Table 4 Changes of land use area in buffer zones
From: Spatial–temporal evolution and land use transition of rural settlements in mountainous counties
Land use | Cropland | Forest | Shrub | Grassland | Water | Settlement | |
|---|---|---|---|---|---|---|---|
a. Changes of land use area in 100 m buffer zones | |||||||
1985 | Area (ha) | 19331 | 18314 | 12 | 925 | 41 | 1424 |
Ration (%) | 48.27 | 45.73 | 0.03 | 2.31 | 0.10 | 3.56 | |
1990 | Area (ha) | 17588 | 19977 | 7 | 958 | 37 | 1480 |
Ration (%) | 43.92 | 49.88 | 0.02 | 2.39 | 0.09 | 3.70 | |
1995 | Area (ha) | 16420 | 20501 | 5 | 1173 | 61 | 1887 |
Ration (%) | 41.00 | 51.19 | 0.01 | 2.93 | 0.15 | 4.71 | |
2000 | Area (ha) | 15019 | 20884 | 6 | 1490 | 64 | 2584 |
Ration (%) | 37.50 | 52.15 | 0.01 | 3.72 | 0.16 | 6.45 | |
2005 | Area (ha) | 14887 | 20132 | 2 | 1785 | 96 | 3145 |
Ration (%) | 37.17 | 50.27 | 0.00 | 4.46 | 0.24 | 7.85 | |
2010 | Area (ha) | 14415 | 19292 | 1 | 2064 | 101 | 4174 |
Ration (%) | 36.00 | 48.17 | 0.00 | 5.15 | 0.25 | 10.42 | |
2015 | Area (ha) | 16311 | 16312 | 0 | 1819 | 114 | 5491 |
Ration (%) | 40.73 | 40.73 | 4.54 | 0.28 | 13.71 | 13.71 | |
2020 | Area (ha) | 16265 | 13953 | 1 | 1646 | 115 | 8067 |
Ration (%) | 40.61 | 34.84 | 0.00 | 4.11 | 0.29 | 20.14 | |
b. Changes of land use area in 250 m buffer zones | |||||||
1985 | Area (ha) | 37330 | 69976 | 25 | 1113 | 115 | 1424 |
Ration (%) | 33.94 | 63.62 | 0.02 | 1.01 | 0.10 | 1.29 | |
1990 | Area (ha) | 33025 | 74216 | 11 | 1141 | 110 | 1480 |
Ration (%) | 30.03 | 67.48 | 0.01 | 1.04 | 0.10 | 1.35 | |
1995 | Area (ha) | 31204 | 75370 | 9 | 1365 | 148 | 1887 |
Ration (%) | 28.37 | 68.53 | 0.01 | 1.24 | 0.13 | 1.72 | |
2000 | Area (ha) | 29669 | 75886 | 8 | 1683 | 153 | 2584 |
Ration (%) | 26.98 | 69.00 | 0.01 | 1.53 | 0.14 | 2.35 | |
2005 | Area (ha) | 28903 | 75716 | 3 | 2030 | 186 | 3145 |
Ration (%) | 26.28 | 68.84 | 0.00 | 1.85 | 0.17 | 2.86 | |
2010 | Area (ha) | 27880 | 75355 | 2 | 2369 | 203 | 4174 |
Ration (%) | 25.35 | 68.52 | 0.00 | 2.15 | 0.18 | 3.80 | |
2015 | Area (ha) | 33547 | 68576 | 1 | 2147 | 221 | 5491 |
Ration (%) | 30.50 | 62.35 | 0.00 | 1.95 | 0.20 | 4.99 | |
2020 | Area (ha) | 36381 | 63288 | 4 | 2021 | 222 | 8067 |
Ration (%) | 33.08 | 57.54 | 0.00 | 1.84 | 0.20 | 7.33 | |
c. Changes of land use area in 500 m buffer zones | |||||||
1985 | Area (ha) | 57332 | 200352 | 33 | 1241 | 190 | 1424 |
Ration (%) | 21.83 | 76.30 | 0.01 | 0.47 | 0.07 | 0.54 | |
1990 | Area (ha) | 49025 | 208610 | 17 | 1255 | 185 | 1480 |
Ration (%) | 18.67 | 79.45 | 0.01 | 0.48 | 0.07 | 0.56 | |
1995 | Area (ha) | 46447 | 210531 | 13 | 1460 | 234 | 1887 |
Ration (%) | 17.69 | 80.18 | 0.00 | 0.56 | 0.09 | 0.72 | |
2000 | Area (ha) | 44930 | 211019 | 19 | 1779 | 241 | 2584 |
Ration (%) | 17.11 | 80.37 | 0.01 | 0.68 | 0.09 | 0.98 | |
2005 | Area (ha) | 43239 | 211768 | 15 | 2118 | 287 | 3145 |
Ration (%) | 16.47 | 80.65 | 0.01 | 0.81 | 0.11 | 1.20 | |
2010 | Area (ha) | 42004 | 211589 | 14 | 2463 | 328 | 4174 |
Ration (%) | 16.00 | 80.58 | 0.01 | 0.94 | 0.12 | 1.59 | |
2015 | Area (ha) | 52091 | 200365 | 7 | 2270 | 348 | 5491 |
Ration (%) | 19.84 | 76.31 | 0.00 | 0.86 | 0.13 | 2.09 | |
2020 | Area (ha) | 58593 | 191399 | 10 | 2155 | 348 | 8067 |
Ration (%) | 22.32 | 72.89 | 0.00 | 0.82 | 0.13 | 3.07 | |