摘要
利用2000、2005、2010、2015、2020年5期30 m分辨率的土地利用数据,按照“三生”空间用地主导功能构建了南京市土地利用分类体系;采用土地利用转移矩阵、生境质量、土地利用转型的生境贡献率等,定量分析了快速城市化背景下南京市土地利用转型的时空变化特征及生境质量在土地利用过程中对结构和功能转型变化所带来的影响。结果表明:(1)2000—2020年,南京市“三生”空间格局变化明显,城镇生活用地从中心往外围大幅扩张,并侵占了大量农业生产用地;数量变化表现为生产空间持续缩减,生活空间持续扩张,生态空间波动式上升;(2)2000—2020年南京市“三生”空间土地利用转型类型主要是农业生产用地、林草生态用地和水域生态用地转为城镇生活用地、农村生活用地、林草生态用地和水域生态用地,农村生活用地、林草生态用地和水域生态用地转为农业生产用地;(3)南京市生境质量退化主要源于农业生产用地转为城镇生活和农村生活用地,2000—2005年生境贡献率占比高达90.64%;(4)南京市生境质量的提升得益于农村生活用地向农业生产用地和水域生态用地转变。
Based on the 30 meter resolution land use data in five periods of 2000,2005,2010,2015 and 2020,according to the dominant function of land use of production-living-ecological space,the land use classification system in Nanjing was established.By the methods of land use transfer matrix,habitat quality,and habitat contribution rate of land use transformation,the temporal and spatial characteristics of land use transformation in Nanjing under the background of rapid urbanization and its impact on habitat quality were quantitatively analyzed.The results showed that:(1)From 2000 to 2020,the pattern of production-living-ecological space in Nanjing changed significantly.Urban living space expanded significantly from the center to the outside,and occupied a large amount of agricultural production space.The quantity change showed that the production space continued to shrink,the living space continued to expand,and the ecological space fluctuated.(2)From 2000 to 2020,the types of land use transformation of production-living-ecological space in Nanjing were mainly agricultural production land,forest grass and water ecological land converted to urban and rural living land,forest grass and water ecological land,rural living land,forest grass and water ecological land converted to agricultural production land.(3)The degradation of habitat quality in Nanjing was mainly caused by the conversion of agricultural production land to urban and rural living land,and the contribution rate of habitat was up to 90.64%.(4)The improvement of the habitat quality in Nanjing benefited from the transformation of rural living land to agricultural production land and water ecological land.
作者
康琴
潘文仁
李禕
KANG Qin;PAN Wen-ren;LI Yi(School of Public Administration,Hohai University,Nanjing 210000,China)
出处
《江西农业学报》
CAS
2022年第11期128-137,共10页
Acta Agriculturae Jiangxi
关键词
“三生”空间
土地利用转型
生境质量
贡献率
Production-living-ecological space
Land use transformation
Habitat quality
Contribution rate
