摘要
本研究选取了树种结构、每公顷活立木蓄积量、自然度、枯枝落叶层厚度、郁闭度、土层厚度、幼树每公顷株数、森林群落结构类型、平均树高9个评价指标,通过熵权法确定了指标权重,建立了森林健康评价体系,对山西省管涔山国有林管理局秋千沟林场各类森林进行了森林健康等级评价。结果表明,秋千沟林场的森林健康评分平均为61.38。其中,森林健康等级达到优质的林分占比为2.53%,森林健康等级达到健康的林分占比为74.07%,森林健康等级达到亚健康的林分占比为22.04%,森林健康等级为不健康的林分占比为1.36%。不同龄组的森林健康评分表现为过熟林(87.54)>成熟林(71.31)>中龄林(68.09)>幼龄林(58.07)>近熟林(54.00)。不同起源的森林健康评分表现为天然林(62.88)>人工林(57.41)。不同森林类型的森林健康评分排序为华北落叶松天然林(61.59)>云杉天然林(61.87)>云杉人工林(59.21)>华北落叶松人工林(56.54)。
In this study,9 evaluation indexes were selected,including tree species structure,volume of living standing trees per hectare,naturalness,thickness of litter layer,canopy density,soil thickness,number of saplings per hectare,forest community structure type and average tree height.The index weight was determined by entropy weight method,and the forest health evaluation system was established.The forest health level of all kinds of forests in Qiuqiangou Forest Farm in National Forest Administration Bureau of Guancen Mountain in Shanxi Province was evaluated.The results showed that the average forest health score of Qiuqiangou Forest Farm was 61.38.Among them,the proportion of forest stands with high-quality forest health level was 2.53%,the proportion of forest stands with healthy forest health level was 74.07%,the proportion of forest stands with sub-healthy forest health level was 22.04%,the proportion of forest stands with unhealthy forest health level was 1.36%.The forest health scores of different age groups were as follows over-mature forest(87.54)>mature forest(71.31)>middle-aged forest(68.09)>young forest(58.07)>near-mature forest(54.00).The forest health scores of different origins were as follows natural forest(62.88)>artificial forest(57.41).The forest health scores of different forest types were ranked as follows Larix principis-rupprechtii natural forest(61.59)>Picea asperata natural forest(61.87)>Picea asperata plantation(59.21)>Larix principis-rupprechtii plantation(56.54).
作者
张泽文
Zhang Zewen(National Forest Administration Bureau of Guancen Mountain in Shanxi Province,Ninwu 036700,China)
出处
《山西林业科技》
2025年第S1期23-26,共4页
Shanxi Forestry Science and Technology
关键词
森林健康评价
熵权法
秋千沟林场
Forest health assessment
Entropy weight methodt
Qiuqiangou Forest Farm
