2000-2017年河龙区间输沙量锐减归因分析
|
|
高海东,刘晗,贾莲莲,庞国伟,王杰
|
Attribution analysis of precipitous decrease of sediment loads in the Hekou-Longmen section of Yellow River since 2000
|
|
GAO Haidong,LIU Han,JIA Lianlian,PANG Guowei,WANG Jie
|
|
表2 2000-2015年河龙区间坡面土壤侵蚀量变化
|
Tab. 2 Change of soil erosion on the slope in the HL section in 2000-2015
|
|
| 年份 | 植被影响下的坡面年土壤侵蚀量(亿t) | 梯田比(%) | 梯田减沙贡献率(%) | 植被和梯田共同作用下的坡面年土壤侵蚀量(亿t) | | 2000 | 3.97 | 6.92 | 14.02 | 3.42 | | 2001 | 5.83 | 6.42 | 11.96 | 5.13 | | 2002 | 5.82 | 6.61 | 12.74 | 5.08 | | 2003 | 5.38 | 6.80 | 13.51 | 4.65 | | 2004 | 3.92 | 7.25 | 15.42 | 3.32 | | 2005 | 3.39 | 7.94 | 18.52 | 2.76 | | 2006 | 3.80 | 8.05 | 18.98 | 3.08 | | 2007 | 4.06 | 7.43 | 16.22 | 3.40 | | 2008 | 3.13 | 8.13 | 19.38 | 2.53 | | 2009 | 3.69 | 8.31 | 20.22 | 2.94 | | 2010 | 3.17 | 8.32 | 20.27 | 2.52 | | 2011 | 3.09 | 9.02 | 23.54 | 2.36 | | 2012 | 3.59 | 8.13 | 19.39 | 2.90 | | 2013 | 4.09 | 8.16 | 19.50 | 3.29 | | 2014 | 2.61 | 9.78 | 27.21 | 1.90 | | 2015 | 2.90 | 9.53 | 25.99 | 2.15 |
|
|
|