(注)前橋営林局の資料による。
| 年度 | 山腹工 | 渓間工 | 保安林整備 | その他 | 計 | ||
|---|---|---|---|---|---|---|---|
| 数量 (面積) | 経費 | 数量 (コンクリート体積） | 経費 | 経費 | 経費 | ||
| 昭和〜 平成 | ha | 百万円 | ｍ3(基数) | 百万円 | 百万円 | 百万円 | 百万円 |
| Ｓ22〜30 | 19.8 | 30 | 1,070.40(8) | 3 | 0 | 0 | 33 |
| Ｓ31 | 4.5 | 16 | 408.0(3) | 2 | 0 | 2 | 20 |
| Ｓ32 | 23.6 | 27 | 0 | 0 | 0 | 2 | 29 |
| Ｓ33 | 38 | 30 | 0 | 0 | 1 | 3 | 34 |
| Ｓ34 | 33.3 | 27 | 67.5(1) | 0 | 1 | 3 | 31 |
| Ｓ35 | 28.5 | 39 | 268.0(1) | 1 | 2 | 5 | 47 |
| Ｓ36 | 12.6 | 69 | 577.9(2) | 4 | 2 | 4 | 79 |
| Ｓ37 | 13.2 | 61 | 1,195.1(4) | 13 | 4 | 8 | 86 |
| Ｓ38 | 37.6 | 70 | 3,350.7(7) | 29 | 4 | 0 | 103 |
| Ｓ39 | 36.1 | 75 | 2,456.7(6) | 17 | 3 | 23 | 118 |
| Ｓ40 | 26.90(9.90) | 66 | 982.0(3) | 9 | 8 | 46 | 129 |
| Ｓ41 | 18.20(5.00) | 67 | 1,824.0(3) | 19 | 13 | 35 | 134 |
| Ｓ42 | 15.39(9.00) | 55 | 2,619.0(4) | 25 | 14 | 10 | 104 |
| Ｓ43 | 14.34(8.00) | 51 | 1,143.0(5) | 14 | 10 | 22 | 97 |
| Ｓ44 | 17.59(14.37) | 53 | 1,661.0(5) | 22 | 4 | 32 | 111 |
| Ｓ45 | 20.82(12.02) | 51 | 3,300.0(6) | 46 | 5 | 33 | 135 |
| Ｓ46 | 20.43(10.35) | 67 | 2,728.0(6),10.1t | 44 | 7 | 16 | 134 |
| Ｓ47 | 21.35(9.50) | 83 | 1,105.0(2) | 18 | 2 | 36 | 139 |
| Ｓ48 | 31.30(14.30) | 110 | 1,434.0(5) | 27 | 1 | 22 | 160 |
| Ｓ49 | 13.45(7.61) | 73 | 1,794.0(4) | 41 | 3 | 11 | 128 |
| Ｓ50 | 11.30(5.11) | 79 | 2,045.0(3) | 52 | 4 | 46 | 181 |
| Ｓ51 | 12.53(3.85) | 106 | 145.0(1) | 4 | 4 | 6 | 120 |
| Ｓ52 | 15.53(7.62) | 156 | 3,101.0(4) | 70 | 5 | 9 | 240 |
| Ｓ53 | 12.76(10.00) | 241 | 1,529.0(3) | 39 | 5 | 25 | 310 |
| Ｓ54 | 21.50(15.30) | 200 | 2,099.0(3) | 71 | 7 | 12 | 290 |
| Ｓ55 | 20.26(15.00) | 214 | 1,490.0(3) | 51 | 4 | 4 | 273 |
| Ｓ56 | 26.23(20.00) | 225 | 870.0(1) | 30 | 21 | 5 | 281 |
| Ｓ57 | 27.97(20.00) | 192 | 789.6(1.5),7.15t | 34 | 19 | 35 | 280 |
| Ｓ58 | 23.20(19.29) | 200 | 1,541.7(11.5) | 55 | 20 | 11 | 286 |
| Ｓ59 | 24.63(19.75) | 216 | 0 | 0 | 13 | 6 | 235 |
| Ｓ60 | 22.14(14.73) | 214 | 810.0(2.5) | 31 | 21 | 16 | 282 |
| Ｓ61 | 21.23(14.99) | 212 | 719.5(0.5) | 23 | 24 | 9 | 268 |
| Ｓ62 | 15.91(9.32) | 242 | 0 | 0 | 24 | 5 | 271 |
| Ｓ63 | 16.78(10.75) | 233 | 735.0(2.0) | 24 | 36 | 11 | 294 |
| Ｈ1 | 16.19(9.35) | 238 | 0 | 0 | 39 | 5 | 282 |
| Ｈ2 | 13.88(10.81) | 189 | 467.4(1.0) | 18 | 24 | 37 | 268 |
| Ｈ3 | 15.38(12.35) | 124 | 761.41(3),13.75t | 43 | 24 | 70 | 261 |
| Ｈ4 | 14.7(13.50) | 152 | 1,203(5),14.5t | 72 | 15 | 79 | 318 |
| Ｈ5 | 23.4(23.0) | 232 | 1,161(2) | 64 | 17 | 101 | 414 |
| Ｈ6 | 13.2(11.3) | 164 | 855(1) | 40 | 12 | 74 | 290 |
| 累計 | 816.05(366.07) | 4,939 | 48,256.9(121),45.5t | 1,055 | 422 | 879 | 7,295 |
| 緑化率 | 49% |
|---|---|
| 既施工地 | 816ha |
| 要施工地 | 854ha |
| 計 | 1,670ha |
戻る