地表火对宝天曼栎类森林生态系统服务功能的影响研究

摘要

2008年4月至2010年6月采用时间序列代替空间序列的方法,对宝天曼栎类森林生态系统服务功能受地表火影响在不同时间的涵养水源、保育土壤、固碳释氧、生物保育、积累营养物质、负离子提供和森林病虫害防治等7个方面进行了初步评估.结果表明,地表火干扰造成宝天曼栎类森林生态系统服务功能损失的价值在时间序列上依次为1年是24.95万元·hm-2,5年是11.68万元·hm-2,10年是4.91万元·hm-2,15年是0.68万元·hm-2;各项服务功能价值量损失排序为保育土壤＞涵养水源＞病虫害防治＞固碳释氧＞积累营养物质＞净化大气＞生物保育,其中保育土壤和涵养水源两项的损失占总损失量的70％左右,这表明地表火主要影响宝天曼栎类森林生态系统中的保育土壤和涵养水源功能.%We evaluated the role of oak in ecosystem services by way of replacing space series to time series to study that of it in water and soil reservation, carbon fixation and oxygen release, biological breeding, nutrient accumulation , anion provision and pest and disease management after fire. We concluded that the losses from fire were 249 500 RMB/hm2 in one year, 116 800 RMB/hm2 in five years, 49 100 RMB/hm2 in ten years, and 6 800 RMB/hm2 in fifteen years; And its rank was soil reservation > water reservation > damages from pest and disease > carbon fixation > nutrient accumulation > air cleansing > biological breeding. Among them, the losses from soil and water reservation occupied 70 % of all. This conclusion demonstrated that fire played major role in affecting ecological services with soil and water reservation in Baotianman Areas.