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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (11): 140-146.doi: 10.11924/j.issn.1000-6850.casb17030108

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Remote Sensing Monitoring of Paddy Field Expansion in Fuyuan During 1990-2013

周皓月,刁利明 and 郑树峰   

  • Received:2017-03-17 Revised:2018-03-17 Accepted:2017-06-12 Online:2018-04-16 Published:2018-04-16

Abstract: To reveal the expansion pattern of paddy field in Fuyuan from 1990 to 2013, the expansion characteristics of paddy field and driving factors were analyzed by dynamic degree method, superposition analysis method and landscape centroid shift method. The information of paddy field in Fuyuan of 1990 and 2013 was extracted from the TM/OLI Landsat remote sensing image by a classification method based on the combination of object- oriented and artificial visual interpretation. The effects of both climatic factors and economic data were considered in the analysis. The results showed that the method based on the combination of object-oriented and artificial visual interpretation could accurately complete the extraction of paddy field information in Fuyuan, and the overall accuracy was above 85% . The area of paddy field in Fuyuan was 3193.81 km2 in 2013, which increased by 2977.67 km2 compared with that in 1990. The dynamic degree of land use was 7.17% , and the change rate was 129.46% . During the 24 years, wetland was dramatically transformed into paddy field, the area of wetland changed into paddy field was 1739.75 km2, which accounted for 58.15% of the total increase of paddy field. Spatially, the expansion of paddy field in Fuyuan showed a trend of northward and eastward expansion. The driven factors of paddy field expansion in Fuyuan from 1990 to 2013 were not only the accumulated temperature, precipitation and other natural factors, but also the increase of population, economic development, technology progress, policy adjustment and other human factors. This paper studied the expansion of paddy field in Fuyuan by remote sensing and provided the direction for the future development of agriculture in this region.