基于InVEST模型的土地利用变化对生态质量的影响——以2000年—2020年大连市为例

The impact of land use change on ecological quality based on InVEST model——A case study of Dalian city from 2000 to 2020

以大连市为研究区,对2000年和2020年Landsat影像目视解译获得其土地利用数据,并分析土地利用变化特征.以交通网、高程、居民点为生境威胁因子,利用InVEST模型对大连市生境变化和生境质量进行分析.结果表明:2000年—2020年,耕地、林地、草地、水体和未利用地均减少,城市用地增加;2000年—2020年生境退化和生境质量数据显示,伴随着城市的开发,大连市整体的生境质量降低。

In this paper takes Dalian city as the research area,analysis the characteristics of land use change in Dalian city by 2000 and 2020 Landsat images,uses the method of visual interpretation to make land-used data 2000 and 2020 to analysis the land-used change of the two years.This paper also takes traffic network,elevation and residential area as habitat threat factors,uses InVEST model to analyse the habitat change and habitat quality in Dalian city of the two years.The results show that:①from 2000 to 2020,cultivated land,forest land,grassland,water body and unused land decreased respectively,while urban land increased;②The data of habitat degradation and habitat quality from 2000 to 2020 show that with the development of the city,the overall habitat quality of Dalian city decreases,especially in some post development areas.