Acta Geographica Sinica ›› 2019, Vol. 74 ›› Issue (5): 1025-1039.doi: 10.11821/dlxb201905014
• Land Use and Ecosystem Services • Previous Articles Next Articles
WANG Zhengxiong,JIANG Yongjun(),ZHANG Yuanzhu,DUAN Shihui,LIU Jiuchan,ZENG Ze,ZENG Sibo
Received:
2018-08-13
Revised:
2019-02-18
Online:
2019-05-25
Published:
2019-05-24
Contact:
JIANG Yongjun
E-mail:jiangjyj@swu.edu.cn
Supported by:
WANG Zhengxiong,JIANG Yongjun,ZHANG Yuanzhu,DUAN Shihui,LIU Jiuchan,ZENG Ze,ZENG Sibo. Spatial distribution and driving factors of karst rocky desertification based on GIS and geodetectors[J].Acta Geographica Sinica, 2019, 74(5): 1025-1039.
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Tab. 1
Distribution of rocky desertification in different types of lithology in karst trough area
岩性类型 (面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠 (km2) | 石漠化总面积(km2) | 发生率 (%) |
---|---|---|---|---|---|
连续性灰岩(39995.2) | 4722.9(39.7%) | 4771(55.4%) | 412.9(50.8%) | 9906.8 | 24.8 |
连续性白云岩(19153.2) | 1383.3(11.6%) | 986.5(11.4%) | 228.5(28.1%) | 2598.3 | 16.1 |
灰岩与白云岩互层(23568.7) | 1860.8(15.6%) | 1250.5(14.5%) | 82.1(10.1%) | 3193.4 | 12.0 |
碳酸盐岩夹碎屑岩(49402.8) | 3927.8(33.1%) | 1607.8(18.7%) | 89.6(11.0%) | 5625.2 | 11.4 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 21323.7 | 16.1 |
Tab. 2
Distribution of rocky desertification in different grades in karst trough area
坡度(°) (面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠 (km2) | 石漠化总面积 (km2) | 发生率 (%) |
---|---|---|---|---|---|
0~8(21096.1) | 1048.5(8.8%) | 765.1(8.9%) | 47.8(5.9%) | 1861.4 | 8.8 |
8~15(36956.2) | 3520.4(29.6%) | 2584.2(30.0%) | 230.9(28.4%) | 6335.5 | 17.1 |
15~25(44495.3) | 5780(48.6%) | 3899.9(45.2%) | 495(60.9%) | 10174.9 | 22.9 |
> 25(29572.3) | 1545.9(13.0%) | 1366.6(15.9%) | 39.4(4.8%) | 2951.9 | 10.0 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 21323.7 | 16.1 |
Tab. 3
Spatial distribution of rocky desertification in different slopes in karst trough area
海拔(m) (面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠 (km2) | 石漠化总面积 (km2) | 发生率 (%) |
---|---|---|---|---|---|
0~400(51526.7) | 2048.6(17.2%) | 865.1(10.0%) | 47.8(5.9%) | 2961.5 | 5.7 |
400~800(27745.2) | 5299.6(44.6%) | 3922.9(45.5%) | 563.8(63.3%) | 9786.3 | 35.3 |
800~1200(35672.4) | 3520.5(29.6%) | 2642.2(30.7%) | 165.6(20.4%) | 7586.0 | 21.3 |
> 1200(17175.6) | 1026.1(8.6%) | 1185.6(13.8%) | 35.9(4.4%) | 2247.6 | 13.1 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 21323.7 | 16.1 |
Tab. 4
Distribution of rocky desertification under different rainfall in karst trough area
降雨量(mm)(面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 石漠化总面积 (km2) | 发生率 (%) |
---|---|---|---|---|---|
800~1000(31708.4) | 1605.8(13.5%) | 1852.4(21.5%) | 158.6(19.5%) | 3616.8 | 11.4 |
1000~1200(47564.1) | 2533.6(21.3%) | 3325.6(38.6%) | 289.5(35.6%) | 6148.7 | 12.9 |
1200~1400(32011.4) | 5780.9(48.6%) | 2007.5(23.3%) | 221.9(27.3%) | 8010.3 | 25.0 |
> 1400(20835.9) | 1974.5(16.6%) | 1430.2(16.6%) | 143.1(17.6%) | 3547.8 | 17.0 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 21323.7 | 16.1 |
Tab. 5
Distribution of rocky desertification under different land use patterns in karst trough area
土地利用方式 (面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 石漠化总面积 km2 | 发生率 (%) |
---|---|---|---|---|---|
耕地(28515.8) | 5900.4(49.6%) | 4795.6(55.7%) | 164.2(20.1%) | 10165.6 | 38.1 |
林地(61669.1) | 1881(15.8%) | 683.3(7.9%) | 469.6(57.8%) | 2728.5 | 1.9 |
草地(29009.1) | 2080.2(17.5%) | 996.7(11.6%) | 85.3(10.5%) | 3162.2 | 4.9 |
未利用地(12925.9) | 2033.2(17.1%) | 2140.2(24.8%) | 94.1(11.6%) | 5267.4 | 33.0 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 22141.7 | 16.8 |
Tab. 6
Distribution of rocky desertification under different population densities in karst trough area
人口密度(人/km2) (面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 石漠化 总面积 | 发生率 (%) |
---|---|---|---|---|---|
0~100(36993.6) | 2789.3(23.5%) | 2869.2(33.3%) | 141.5(17.4%) | 5800.1 | 15.7 |
100~200(38314.8) | 5654.8(47.5%) | 3868.4(44.9%) | 341.3(42.0%) | 9864.5 | 25.7 |
200~300(39636.0) | 1905.4(16.0%) | 1758.1(20.4%) | 102.8(12.6%) | 3766.3 | 9.5 |
> 300(17175.6) | 1545.3(13.0%) | 120.0(1.4%) | 227.5(28.0%) | 1892.8 | 11.0 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 21323.7 | 16.1 |
Tab. 7
Distribution of rocky desertification under different total output value of primary industry in karst trough area
第一产业总值(亿元) (面积/km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 石漠化 总面积 | 发生率 (%) |
---|---|---|---|---|---|
0~10(47260.2) | 2080.2(17.5%) | 996.7(11.6%) | 84.3(10.3%) | 3161.2 | 6.7 |
10~25(45223.8) | 2921.6(24.6%) | 1683.3(19.5%) | 269.6(33.2%) | 4874.5 | 10.8 |
25~50(20294.3) | 3033.2(25.5%) | 2288.6(26.6%) | 95(11.7%) | 5416.8 | 24.7 |
> 50(19341.6) | 3859.8(32.4%) | 3647.2(42.3%) | 364.2(44.8%) | 7871.2 | 28.0 |
总计(132119.9) | 11894.8(100%) | 8615.8(100%) | 813.1(100%) | 20323.7 | 16.10 |
Tab. 1
0 Distribution of rocky desertification in different types of land use and lithology in karst trough area
岩性 | 土地利用 (km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 总计 (km2) | 石漠化 发生率(%) |
---|---|---|---|---|---|---|
连续性灰岩 | 耕地(12024.1) | 1216.3(16.4%) | 1629.2(13.5%) | 196.9(1.6%) | 3042.4 | 31.6 |
林地(10288.7) | 23.1(0.2%) | 5.9(0.1%) | 0.1(0%) | 29 | 0.3 | |
草地(12232.1) | 1977.8(9.9%) | 960.5(7.9%) | 39.0(0.3%) | 2977.2 | 18.1 | |
未利用地(5450.4) | 1121.3(20.6%) | 258.9(4.8%) | 16.6(0.3%) | 1396.8 | 25.6 | |
小计 | 39995.2 | 4338.4(36.5%) | 2854.4(33.1%) | 252.6(31.1%) | 7445.4 | 15.7 |
连续性 白云岩 | 耕地(4133.9) | 1548.3(37.5%) | 960.5(23.2%) | 98.5(2.4%) | 2607.3 | 17.0 |
林地(8940.1) | 75.5(0.6%) | 5.8(0.1%) | 1.7(0.2%) | 83 | 0.3 | |
草地(4205.3) | 441.8(10.5%) | 213.0(5.1%) | 29.0(3.6%) | 683.7 | 4.4 | |
未利用地(1873.9) | 870.1(7.3%) | 750.4(8.7%) | 59.4(7.3%) | 1679.9 | 24.2 | |
小计 | 19153.2 | 2935.8(15.3%) | 1929.7(10.1%) | 188.5(1.0%) | 5054 | 10.7 |
灰岩与白云岩互层 | 耕地(5086.9) | 1396.7(11.7%) | 1015.9(11.8) | 120.3(14.8%) | 2533 | 18.1 |
林地(11001.1) | 0.8(0%) | 5.1(0.1%) | 1.9(0.2%) | 7.8 | 0.0 | |
草地(5174.9) | 524.2(4.4%) | 203.8(2.4%) | 13.4(1.6%) | 741.4 | 5.8 | |
未利用地(2305.9) | 757.7(6.4%) | 338.5(3.4%) | 84.7(10.4%) | 1181 | 20.7 | |
小计 | 23568.7 | 2679.4(22.5%) | 1563.3(18.1%) | 220.4(27.1%) | 4463.1 | 9.3 |
碳酸盐岩夹碎屑岩 | 耕地(10662.8) | 1054.9(9.9%) | 923.3(8.7%) | 82.9(0.8%) | 2061.2 | 19.3 |
林地(23059.5) | 18.1(0.2%) | 12.1(0.1%) | 0.0(0%) | 30.2 | 0.1 | |
草地(10847.2) | 397.9(3.3%) | 419.5(4.9%) | 28.4(3.5%) | 845.8 | 6.1 | |
未利用地(4833.3) | 470.3(9.7%) | 913.5(18.9%) | 40.2(0.8%) | 1424 | 22.9 | |
小计 | 49402.8 | 1941.2(3.9%) | 2268.4(4.6%) | 151.6(0.3%) | 4361.2 | 8.8 |
Tab. 1
1 Distribution of rocky desertification in different types of land use and slope in karst trough area
坡度 | 土地利用 (km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 总计 (km2) | 石漠化 发生率(%) |
---|---|---|---|---|---|---|
0~8° | 耕地(4591.7) | 334.1(7.3%) | 82.5(1.8%) | 17.0(2.1%) | 758.3 | 9.4 |
林地(9602.7) | 151.6(1.6%) | 156.5(1.8%) | 4.9(0.6%) | 547.7 | 0.3 | |
草地(4666.3) | 167.9(2.2%) | 101.1(1.2%) | 7.2(0.9%) | 583.1 | 5.9 | |
未利用地(2235.3) | 265.4(2.2%) | 175.1(2.0%) | 39.8(1.3%) | 789.4 | 17.6 | |
小计 | 21096.1 | 919.1(7.7%) | 515.2(6.0%) | 100.7(12.4%) | 2678.5 | 7.0 |
8°~15o | 耕地(7752.5) | 580.5(7.5%) | 327.1(4.2%) | 38.4(0.5%) | 1653.5 | 12.2 |
林地(18670.2) | 212.6(1.1%) | 181.3(1%) | 16.6(0.1%) | 717.1 | 1.9 | |
草地(7914.9) | 539.6(4.7%) | 342.3(4.0%) | 72.0(8.9%) | 1663.5 | 10.5 | |
未利用地(2618.5) | 411.3(3.5%) | 219.4(2.5%) | 26.2(3.2%) | 1148.3 | 21.8 | |
小计 | 36956.2 | 1744.0(14.7%) | 1070.2(12.4%) | 153.3(18.9) | 5182.4 | 7.0 |
15°~25o | 耕地(10786.7) | 981.2(9.1%) | 667.3(6.2%) | 31.0(0.3%) | 2938.9 | 15.6 |
林地(17952.9) | 411.5(3.5%) | 556.8(6.5%) | 19.1(2.3%) | 1726.4 | 4.1 | |
草地(10976.8) | 496.5(4.2%) | 294.7(3.4%) | 15.4(1.9%) | 1411.5 | 7.2 | |
未利用地(4778.9) | 564.5(4.7%) | 581.0(6.7%) | 59.7(7.3%) | 2104.1 | 24.7 | |
小计 | 44495.3 | 2453.8(20.6%) | 2099.8(24.4%) | 125.1(15.4%) | 8180.9 | 9.2 |
坡度 | 土地利用 (km2) | 轻度石漠化 (km2) | 中度石漠化 (km2) | 重度石漠化 (km2) | 总计 (km2) | 石漠化 发生率(%) |
> 25° | 耕地(1525.0) | 679.7(6.1%) | 430.0(5.2%) | 30.5(0.2%) | 1994.3 | 15.5 |
林地(17185.3) | 307.0(1.8%) | 209.4(1.2%) | 10.2(0.1%) | 921.4 | 3.1 | |
草地(6154.0) | 424.6(3.6%) | 299.8(3.5%) | 20.9(2.6%) | 1303.2 | 10.0 | |
未利用地(3707.3) | 249.9(2.1%) | 306.3(3.6%) | 54.2(6.7%) | 1062.9 | 17.9 | |
小计 | 28571.6 | 1661.2(14.0%) | 1245.5(9.5%) | 115.8(14.2%) | 5281.9 | 8.9 |
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