Abstract:

In order to explore the impact of human activities on the habitats within the ecological conservation redline, improve the supervision ability of the ecological conservation redline and provide scientific support for improving the supervisory system of the ecological edprotection red line. Taking Zhenlai County of Jilin Province as an example, the high-resolution remote sensing images and related human activity data were used to assess the habitat risk of the area of ecological conservation redline form grid scale based on InVEST model and the spatial analysis capability of GIS. The results showed that: The total habitat risk value in the study area ranges from 0.00 to 1.32. High, medium and low habitat risk areas respectively accounted for 2.31%, 3.26% and 22.12% of the ecological conservation redline area. The impact of human activities disturbance on the habitat in the entire assessment area was dominated by low habitat risk. Among various habitats, the average habitat risk value of forest land was the highest, among which the average habitat risk values of arbor forest land, shrub forest land and other forest land were 0.58, 0.88 and 0.79 respectively, and the highest habitat risk value (shrub forest land) also appeared in the forest land habitat. Compared with other human activities, the cumulative habitat risk values and average habitat risk values of urban village and industrial and mining land were the highest, which were 2 933 161.90 and 1.24 respectively, followed by highway land, which were 1 086 264.68 and 1.19 respectively. Human activities such as dryland, paddy field and fishery had limited impacts on the habitat.

Key words: supervision of the ecological conservation redline, InVEST model, habitat risk, grid scale, Zhenlai County, Jilin Province