Establishing And Application Of The Index Assessment System Of Forest Ecological Restoration After Fire In Daxingan Mountains

This study was conducted in the fire burned area in 2003 Genhe city, the methods of data investigation, field survey, lab analyses and mathematical models were used for the establishment and preliminary application of index assessment system of forest ecological restoration, the main conclusions are as follows:1. In order to evaluate ecosystem restoration after forest fire, document screening, feasibility frequency statistics and theoretical analysis were used to establish the evaluation index system included 37 indicators. The elements layer included productivity, renewal, soil conditions, microbiological agents, habitats and biodiversity.2. First of all, the index systems after initial screening were collection of measured data and sensitivity analysis. Then we summarized the final evaluation system after the establishment of forest fire by the ecosystem composed of 23 indicators.3. The entropy method was used to empower indicators of the index system after establishment, we constitute simple linear weighted evaluation model, the results of weights showed that site conditions and soil conditions are the main factors affecting forest ecosystem restoration after fire.4. Index system and evaluation model which has been constructed were used to comprehensively evaluate the 2003 fire burned area of Genhe city, the results showed that the recovery status quo of 73.1% of the whole fire burned area was in the middle class. Also we found the recovery status quo was significantly related with forest fires and the management after fire. Forest fires were not short-term behaviors or the factors only causing damage to vegetation layer for the ecosystems, it abidingly affect the entire ecosystem restoration process. Moreover natural regeneration was more beneficial to ecological restoration of burned area in this region.