2016-2024年湖北省生态质量时空变化特征及影响因素分析OA

This study conducted a dynamic assessment of ecological quality in Hubei Province from 2016 to 2024,based on the indicator system outlined in the Ministry of Ecology and Environment's Trial Measures for the Evaluation of Regional Ecological Quality.Through empirical analysis,the applicability of this framework at the provincial scale was evaluated.By integrating geodetector analysis and variance decomposition,key driving factors underlying the evolution of ecological quality over the past eight years were systematically identified.The results are shown as follow.1)The overall ecological quality of Hubei Province is classified as excellent(Class Ⅰ),with 91.97％ of the land area meeting or exceeding Class Ⅱ standards.Spatially,ecological quality exhibits a distinct pattern characterized by high-quality four major ecological barrier zones,moderate conditions in the Jianghan Plain,and relatively lower levels in urban core areas-demonstrating the method's strong suitability for provincial-scale applications.2)Spatial differentiation of the Ecological Quality Index(EQI)is primarily governed by the ecological pattern and ecological function dimensions,with the land development disturbance index,ecological land area ratio,and habitat quality index emerging as the dominant third-level indicators.3)Temporally,EQI has exhibited an overall fluctuating upward trend,driven largely by improvements in ecological function and biodiversity indicators.Notably,the vegetation coverage index and soil and water conservation index are the most influential third-level metrics shaping interannual variations in EQI.4)Declines in EQI are mainly attributable to the deterioration of certain indicators within the ecological stress and ecological pattern categories,whereas improvements are primarily linked to gains in ecological livability and biodiversity-related indicators.Furthermore,climatic factors-particularly precipitation-play a dominant role in modulating ecological function indicators,which in turn drive interannual fluctuations in vegetation coverage and soil and water conservation at the county level.