摘要
祁连山国家公园是西北地区重要的水源涵养区和生态安全屏障,科学全面地评价其生态环境状况对于资源可持续利用和维持生态平衡具有重要意义。为此,用遥感和地理信息数据,基于生态环境状况指数(Eco-environment Index,EI)分析了祁连山国家公园体制试点前(2013年)、体制试点全面开始(2018年)、体制试点后(2023年)生态环境状况的时空变化,并利用地理探测器(GeoDetector)定量分析了自然因子对国家公园生态环境状况的驱动力。结果表明,(1)2013年、2018年、2023年EI值分别为:47.54、47.92、49.69,呈波动上升状态,空间上呈现“东高西低”的格局,评价结果保持在“一般”等级,试点后(2018-2023年)生态环境状况呈现“略微变好”特征。(2)驱动因子分析表明NDVI(q=0.767)和海拔(q=0.755)单因子驱动力最显著,海拔和坡度(q=0.994)、海拔和NDVI(q=0.988)呈现双因子增强作用,解释力强于单因子解释力。结论为祁连山国家公园生态环境状况评价和保护提供重要参考依据。
Qilian Mountain National Park is the main water conservation area and ecological security barrier in Northwest China,and it is of great significance to scientifically and comprehensively evaluate its ecological environment for the sustainable use of resources and the maintenance of ecological balance.To this end,remote sensing and geographic information data were used to analyze the temporal and spatial changes of the ecological environment of the Park system before(2013),beginning of the system(2018),and after the system(2023).Based on the Eco-environment Index(EI),and the driving force of natural factors on the ecological environment of the park was quantitatively analyzed by using GeoDetector.The results showed that,(1)the EI values for 2013,2018 and 2023 are 47.54,47.92 and 49.69 respectively,showing a fluctuating and rising state,with a spatial pattern of“high in the east and low in the west”,and the evaluation results remain at the“general”level.After the program(2018-2023),the ecological environmental showed a“slight improvement”.(2)The driving factor analysis shows that the NDVI(q=0.767)and altitude(q=0.755)the most significant single factor driving forces,and the altitude and slope(q=0.994),altitude and NDVI(q=0.988) show dual factor enhancement,and the explanatory power is stronger than the single factor explanatory power.The conclusion provides an important reference basis for the evaluation and protection of the ecological in the Qilian Mountain National Park.
作者
沈国蓉
李晓兵
齐鹏
Shen Guorong;Li Xiaobing;Qi Peng(Resource and Environmental Faculty,Gansu Agricultural University,Lanzhou Gansu 730070;Commissioner’s Office in Xi’an of National Forestry and Grass Administration,Xi’an Shaanxi 710001;State Key Laboratory of Arid Habitat Crop Science of Gansu Province,Lanzhou Gansu 730070;Gansu Provincial Engineering Research Center for Livestock and Poultry Waste Resource Utilization,Lanzhou Gansu 730070,China)
出处
《国土与自然资源研究》
2026年第2期65-70,共6页
Territory & Natural Resources Study
基金
黄河流域甘肃段典型脆弱区生态环境保护与水安全保障关键技术研究与示范(23ZDFA009)。
关键词
祁连山国家公园
生态环境状况
地理探测器
驱动力分析
Qilian Mountain National Park
ecological environment assessment
GeoDetector
driving force analysis
