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Study on original ecological tridimensional slope vegetation |
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| Authors: | Zhi-xin Yan Zhi-hua Ren Chang-ming Yan Ping Jiang Hou-yu Wang |
| Institution: | 1. Key Laboratory of Mechanics on Environment and Disaster in Western China (Lanzhou University), the Ministry of Education of China, Lanzhou, 730000, China 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, 730000, China 3. College of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha, 410004, China 4. Air Force Engineering Design & Research Bureau, Beijing, 100077, China |
| Abstract: | No matter from the perspective of slope protection, landscape effect and construction cost, or from the perspective of ecological benefit, the development of original ecological tridimensional vegetation has become the inevitable trend for slope vegetation in pursuit of protecting ecological condition, decreasing soil erosion, maintaining ecological balance and beautifying environment of slope. The concept of original ecological tridimensional slope vegetation is proposed in this paper, and the original ecological tridimensional slope vegetation is studied through theoretical analysis and experiments. Specifically, the mechanical effect of slope vegetation in reinforcing the cohesion and shear strength of soil mass is firstly discussed, and then experiments are performed to study the water interception and containing function of slope under various vegetation conditions. Moreover, the relation between soil moisture and cohesion, the relation between root distribution density and cohesion, and the relation between root distribution density and soil shear strength are also studied based on experiments. Finally, based on field observation, the soil erosion states of slope under various vegetation conditions are comparatively studied. It is found that the original ecological tridimensional slope, which combines grass, shrub and tree, can generate comprehensive slope protection effects, and hence strengthen the slope protection ability and bring multiple slope protection benefits. Thereby, the theoretical foundation for developing original ecological tridimensional slope vegetation is established. |
| Keywords: | Original ecology Tridimensional slope Slope vegetation |
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