And the generation process of runoff and sediment erosion and the hydrodynamic characteristics of flow on grass slope were quantitatively studied.
試驗(yàn)結(jié)果表明,草地與裸地坡面土壤入滲過程均符合Horton入滲公式,且裸地坡面土壤入滲率約為草地的45%;草地坡面含沙率平均值較裸地減少70%左右、輸沙率減少80%左右、徑流系數(shù)減少30%左右;裸地與草地坡面流雷諾數(shù)Re均屬于層流范疇,當(dāng)坡面徑流量較小時(shí),裸地和草地坡面流的雷諾數(shù)和弗勞德數(shù)屬于層流中的緩流范疇,當(dāng)坡面徑流量進(jìn)一步增大,裸地坡面徑流屬于過渡流急流流態(tài);草地和裸地坡面徑流深沒有明顯差異,草地坡面徑流流速明顯較裸地低,而且Darcy-weisbach阻力系數(shù)f和曼寧糙率系數(shù)n的平均值分別是裸地的3。
Experimental Study of Runoff Processes on Waste Grassland in Project Area of Banduo Hydropower Station of Yellow River
黃河班多水電站工程區(qū)荒草地坡面產(chǎn)流過程試驗(yàn)研究
(2) The amount of the soil evaporation in Eucalyptus wood slope was the highest,followed by the nature grass slope,while it was the lowest in nature slope.
(2)不同地類的土壤蒸發(fā)量為桉樹林坡面>自然草坡>階間草坡。
Experimental Research on the Impacts of Ground Slope on the Runoff of Turf;
地面坡度對草坪徑流的影響試驗(yàn)研究
the side of the mountain, tower, haystack
山、 塔、 草堆的坡面
Experimental study on the law of runoff and sediment generation in the natural grassland of the typical loess slope
典型黃土坡面天然草地產(chǎn)流產(chǎn)沙規(guī)律試驗(yàn)
Anticipated Empirical Model on Soil and Water Erosion for Grass Land in Mountain Areas of Middle Southern Part of Shandong Province
魯中南山區(qū)坡面草業(yè)用地水土流失預(yù)測經(jīng)驗(yàn)?zāi)Ｐ脱芯?/p>
Effects of slope aspect on plant community characteristics of Vetiveria zizanioides slope-protection land.
坡向?qū)ο愀葑o(hù)坡地植物群落特征的影響
The ground drops sharply near the shore.
近海邊的地面坡度很大。
Milkworth and liverwort starred the green slope.
綠草坡上的望志草和地錢苔星星點(diǎn)點(diǎn)開著花。
The thatched cottage stands on the hillside all alone.
茅草屋孤零零地坐落在山坡上。
Effect of Artificial Pasture on Soil and Water Loss on the Slope
人工牧草種植對坡地水土流失的影響
Behind it rose the first gentle slopes of the hill clad with trees, and trees marched away westward along the curving shores of the lake.
草地后面首先是林木蔥蘢的和緩山坡，這些樹木沿著蜿蜒的湖岸向西延展開來。
low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow.
貼近地面生長的植物，種植在蔭蔽處或草皮難以生長的陡峭的斜坡上。
Effect of Slope Gradients on Soil Erosion Process in Red Earth Hillslopes
地面坡度對紅壤坡面土壤侵蝕過程的影響研究
On the gentle slope near the city of Soochow, the weeds were tall.
蘇州城外一面并不很陡的山坡上，雜草叢生。
Soil Nutrient Characteristics Across Forest-grassland Landscape Boundary in Slope Forest of Loess Plateau
黃土丘陵區(qū)坡面林—草邊界土壤養(yǎng)分特征
Distribution characteristics of soil temperature at the boundary of forestland-grassland in hilly area of loess plateau
黃土丘陵區(qū)坡面林-草邊界土壤溫度分布特征
Terraced fields on steep slopes should be returned to forests or pastures in a planned and systematic way
陡坡耕地要有計(jì)劃、有步驟地退耕還林還草。