摘要
本文基于ArcGIS平台和In Vest模型探讨了上海市1990年、2000年、2010年和2020年生境质量空间格局及其演变特征。结论如下,(1)上海市1990-2020年间土地利用类型变化的总体趋势为建设用地急剧扩张、耕地资源逐渐减少。(2)宝山区、嘉定区、浦东新区以及松江区土地利用动态度较大,黄浦区、静安区等中心城区的土地利用基本无变化。(3)上海市1990-2020年生境质量呈总体下降趋势,生境质量指数由1990年的0.45降低到2020年的0.33,生境质量等级不变,为较差,主要是由建设用地扩张占用耕地造成的。(4)崇明区的生境质量最高,1990年生境质量指数达到0.52,2000-2010年有小幅下降,但近年有转好的趋势,其余区生境质量均呈明显下降的趋势。中心城区生境质量指数最低,2020年生境质量指数在0~0.045之间。通过分析土地利用变化引起的生境质量时空演变可为区域生态保护和土地资源管理提供科学依据。
This paper explores the spatial patterns and evolution characteristics of habitat quality in Shanghai in 1990,2000,2010,and 2020 based on the ArcGIS platform and the InVest model.The conclusions are as follows,(1)the overall trend of land use type changes in Shanghai from 1990 to 2020 is characterized by a rapid expansion of built-up land and a gradual decrease in arable land resources.(2)The land use dynamics are relatively high in Baoshan District,Jiading District,Pudong New Area,and Songjiang District,while the land use in central urban areas such as Huangpu District and Jing'an District has remained basically unchanged.(3)The habitat quality in Shanghai has shown an overall declining trend from 1990 to 2020,with the habitat quality index decreasing from 0.45 in 1990 to 0.33 in 2020,maintaining a poor quality level,primarily due to the occupation of arable land by the expansion of built-up land.(4)Chongming District has the highest habitat quality,with a habitat quality index of 0.52 in 1990,experiencing a slight decline from 2000 to 2010,but showing a positive trend in recent years,while the habitat quality in other districts has shown a significant declining trend.The central urban areas have the lowest habitat quality index, with values ranging from 0 to 0.045 in 2020. Analyzing the spatiotemporal evolution of habitat quality caused by land use changes can provide scientific basis for regional ecological protection and land resource management.
作者
陈桂兰
Chen Guilan(Shanghai Quguan Engineering Design Consulting Co.,Ltd,Shanghai 200041,China)
出处
《国土与自然资源研究》
2026年第1期12-17,共6页
Territory & Natural Resources Study
基金
自然资源部大都市区国土空间生态修复工程技术创新中心开放性创新项目(CXZX202301)。
关键词
土地利用变化
InVest模型
生境质量
时空演变
上海市
land use change
InVest model
habitat Quality
spatiotemporal evolution
Shanghai Municipality
