不同间伐强度下杉木人工林多功能评价  

A Multi-function Evaluation of Different Thinning Intensities on Cunninghamia lanceolata Plantation

作　　者：张梦雅[1] 王新杰[1] 徐雪蕾[1] 回厚霖 赵晓洁[1] 楚雅南 Zhang Mengya Wang Xinjie Xu Xuelei Hui Houlin Zhao Xiaojie Chu Ya＇ nan(Key Laboratory of Ministry of Forest Cultivation and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, P. R. China)

机构地区：[1]省部共建森林培育与保护教育部重点实验室北京林业大学,北京100083

出　　处：《东北林业大学学报》2017年第3期29-33,共5页Journal of Northeast Forestry University

基　　金：“十二五”农村领域国家科研计划项目(2012BAD22B05)

摘　　要：杉木(Cunninghamia lanceolata)为南方地区主要造林树种,在闽西北地区杉木人工纯林中,按3个坡位(上、中、下)分别设置5种间伐强度(对照、20%、25%、33%、50%),利用层次分析法,对林分不同间伐强度的生产产出、水源涵养、保育土壤、固碳释氧、生物多样性保护和积累营养物质等功能的效益进行分析。结果表明:上坡位林地中,弱度间伐(间伐强度为20%)林地综合效益最好,达到117 096.00元/hm^2;中坡位,中度间伐(间伐强度为25%)林地多功能价值最高,为120 473.34元/hm^2;下坡位,未间伐林地则表现出最优效益,其价值为136 059.47元/hm^2。因此,对于不同坡位的林地,可选取适宜的间伐强度对林地进行经营。With Cunninghamia lanceolata in southern China, we set five thinning intensities （0%, 20%, 25%, 33%, 50%） in three slope position （bottom, middle, downslope） in the northeast Fujian. By using analysis hierarchy process （AHP） , we analyzed the different thinning intensity comprehensive value including woods output, water conservation, soil eonserva- tion, earbon fixation and oxygen release, biodiversity eonservation and aeeumulation of nutrients. In bottom slope, 20% thinning can help forest to get the highest value, 117 096.00 CNY/hm^2. In middle slope, the best one was 25% thinning forest with the value of 120 473.34 CNY/hm^2. In non-thinning forest, the best value in downslope was 136 059.47 CNY/ hm^2. For different slope, choosing the suitable thinning intensity to manage is reasonable.

关 键 词：杉木 间伐强度 坡位 整体效益 多功能效益 

分 类 号：S715.3[农业科学—林学]