森林火灾的发生,在很多情况下是不可避免的,但森林火灾过后的生态状况,对于灾后生态恢复以及相关林业活动却有着重要意义,因此构建森林火灾后生态现状评价指标体系就显得尤为重要。选择根河地区森林火灾后的生态系统作为研究对象,通过对国内外各类生态系统评价指标体系的构建方式进行分析,以及对指标的文献筛选、频度统计、可行性理论分析和敏感性分析,初步构建了以森林火灾后生态恢复现状评价为目标,以生产力、更新能力、土壤条件、微生物因子、气象与立地条件和生物多样性为要素层,由23个指标构成的根河地区森林火灾后生态现状评价体系,并运用熵权法确定指标体系中各项指标的权重。这种将定性分析与定量分析相结合进行指标体系建立的方法可以达到使用最少的指标反映最大量原始信息的目的。研究思路和方法在一定程度上丰富了森林生态系统评价研究理论与方法体系。

The occurrence of forest fires is unavoidable in many cases,but the understanding of ecological status after forest fires is of great significance for post-disaster ecological restoration and related forestry activities.Therefore,it is very important to construct an ecological status evaluation index system of forest fire.After analyzing the construction methods of the evaluation index system of ecosystems at home and abroad,this paper has chosen the forest ecosystem disturbedby forest fire disturbance as the research object.Through the index selection,frequency statistics,feasibility analysis and sensitivity,the evaluation of ecological status of forest ecosystems after forest fires was preliminarily established,which was constructed by productivity,regeneration capacity,soil conditions,microbial factors,site conditions and biodiversity,and 23 indicators of post-forest fire ecosystem assessment system.We use the entropy method to determine the indicators of the weight of the indicators.This method,which combines qualitative analysis with quantitative analysis,can achieve the goal of using the least indexes to reflect the maximum amount of original information.The application of this research idea and method should enrich the theory and method system of forest ecosystem evaluation research to a certain extent.