Webconservation measures was fish-scale pit>narrow level belt>slope land>terrace. Key words:Loess hilly and gully region; land use; water conservation measure; soil moisture dynamic; 2. Introduction In the loess hilly region, the spatial combination of physiognomy, vegetation and climate results in the WebKeywords: Fish-scale pits, Runoff, Soil and water conservation, Soil erosion Soil erosion is a serious environmental problem in mountain areas in Beijing Municipality. Semicircular rainwater retention basins, also known as "fish-scale pits" can effectively reduce runoff and soil erosion and improve land productivity. The aims of this study were ...
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WebMay 1, 2024 · Six types of terracing-vegetation combinations, including leveled benches-C. microphylla (LM), fish-scale pits-P. orientalis (FO), leveled ditches-P. armeniaca (LA), … WebApr 1, 2024 · It was found that the fish-scale pits can effectively reduce the shear stress and turbulent flow energy on the wall. At the same time, it was found that the bottom of the fish-scale pits formed tiny vortices flowing in the opposite direction. The "vortex cushion effect" is combined with the "pushing effect" caused by the friction generated by ... how to restore unifi controller from backup
The efficiency of large-scale afforestation with fish-scale …
WebApr 10, 2024 · Here are some of my picks for the best fishing scales that are reliable and built to last. Best Fish Gripper Scale: Boga Grip Fishing Scale. Best Bass Fishing Scale: Rapala Touch Screen Scale 50lb ... WebOverall car weight shall not exceed 6oz. The official race scale will be considered final. Every car must be weighed prior to the race in order to qualify. Overall length of the car … WebNov 14, 2024 · By investigating the technology of artificial shaping fish-scale pit, this study explores the mechanized digging operation on the slope to provide helps for shaping fish … northeastern library access