Reduced sediment transport in the Chinese Loess Plateau due to climate change and human activities

被引：71
作者：
Yang, Xiaonan [1 ]
Sun, Wenyi [1 ,2 ]
Li, Pengfei [3 ]
Mu, Xingmin [1 ,2 ]
Gao, Peng [1 ,2 ]
Zhao, Guangju [1 ,2 ]
机构：
[1] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
[2] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
[3] Xian Univ Sci & Technol, Coll Geomat, Xian, Shaanxi, Peoples R China
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2018年 / 642卷
基金：
中国国家自然科学基金;
关键词：
Sediment discharge; Climate change; Terrace construction; Vegetation coverage; Loess Plateau; YELLOW-RIVER BASIN; LAND-USE CHANGES; SOIL-EROSION; CHECK-DAMS; TEMPORAL VARIATION; DRIVING FORCES; MIDDLE REACHES; WATER EROSION; CATCHMENT; IMPACTS;
D O I：
10.1016/j.scitotenv.2018.06.061
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The sediment load on the Chinese Loess Plateau has sharply decreased in recent years. However, the contribution of terrace construction and vegetation restoration projects to sediment discharge reduction remains uncertain. In this paper, eight catchments located in the Loess Plateau were chosen to explore the effects of different driving factors on sediment discharge changes during the period from the 1960s to 2012. Attribution approaches were applied to evaluate the effects of climate, terrace, and vegetation coverage changes on sediment discharge. The results showed that the annual sediment discharge decreased significantly in all catchments ranging from -0.007 to -0.039 Gt.yr(-1). Sediment discharge in most tributaries has shown abrupt changes since 1996, and the total sediment discharge was reduced by 60.1% during 1997-2012. We determined that increasing vegetation coverage was the primary factor driving the reductions in sediment loads since 1996 and accounted for 47.7% of the total reduction. Climate variability and terrace construction accounted for 9.1% and 18.6% of sediment discharge reductions, respectively. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：591 / 600
页数：10
相关论文
共 56 条
[21]  
Ma H. B., 2015, YELLOW RIVER, V02, P89, DOI [10.3969/j.issn.1000-1379.2015.02.024, DOI 10.3969/J.ISSN.1000-1379.2015.02.024]
[22]   Soil Conservation Through Sediment Trapping: A Review [J].
Mekonnen, Mulatie ;
Keesstra, Saskia D. ;
Stroosnijder, Leo ;
Baartman, Jantiene E. M. ;
Maroulis, Jerry .
LAND DEGRADATION & DEVELOPMENT, 2015, 26 (06) :544-556
[23]   Dynamic Changes of Sediment Discharge and the Influencing Factors in the Yellow River, China, for the Recent 90 Years [J].
Mu, Xingmin ;
Zhang, Xiuqin ;
Shao, Hongbo ;
Gao, Peng ;
Wang, Fei ;
Jiao, Juying ;
Zhu, Jingliang .
CLEAN-SOIL AIR WATER, 2012, 40 (03) :303-309
[24]   Assessing nutrient losses with soil erosion under different tillage systems and their implications on water quality [J].
Munodawafa, Adelaide .
PHYSICS AND CHEMISTRY OF THE EARTH, 2007, 32 (15-18) :1135-1140
[25]  
MWR, 2008, STAND CLASS GRAD SOI, P18
[26]   Distinguishing human and climate influences on the Columbia River: Changes in mean flow and sediment transport [J].
Naik, Pradeep K. ;
Jay, David A. .
JOURNAL OF HYDROLOGY, 2011, 404 (3-4) :259-277
[27]   Impacts of land use and cover type on runoff and soil erosion in a marginal area of Portugal [J].
Nunes, Adelia N. ;
de Almeida, Antonio C. ;
Coelho, Celeste O. A. .
APPLIED GEOGRAPHY, 2011, 31 (02) :687-699
[28]   Modeling the response of within-storm runoff and erosion dynamics to climate change in two Mediterranean watersheds: A multi-model, multi-scale approach to scenario design and analysis [J].
Nunes, J. P. ;
Seixas, J. ;
Keizer, J. J. .
CATENA, 2013, 102 :27-39
[29]   Temporal variation of sediment load in the Yellow River basin, China, and its impacts on the lower reaches and the river delta [J].
Peng, Jun ;
Chen, Shenliang ;
Dong, Ping .
CATENA, 2010, 83 (2-3) :135-147
[30]   Ecology of soil erosion in ecosystems [J].
Pimentel, D ;
Kounang, N .
ECOSYSTEMS, 1998, 1 (05) :416-426
123456