Evaluation of Habitat Quality in Lanzhou Region Based on InVEST Model

Properly handling the relationship between land use patterns and habitat quality in arid and semi-arid ecologically fragile cities is of vital importance to the formulation of sustainable development strategies. Based on the land use data in 2000 and 2015 of Lanzhou, the InVEST model is used to measure its habitat quality and scarcity, and the land transfer matrix is used to analyze the spatial agglomeration and distribution of habitat quality. The results show that the value of habitat degradation has gradually changed from the low value in a wide range at the center to a scattered high value at the boundary. And the highest value at the boundary decreased significantly from 151 to 132. The overall habitat quality is poor but not much change. The spatial distribution of habitat quality is related to the urban pattern under the “Fourth Edition of the General Regulations”, it tends to increase in agglomeration because the distribution of habitat types are “High-High” and “Low-Low”. and the colder and hotter spots transform to the coldest and hottest spots. The overall quality of the habitat is stable. The scarce habitat types are mainly concentrated in the grassland. So the Lanzhou region must coordinate social and ecological construction.