| 黄土丘陵沟壑区典型流域土地利用变化对水沙关系的影响 |
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| 引用本文： | 刘淑燕,余新晓,信忠保,李庆云,李海光,雷凤燕. 黄土丘陵沟壑区典型流域土地利用变化对水沙关系的影响[J]. 地理科学进展, 2010, 29(5) |
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| 作者姓名： | 刘淑燕 余新晓 信忠保 李庆云 李海光 雷凤燕 |
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| 作者单位： | 1. 水土保持与荒漠化防治教育部重点实验室,北京林业大学水土保持学院,北京,100083
2. 内蒙古通辽市绿色食品发展中心,通辽,028000 |
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| 摘 要： | 以黄土丘陵沟壑区内相邻的2条支沟(桥子东沟和桥子西沟)为研究对象,基于遥感影像获得土地利用数据,利用水文站1986-2004年观测的次降雨-径流-泥沙过程资料,研究了小流域土地利用变化(主要以增加水土保持措施为主)对径流输沙的影响。结果表明:在黄土丘陵沟壑区,增加土地利用/土地覆被能够有效地减少小流域的径流量、产沙量;在次降雨量、降雨强度较小,土地利用变化不明显的情况下,两流域次降雨水沙关系差异不显著,在次降雨量、降雨强度较大和土地利用变化明显时,两流域次降雨水沙关系差异显著,坡耕地改梯田的农田水利建设可能是导致水沙变化的主要原因。
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| 关 键 词： | 土地利用变化 径流量 产沙量 水沙关系 黄土丘陵沟壑区 |
Effects of Land Use Change on Runoff-Sediment Relationship at Watershed in the Loess Hilly Region |
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| LIU Shuyan,YU Xinxiao,XIN Zhongbao,LI Qingyun,LI Haiguang,LEI Fengyan. Effects of Land Use Change on Runoff-Sediment Relationship at Watershed in the Loess Hilly Region[J]. Progress in Geography, 2010, 29(5) |
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| Authors: | LIU Shuyan YU Xinxiao XIN Zhongbao LI Qingyun LI Haiguang LEI Fengyan |
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| Affiliation: | LIU Shuyan1,YU Xinxiao1,XIN Zhongbao1,LI Qingyun1,LI Haiguang1,LEI Fengyan2(1.Key Laboratory of Soil , Water Conservation , Desertification Combating,Ministry of Education,School of Soil , Water Conservation,Soil , Water Conservation College,Beijing Forestry University,Beijing 100083,China,2.Green Food Development Ceter in Tongliao 028000,Inner Mongolia,China) |
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| Abstract: | Taking Qiaozidonggou and Qiaozixigou watershed as examples in the loess hilly region,using remote sensing image to obtain land use data,based on the observed rainfall,runoff and sediment data during 1986-2004,this paper analysed the effects of land use change on runoff-sediment relationship.The results showed that in the loess hilly and gully areas,increasing land use/land cover can reduce effectively the watershed runoff and sediment yield;when rainfall and rainfall intensity were smaller,land-use change w... |
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| Keywords: | land-use changes runoff sediment yield runoff-sediment relationship loess hilly region |
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