The study of cultivated land warning in Huangpu District, Guangzhou based on GIS and ANN-CA

ZHANG Sen, CHEN Jian-fei

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Journal of Guangzhou University(Natural Science Edition) ›› 2014, Vol. 13 ›› Issue (6) : 73-80.

The study of cultivated land warning in Huangpu District, Guangzhou based on GIS and ANN-CA

  • ZHANG Sen, CHEN Jian-fei*
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Abstract

①Cultivated land warning can be executed in specific location with geographical simulation and GIS. Taking Huangpu District, Guangzhou as an example, the variation trend of land use from 1995 to 2009 was analyzed and it is proved that urban land expansion is the most important reason of the cultivated land disappearance in this area. ②The urban land spatial distribution pattern of 2020 was predicted in slow-expansion mode by using the ANN-CA model in GeoSOS. ③Taking advantage of the spatial analysis in ArcGIS, cultivated land warning area was extracted by overlapping the urban land predicted map and cultivated land current map. The warning gross area was 931.86 hm2 accounting for 37.88% of total cultivated land of 2009. It is concluded that there was a sharp contradiction between cultivated and urban land. A warning area is for agricultural production but it is suitable for urban development as well. According to the location and area of these warning areas, departments can adopt compensatory measures to reconcile the contradiction, manage cultivated land in multifunction, expand urban land reasonably and promote sustainable development in this area.

Key words

cultivated land warning / ANN-CA / GIS / Huangpu District, Guangzhou

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ZHANG Sen, CHEN Jian-fei. The study of cultivated land warning in Huangpu District, Guangzhou based on GIS and ANN-CA. Journal of Guangzhou University(Natural Science Edition). 2014, 13(6): 73-80

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