scholarly journals Effects of Embedded Gravel or Gravel Mulching in Southern Red Soil on Slope Sediment Yield and Runoff

2020 ◽  
Vol 30 (1) ◽  
pp. 401-408
Author(s):  
Hui Wang ◽  
Debao Lu ◽  
Qian Wang ◽  
Chengju Shan
Keyword(s):  
Sediment Yield ◽  
Red Soil ◽  
Slope Sediment

Effects of Sediment Yield Fluctuations on the Niche-Like Ephemeral Gully Formation in Granite Red Soil

2021 ◽  
Author(s):  
Yuhao Gao ◽  
Changxin Liu ◽  
Ziqiang Zou ◽  
Zixuan Liu ◽  
Xue Yang ◽  
...  
Keyword(s):  
Sediment Yield ◽  
Red Soil ◽  
Ephemeral Gully

Experimental Research about the Influence of Grass Coverage on Loess Slope Runoff Sediment Yield

2012 ◽  
Vol 518-523 ◽  
pp. 4504-4509
Author(s):  
Lu Zhang ◽  
Yuee Chen ◽  
Qing Wu
Keyword(s):  
Sediment Yield ◽  
Erosion Rate ◽  
Sediment Concentration ◽  
The Loess Plateau ◽  
Erosion Rates ◽  
Loess Slope ◽  
Water And Sediment ◽  
Slope Sediment ◽  
Runoff Sediment ◽  
Sediment Reduction

It was important to explore the law of water and sediment reduction of loess slope in different grass coverage for carrying out the grass construction and controlling slope erosion in the Loess Plateau. Using the tests of outside artificially runoff erosion simulation, in the condition of 5L/min of the scouring flows, we conducted a pilot study of sediment yield, erosion rates, and runoff sediment concentration in three different slope conditions of 15°, 20°, 25° and three grass coverage conditions of bare slope, 30%~40% and 70%~80%. The results showed that: the grass coverage has significantly influences on sediment yield, erosion rate and runoff sediment concentration of loess slope. Sediment yield of loess slope with grass coverage of 70 ~ 80% is less than 10% of that of bare slope. Under the same conditions of gradient and grass coverage, the sediment yield and runoff sediment concentration had a direct proportion with the scouring flow. Under the same conditions of gradient and scouring flows, the erosion rate and runoff sediment yield of loess slope are basically the same. Grass has a significant role in enhancing resistance to corrosion of soil and reducing erosion of loess slope.

scholarly journals Inhibiting Effects of Vegetation on the Characteristics of Runoff and Sediment Yield on Riparian Slope along the Lower Yellow River

2019 ◽  
Vol 11 (13) ◽  
pp. 3685 ◽  
Author(s):  
Yifan Zhang ◽  
Qinghe Zhao ◽  
Zihao Cao ◽  
Shengyan Ding
Keyword(s):  
Sediment Yield ◽  
Riparian Vegetation ◽  
Yellow River ◽  
Vegetation Coverage ◽  
Hydraulic Characteristics ◽  
Slope Gradient ◽  
The Lower Yellow River ◽  
Inhibiting Effect ◽  
Slope Sediment ◽  
Runoff And Sediment Yield

Riparian vegetation plays a vital role in soil and water conservation and river health maintenance. However, its inhibiting effects on water and soil loss are limited by different factors, such as slope gradient, vegetation coverage and their interaction. Therefore, this study quantified the inhibiting effect of riparian vegetation on the runoff, sediment and hydraulic characteristics of overland flow, and assessed its relative contribution to slope gradient. Specifically, we selected a riparian slope along the lower Yellow River as a case, and used a field-simulated rainfall experiment under specific rainfall intensity (90 mm/h), different vegetation coverage (0%, 15% and 30%) and slope gradients (5°, 10°, 15° and 20°). The results showed that the presence of vegetation can reduce the slope runoff rate and erosion rate. However, greater slope gradients can result in a lowering of the inhibiting effects of riparian vegetation on sediment yield. There was a critical value of vegetation coverage for inhibiting eroded sediments which was influenced by the degree of slope gradient. At 15% vegetation coverage, vegetation inhibited the slope sediment yield greatly at a slope gradient of less than 8°; while at 30% vegetation coverage, vegetation greatly inhibited the slope sediment yield at slope gradients <11°. Hydraulic characteristics were closely related to the slope gradient and vegetation coverage by the power function. Grey correlation analysis revealed that, with increasing of vegetation coverage, the effect of stream power on slope sediment yield decreased, while the effect of the friction coefficient on slope sediment yield increased. In summary, riparian vegetation can effectively inhibit slope runoff and sediment yield, but its inhibiting effect is notably affected by slope gradient.

Effects of gravel on runoff and sediment yield of red soil engineering accumulation slopes

2019 ◽  
Vol 39 (17) ◽  
Author(s):  
陈卓鑫 CHEN Zhuoxin ◽  
王文龙 WANG Wenlong ◽  
康宏亮 KANG Hongliang ◽  
郭明明 GUO Mingming ◽  
杨波 YANG Bo ◽  
...  
Keyword(s):  
Sediment Yield ◽  
Red Soil ◽  
Runoff And Sediment Yield

Effects of Bahia Grass Cover and Mulch on Runoff and Sediment Yield of Sloping Red Soil in Southern China

Pedosphere ◽  
2011 ◽  
Vol 21 (2) ◽  
pp. 238-243 ◽  
Author(s):  
Xin-Hu LI ◽  
Zhan-Yu ZHANG ◽  
Jie YANG ◽  
Guo-Hua ZHANG ◽  
Bin WANG
Keyword(s):  
Sediment Yield ◽  
Southern China ◽  
Red Soil ◽  
Grass Cover ◽  
Bahia Grass ◽  
Runoff And Sediment Yield

KAJIAN EROSI LAHAN DI KAWASAN AIR STRIP RUNWAY 2600 BANDARA DEPATI AMIR (PGK) BERDASARKAN TATA GUNA LAHAN MASTERPLAN ULTIMATE

2019 ◽  
Vol 7 (2) ◽  
pp. 100-111
Author(s):  
Miskar Maini ◽  
Junita Eka Susanti
Keyword(s):  
Sediment Yield ◽  
Soil Loss ◽  
Universal Soil Loss Equation ◽  
Delivery Ratio ◽  
Sediment Delivery Ratio ◽  
Sediment Delivery ◽  
Soil Loss Equation

Standar permintaan engineering pesawat agar desain bangunan infrastruktur di area Air Strip Runway 2600 yang ada dapat mempunyai fungsi lain. Sedangkan kondisi lain sangat menentukan keselamatan karena lahan di sekitar Air Strip Runway 2600 Bandara Depati Amir (PGK) jika tidak ditutupi vegetasi seperti rumput, kondisi lain lahan yang belum ditutupi vegetasi di sekitar Air Strip Runway 2600 berpotensi akan mengalami erosi lahan, kemudian hasil erosi lahan ini akan terbawa oleh aliran air sehingga akan masuk ke saluran drainase yang akan menyebabkan sedimentasi pada saluran drainase tersebut, akhirnya akan berkurang efektifitas kinerja saluran drainase tersebut. Metode yang digunakan untuk memprediksi laju rata-rata erosi di area Air Strip Runway 2600 dengan memperhitungkan faktor erosivitas hujan, erodibilitas tanah, kemiringan lereng atau panjang lereng, pengelolaan tanaman dan konservasi tanah, yang masing masing tata guna lahan tersebut mengacu pada Masterplan Ultimate Bandara Depati Amir (PGK). Perhitungan dilakukan menggunakan persamaan USLE (Universal Soil Loss Equation) yang dikembangkan oleh Wischmeier dan Smith (1965, 1978), kemudian Sediment Delivery Ratio (SDR) dan Sediment Yield.Hasil penelitian ini, prediksi laju erosi permukaan pada area Air Strip Runway 2600 Bandara Depati Amir (PGK) tahun pertama yang mencapai 5,60 mm/tahun atau 100,76 Ton/Ha/tahun, laju erosi tahun kedua mencapai 3,38 mm/tahun atau 60,84 Ton/Ha/tahun dapat diklasifikasikan ke dalam kelas bahaya erosi sedang (kelas III) dan nilai SDR adalah sebesar 56,3%, nilai sediment yield (SR) pada tahun pertama sebesar 5.887,59 Ton/Tahun, pada tahun kedua ketika rumput pada area Air Strip telah tumbuh dengan sempurna terjadi penurunan hasil sediment yield yaitu nilai SR sebesar 3.554,85 Ton/Tahun.

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