Effect of Check Dam on Sediment Load Under Vegetation Restoration in the Hekou-Longmen Region of the Yellow River
Effect of Check Dam on Sediment Load Under Vegetation Restoration in the Hekou-Longmen Region of the Yellow River
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黄河河口龙门地区植被恢复条件下淤积坝对泥沙负荷的影响
DOI：
10.3389/fenvs.2021.823604
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发表时间：
2022-01
影响因子：
4.6
通讯作者：
Yang Zhao
中科院分区：
文献类型：
--
作者：
Zeyu Zhang;Junrui Chai;Zhanbin Li;Li Chen;Kunxia Yu;Zhi Yang;Xia Zhang;Yang Zhao
随着黄土高原植被恢复和淤地坝建设的开展，黄河中游地区的输沙量急剧减少，但淤地坝对植被恢复带来的输沙量减少的影响尚不清楚。为了进一步明确植被恢复条件下淤地坝的减沙作用，基于多源遥感数据计算了植被覆盖度和淤地坝指数，并通过Mann-Kendall统计检验和双累积曲线计算了人类活动减沙率。然后利用不同地貌区不同植被覆盖度的资料，建立了淤地坝指数与减沙率的回归方程。结果表明：河口-龙门地区及其17条支流的输沙量逐年显著减少，输沙量变化可分为3个典型时段：基准期（P1）、淤地坝建设的主要影响期（P2）和淤地坝建设与植被恢复的综合影响期（P3）。与P1期支流输沙量相比，P2期输沙量减少60.96%，P3期输沙量减少91.76%。与P2期人类活动对输沙量减少的贡献相比，P3期人类活动对输沙量减少的贡献显著增加，而降水对输沙量减少的贡献略有降低。淤地坝的减沙作用在植被覆盖度低的流域比在植被覆盖度高的流域更大。不同地貌区植被恢复的减沙效果存在差异，单独植被恢复的减沙效果存在一定的上限。如流经风沙区的河流植被恢复减沙率上限为47.86%。因此，只有将淤地坝建设与植被恢复相结合，才能取得更显著的减沙效益，更有效地控制水土流失。
With years of vegetation restoration and check dam construction on the Loess Plateau, the sediment load of the middle reaches of the Yellow River have decreased sharply; however, the effects of check dam on this decrease of sediment load with such extensive vegetation restoration remains unclear. In order to further clarify the effects of check dam on sediment load reduction under vegetation restoration, we calculated vegetation coverage and check dam index based on multi-source remote sensing data, and calculated sediment reduction rate caused by human activities by Mann-Kendall statistical test and double cumulative curve, then established regression equations incorporating the check dam index and the sediment reduction rate using data from different geomorphic regions with different vegetation coverages. The results showed that sediment load in the Hekou-Longmen region and its 17 tributaries decreased significantly every year, and the change in sediment load could be divided into 3 typical periods: the base period (P1), the period mainly impacted by check dam construction (P2) and the period with comprehensive impact of check dam construction and vegetation restoration (P3). Compared with sediment load of the tributaries during P1, the sediment load decreased by 60.96% during P2 and by 91.76% during P3. Compared with the contribution of human activities to the reduction in sediment load in P2, the contribution of human activities in P3 increased significantly, while that of precipitation decreased slightly. The sediment reduction effect of check dams is greater in basins with low vegetation coverage than in basins with high vegetation coverage. There are differences in sediment reduction effect of vegetation restorations in different geomorphic regions, and the effect of vegetation restoration alone have certain upper limits. Such as, the upper limit of sediment reduction rate of vegetation restoration for rivers flowing through the sandstorm region is 47.86%. Hence, only combined the construction of check dam with vegetation restoration can it achieve more significant sediment reduction benefit and control soil erosion more effectively.
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DOI：
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发表时间：
2011
期刊：
--
影响因子：
--
作者：
Denise Petrucci;I. Gigante;G. Vinícius;L. Vasconcelos;G. Velásquez;Meléndez
通讯作者：
Denise Petrucci;I. Gigante;G. Vinícius;L. Vasconcelos;G. Velásquez;Meléndez
通过模型模拟评估中国黄土高原淤地坝的水文效应
影响因子：
6.3
作者：
Xu, Y. D.;Fu, B. J.;He, C. S.
通讯作者：
He, C. S.
DOI：
10.1111/j.1468-0459.2006.00293.x
发表时间：
2006-10
期刊：
Geografiska Annaler: Series A, Physical Geography
影响因子：
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作者：
S. Beguerı́a;J. López‐Moreno;A. Gómez‐Villar;Virginia Rubio;N. Lana-Renault;J. García‐Ruiz
通讯作者：
S. Beguerı́a;J. López‐Moreno;A. Gómez‐Villar;Virginia Rubio;N. Lana-Renault;J. García‐Ruiz
影响因子：
1.7
作者：
Xingmin Mu;Xiu-min Zhang;H. Shao;P. Gao;Fei Wang;Ju-ying Jiao;Jingliang Zhu
通讯作者：
Xingmin Mu;Xiu-min Zhang;H. Shao;P. Gao;Fei Wang;Ju-ying Jiao;Jingliang Zhu
DOI：
10.1016/j.scitotenv.2019.04.189
发表时间：
2019-08
期刊：
The Science of the total environment
影响因子：
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作者：
S. Galicia;J. Navarro‐Hevia;A. Martínez-Rodríguez;J. Mongil-Manso;J. Santibáñez
通讯作者：
S. Galicia;J. Navarro‐Hevia;A. Martínez-Rodríguez;J. Mongil-Manso;J. Santibáñez