Research on habitat quality is one of the important contents of regional ecological civilization construction.Taking Northeast China as the research area, this study analyzed habitat quality change in the perspective of land use evolution based on land use data of 2005, 2010 and 2015.The results are as follows. (1) From 2005 to 2015, cultivated land and construction land increased by 0.77％and 7.51％, respectively, while forest land and grassland decreased by 0.30％and 0.25％, respectively.64.41％of the newly added cultivated land was transferred from forest land and grassland, and 85.21％of the newly added construction land was transferred from cultivated land and grassland.The degree of land type transfer in the last five years was significantly greater than that in the first five years. (2) The habitat quality was divided into 5 grades:excellent, good, medium, relatively bad, bad.The area of excellent quality habitat decreased by 0.93％, while the area of bad quality habitat increased by 1.34％.The overall quality of regional habitat was declining, and habitat quality decline in2010-2015 was greater than that in 2005-2010. (3) The correlation between the quality of habitat and the spatial distribution of land use type was significant.The main types of land use in the semi-annular belt at the edge of the area were forest land and grassland, with better habitat quality;in the central and northeastern regions, cultivated land and construction land were concentrated, and habitat quality was lower. (4) Habitat degradation was high around the city and in the vicinity of waters.Expansion of construction land and protection of waters should be paid attention to.%生境质量是区域生态文明建设的重要内容之一.以东北地区为研究区, 基于2005、2010、2015年三期的土地利用数据, 对土地利用演变视角下的生境变化进行分析.结果表明: (1) 2005-2015年, 耕地和建设用地分别增加0.77％和7.51％, 林地和草地分别减少0.30％和0.25％, 耕地有64.41％转入面积来自林地和草地, 建设用地有85.21％转入面积来自耕地和草地, 后五年的地类转移程度大于前五年; (2) 将生境质量由高到底划分为优等、良好、中等、较差和差5个等级, 优等的生境质量面积减少0.93％, 差等的生境质量面积增加1.34％, 区域生境质量总体呈下降趋势, 且2010—2015年的生境质量下降幅度大于2005—2010年的生境质量下降幅度; (3) 生境质量高低与土地利用类型空间布局的相关性明显, 研究区边缘半环状地带的主要土地利用类型是林地和草地, 生境质量较高, 中部和东北部地区耕地与建设用地集中, 生境质量较低; (4) 城市周边和水域附近的生境退化度较高, 建设用地扩张和水域保护应引起重视.
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