【摘要】 为揭示关中汉唐帝陵区土地利用生态系统健康状况,以2005年、2010年和2020年的遥感影像数据为主,统计年鉴数据和现有相关研究结果为辅,基于GIS技术,分析研究区土地利用覆被及其生态服务价值变化,并构建"压力—状态—响应"模型,对研究区生态系统健康进行评价。研究结果显示:(1)研究区2005年、2010年、2020年土地利用深度一直在提高,景观多样性呈现"上升—下降"趋势,景观优势度呈现出"下降—上升"趋势,斑块越来越不规则,景观破碎度指数呈现破碎化趋势。(2)2005年研究区生态系统健康评价综合值为0.415 4,生态系统健康状况较差,压力、状态、响应对综合值的贡献率分别为:20.27%、72.97%、6.76%;2010年的生态系统健康评价综合值为0.584 6,生态系统健康状况一般,压力、状态、响应对综合值的贡献率分别为:13.56%、66.34%、20.10%;2020年的生态系统健康评价综合值为0.506,生态系统健康状况一般,压力、状态、响应对综合值的贡献率分别为:0%、76.26%、23.74%。(3)从时间变化来看,关中汉唐帝陵区的生态系统健康评价综合值呈现出"上升—下降"的变化趋势。研究结果可为关中汉唐帝陵区实现经济发展与生态环境的协调可持续发展提供理论指导。更多还原

【Abstract】 To reveal the ecosystem health of land use in the mausoleum areas of Emperors in the Han and Tang Dynasties of Guanzhong,taking the remote sensing image data in 2005,2010 and 2020 as the main materials,the statistical yearbook data and existing relevant research results as the supplementary materials and the GIS technology as the main mean,this paper analyzed the changes of land use and land cover and its ecological service value,and constructed the"Pressure-State-Response"model to evaluate the ecosystem health of the study area.The results were showed that:(1) In 2005,2010 and 2020,the depth of land use had been increasing,while the landscape diversity had shown a"rising-to-declining" trend,and the landscape dominance had shown a"declining-to-rising"trend. Landscape patches became more and more irregular,showing a trend of fragmentation;(2) In 2005,the comprehensive value of ecosystem health assessment in the study area was 0.415 4,indicating that its ecosystem health was poor. The contribution rates of pressure,state and response to the comprehensive value were 20.27%,72.97%,and 6.76%,respectively.In 2010,the comprehensive value was 0.584 6,indicating that its ecosystem health was normal. The contribution rates of pressure,state and response to the comprehensive value were 13.56%,66.34% and 20.10%,respectively. In 2020,the comprehensive value was 0.506,indicating that its ecosystem health was normal.The contribution rates of pressure,state and response to the comprehensive value were 0%,76.26% and 23.74%,respectively.(3) From the perspective of time change,the comprehensive value of ecosystem health assessment in the mausoleum areas of Emperors in the Han and Tang Dynasties of Guanzhong showed a trend of"rising-to-declining".The results could provide theoretical guidance for the coordinated and sustainable development of economy and ecological environment in the mausoleum areas of Emperors in the Han and Tang Dynasties of Guanzhong.更多还原