The Plant Measures And Benefit Analysis Of Wind Erosion Control In Photovoltaic Project Construction Site In MU US Sandy Land

The study relies on photovoltaic project construction site in Mu Us sandy land. Through configuring Sedum aizoon L.、Pennisetum alopecuroides(L.) Spreng.、Hemerocallis fulva Linn.and restore natural vegetation four different artificial plant measures in different parts of the photovoltaic power plant. Observations wind erosion control benefit index and mechanism index of four plant measures and PV plant wind change. Analysis of the quantitative relationship between four plant measures and the amount of wind erosion. Reveal the mechanism of Wind erosion control measures of different plants. Concluded as follow:1.The wind speed size of two meter height at different location of photovoltaic power plant is: between the solar panels’ > outside the project area’s > under the solar panel’s.Pennisetum alopecuroides(L.) Spreng. growing areas’ ability of winds slowing is strongest.Followed by Sedum aizoon L. growing areas’, Hemerocallis fulva Linn. growing areas’ and Natural vegetation restoration site’s.The wind speed near-surface increases from wide air inlet to narrow outlet under the solar panel,and the wind speed achieve maximum at narrow outlet.So The most serious wind erosion occurs in undercutting area between the solar panels and it should be strengthened protection. Straw checkerboard barriers costs minimum and the cost is 1.5 Yuan/ m2.The costs of remaining measures are higher.The cost of planting Sedum aizoon L. is 6.4 Yuan/ m2.The cost of planting Hemerocallis fulva Linn. is 5.7 Yuan/ m2.The cost of planting Pennisetum alopecuroides(L.) Spreng. is 5.5 Yuan/ m2. The cost of sowing Pennisetum alopecuroides(L.) Spreng. is 4.8 Yuan/ m2.It should be taken more engineering measures with plant measures to play a better wind erosion control effect between the solar panels.2.It can be seen from the wind erosion control benefit index in one year. Sedum aizoon L.works best at project area periphery;The wind erosion control benefit was not significant(p>0.05) different between Sedum aizoon L. 、 Pennisetum alopecuroides(L.)Spreng. and restore natural vegetation under the solar panels.The Sedum aizoon L.and Pennisetum alopecuroides(L.) Spreng’s. wind erosion control benefits were better than therestore natural vegetation’s,and the difference was significant(p<0.05).It can be seen from the wind erosion control benefit of period of plant’s dormancy and growth. Sedum aizoon L.’s wind erosion control benefit is better than Pennisetum alopecuroides(L.) Spreng’s in period of dormancy and Pennisetum alopecuroides(L.) Spreng’s wind erosion control benefit is better than Sedum aizoon L.’s in growing period. The most serious wind erosion occurs in April and May.and soil accumulation occurs in July and August. The most serious wind erosion occurs in undercutting area between the solar panels and soil accumulation occurs away from solar panel’s narrow air outlet 2.5 to 4.5 meters between the solar panels.When the wind erosion reaches a certain level,erosion patterns will change. Resulting in the phenomenon of accelerated erosion.The Sand Flux structure of each cell is different from each other in photovoltaic power plant.and didn’t show a certain regularity. Different parts of the daily total sand transport size is:between the solar panels’ >under the solar panel’s>outside the project area’s.3.It can be seen from the soil hardness in April,the size of ability to resist wind erosion in different areas is: outside the project area’s > between the solar panels’ > under the solar panel’s. It can be seen from the moisture content of soil quality, the soil ability of resisting wind erosion gradually increase outside the project area and between the solar panels from March to October; The soil ability of resisting wind erosion began to increase and then decrease. Pennisetum alopecuroides(L.) Spreng. growing areas’ soil ability of resisting wind erosion was best outside the project area and between the solar panels from March to June.Natural vegetation restoration site’s soil ability of resisting wind erosion was best under the the solar panel. It can be seen from the growth characteristics of vegetation, Sedum aizoon L.growing areas’ soil ability of resisting wind erosion was best outside the project area;Pennisetum alopecuroides(L.) Spreng. growing areas’ soil ability of resisting wind erosion was best under the the solar panel; There experimental plots between the solar panels have poor soil ability of resisting wind erosion.