Effects of land use change on habitat based on InVEST model in Northeast China
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.
land use changehabitat qualityInVEST modelNortheast China
国家科技期刊平台
NSTL
万方数据
维普
