Agricultural Permanence in Large Asian Cities: A Pilot Study of Nanjing, China

Authors: Gregory Veeck*, Western Michigan University, Charles Emerson, Western Michigan University, Erik Steven Breidinger, Western Michigan University
Topics: Agricultural Geography, China, Urban Geography
Keywords: China, urban agriculture, GIS, remote sensing
Session Type: Paper
Day: 4/10/2018
Start / End Time: 4:40 PM / 6:20 PM
Room: Mid-City, Sheraton, 8th Floor
Presentation File: No File Uploaded

Nanjing, the capital of prosperous Jiangsu Province, has grown rapidly during the post-reform era (1979-present) and generally this growth has been better planned than that in most Chinese cities. Still, the pace of change –greatly accelerated after 2000, has put tremendous pressure on the expanding city’s land resources. This case study of land use/land cover change in Nanjing with a focus on agricultural land in Jiangning County provides an excellent opportunity to test an important component of the Ginsburg-McGee desakota hypothesis that predicts that Asian extended metropolis regions, unlike similar large cities in Western nations, will consistently maintain agricultural land and labor supplies within metropolitan boundaries over time. This presentation will focus on the fast-developing jiedao of Jiangning County for the period from 2000 to 2016. The study is based on time-series land cover/land use (LC/LU) analyses of a project-developed GIS database joining vector-format annual agricultural and demographic data from the Jiangning Statistical Yearbooks to additional raster LU/LC data layers derived from satellite imagery including Landsat 8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS), Landsat 7 Enhanced Thematic Mapper + (ETM+), Landsats 4 and 5 Thematic Mapper (TM), and Landsats 1-5 Multi-Spectral Scanner (MSS) imagery. Preliminary results show Jiangning continues to retain a high proportion of agricultural land, but that jiedao in closest proximity to Nanjing’s urban districts lost arable land at greater rates than those in the periphery. Further, grain production has stagnated while vegetable, peach, and tea production have increased significantly during the study period.

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