soil moisture content.The assessment results indicated that the 13 sample plots were divided into health,sub-health and poor health.The health sample plots were 7 and were moss P.classifolia forest,accounting for 53.82%;the sub-health included one moss P.classifolia forest and three herb P.classifolia forests and they accounted for 30.77%;and the poor health plots were 2 shrub P.classifolia forest and accounted for 15.38% of total area.关键词
森林生态系统健康/评价指标/东大河林区/青海云杉林/主成分分析/聚类分析Key words
forest ecosystem health/assessment indicators/Dongdahe forest area/Picea classifolia/principal component analysis/cluster analysis分类
农业科技引用本文复制引用
刘建泉,孙建忠..东大河林区青海云杉林健康评价[J].草业科学,2012,29(4):624-628,5.基金项目
甘肃省金昌市星火计划（2009008）项目 （）
