Theoretical framework of mine ecological restoration index and its application in FengshanPark of Jiaozuo City

Objective Mine ecological restoration is an important measure to achieve a good ecological environment, but whether the structure and function of the ecosystem are repaired needs to be scientifically evaluated. Method Based on the review of relevant literature, the connotation and theoretical framework of ecological restoration index were put forward, and its composition system and evaluation criteria were discussed. Results ( 1 ) The mine ecological restoration index covers five dimensions : vegetation community, underground habitat, landscape characteristics, local microclimate and human perception. It has both subjective and objective evaluation, highlighting the particularity of mine restoration and the unified scientific quantification of human-land coordination goals. ( 2 ) The composition system of mine ecological restoration index is composed of plant community characteristic index, underground habitat characteristic index, local microclimate characteristic index, landscape ecological index and human perception characteristic index.( 3 ) According to the calculation results of TOPSIS method, the comprehensive evaluation value of ecological restoration of Jianshan Park is 0.605916, which belongs to grade II ( good ecological restoration index ), indicating that the overall effect of the restoration project is good, but there is still some room for improvement, which is consistent with the actual situation. Conclusions The ecological restoration index can intuitively and clearly quantify the effect of ecological restoration projects, which is scientific and operable, and provides a new idea for the evaluation of the effect of mine ecological restoration.