湖南黄丰桥林场杉木速生丰产林健康评价

Health assessment of fast-growing and high-yielding Cunninghamia lanceolata plantations in Huangfengqiao Forest Farm of Hunan Province,South-central China

在科学性、整体性、代表性和可操作性原则的指导下,从二类调查等数据中选取13个评价指标,构建了杉木速生丰产林健康评价指标体系,并确定了其健康等级划分标准;评价了湖南黄丰桥林场817个杉木小班的健康状况。结果表明:该林场处于不健康、亚健康和健康状态的杉木小班数分别占总体小班数的24.7%、57.3%和18.0%;幼龄林健康状态较差,中龄林稍好,过熟林普遍处在亚健康状态下,而近成熟林和成熟林健康状况相对较好。该评价结果可为该林场展开相关的健康经营措施提供参考。

Based on the principles of scientificity,holism,representativeness,and operability,thirteen evaluation indices were selected from the second-class forest resources inventory data,and a health assessment index system of fast-growing and high-yielding Cunninghamia lanceolata plantations was constructed.In the meantime,the standard for classifying the C.lanceolata plantations health grade was ascertained,and the health status of the C.lanceolata plantations in 817 sub-compartments of Huangfengqiao Forest Farm in Hunan Province was evaluated.Among the sub-compartments,those in unhealthy,sub-healthy,and healthy occupied 24.7%,57.3%,and 18.0% of total,respectively.Young plantations had a poorer health condition,middle-aged plantations were better,over-mature plantations were generally in sub-healthy,while near-mature and matured plantations were comparatively healthy.These results could provide reference for the health management of the C.lanceolata plantations in the Farm.