基于WaTEM/SEDEM模型的沂河流域土壤侵蚀产沙模拟
|
|
李子君, 许燕琳, 王海军, 马良, 姜爱霞
|
Modeling soil erosion and sediment yield using WaTEM/SEDEM for Yihe River Basin
|
|
LI Zijun, XU Yanlin, WANG Haijun, MA Liang, JIANG Aixia
|
|
表2 1975—2015年沂河流域土壤侵蚀/沉积面积和占比
|
Tab. 2 Area and proportion of soil erosion and sedimentary inYihe River Basin from 1975 to 2015
|
|
| 时间 | 侵蚀强度 | | 剧烈侵蚀 | | 极强烈侵蚀 | | 强烈侵蚀 | | 中度侵蚀 | | 轻度侵蚀 | | 微度侵蚀 | | 沉积 | 面积
(hm2) | 占比
(%) | 面积
(hm2) | 占比
(%) | 面积
(hm2) | 占比
(%) | 面积
(hm2) | 占比
(%) | 面积
(hm2) | 占比
(%) | 面积
(hm2) | 占比
(%) | 面积
(hm2) | 占比
(%) | | 1975 | 138972 | 13.93 | | 43203 | 4.33 | | 50875 | 5.10 | | 95844 | 9.61 | | 107406 | 10.77 | | 520927 | 52.22 | | 40288 | 4.04 | | 1980 | 127658 | 12.80 | | 42828 | 4.29 | | 49707 | 4.98 | | 95135 | 9.54 | | 114709 | 11.50 | | 527254 | 52.86 | | 40223 | 4.03 | | 1985 | 155622 | 15.60 | | 41862 | 4.20 | | 49314 | 4.94 | | 91569 | 9.18 | | 99329 | 9.96 | | 509471 | 51.07 | | 50348 | 5.05 | | 1990 | 102136 | 10.24 | | 27008 | 2.71 | | 32594 | 3.27 | | 61439 | 6.16 | | 69546 | 6.97 | | 664636 | 66.63 | | 40155 | 4.03 | | 1995 | 186589 | 18.71 | | 42502 | 4.26 | | 49095 | 4.92 | | 85236 | 8.54 | | 79479 | 7.97 | | 504997 | 50.63 | | 49617 | 4.97 | | 2000 | 167728 | 16.81 | | 41830 | 4.19 | | 49690 | 4.98 | | 88385 | 8.86 | | 87022 | 8.72 | | 513211 | 51.45 | | 49649 | 4.98 | | 2005 | 161152 | 16.16 | | 37482 | 3.76 | | 43717 | 4.38 | | 76385 | 7.66 | | 75550 | 7.57 | | 559980 | 56.14 | | 43249 | 4.34 | | 2010 | 136709 | 13.70 | | 36949 | 3.70 | | 43325 | 4.34 | | 79166 | 7.94 | | 85262 | 8.55 | | 574938 | 57.64 | | 41165 | 4.13 | | 2015 | 123618 | 12.39 | | 34170 | 3.43 | | 40302 | 4.04 | | 77541 | 7.77 | | 90988 | 9.12 | | 592591 | 59.41 | | 38305 | 3.84 | | 多年平均 | 144465 | 14.48 | | 38648 | 3.87 | | 45402 | 4.55 | | 83411 | 8.36 | | 89921 | 9.01 | | 552001 | 55.34 | | 43667 | 4.38 |
|
|
|