4.2.4 Changes in Land Use in Poyang Lake.
The Transfer matrix calculated the
transfer amount of different land features from 1980 to 2020, clearly
showing the changes in different regions. It found that changes in land
features mainly occurred after 2000. The amount of land surface
conversion in the early stage was unapparent. After 2000, the most
apparent land use change was the swap of ground objects, Cropland and
Water’s area slightly increased, and the area of Forest and Grassland’s
slightly decreased, the most apparent net change of area is the
Settlement area expanded by 1.53% (Table 1).
The comparison of the image shows that the urban area expanded
significantly after 2000 (Fig 10). the transfer matrix analysis verified
an apparent conversion relationship between Settlement and Cropland. In
addition, there is also a conversion relationship between Water and
Other, and the conversion relationship is substantial. (Table2). In Fig
10, compared with 1980, around the Ganjiang river estuary, the Other
land replaced the Water area, and mainly Cropland was overrun by
Settlement in 2020. Also, the dramatic increase in Settlement and
Cropland in the basin area means water utilization increased.