地表基质类型 | 面积(km2) | 百分比 |
岩浆岩 | 3957.52 | 27.73% |
沉积岩 | 953.08 | 6.68% |
变质岩 | 16.12 | 0.11% |
巨砾 | 0.31 | 0.00% |
粗砾 | 4.64 | 0.03% |
中砾 | 33 | 0.23% |
细砾 | 0.14 | 0.00% |
粗骨土 | 27.91 | 0.20% |
砂土 | 806.19 | 5.65% |
壤土 | 3137.69 | 21.99% |
黏土 | 0.01 | 0.00% |
淤泥 | 5333.85 | 37.38% |