Shunde Daliang Village Rocky Slope Greening Effect Survey And Abandoned Quarry Greening Design Application

Rock slope in Daliang area of Shunde were investigated in this paper has been completed two green complex, research on Evaluation of litter layer is formed to restore the two green project in vegetation restoration and vegetation on the slope of the soil and water conservation. According to the status of the vegetation restoration of plant diversity investigation method, through the ecological evaluation, evaluation of greening effect. Greening of slope soil and water conservation mainly concentrated in the litter layer of soil and water conservation function, through field sampling litter, rainfall simulation environment test chamber.The research results show that the effect of vegetation restoration of rock slope, the physicochemical properties of native vegetation rich Shuiniugang, grass and shrub in niche with scientific and rational, and the soil to improve soil, plants grow better. Rich in plant species, reasonable planting proportio, up to 96, evergreen and deciduous tree species in the proportion of nearly 3:1, seasonal deciduous ensure slope organic source quality fully. 15 kinds of leguminous plants, nodule nitrogen fixation can also improve soil properties of rock slope, provide a good habitat conditions for other shrubs; from the plant community structure, Shuiniugang Green complex slope is mainly dominated by trees, but the trees growth parameters is generally not high, even more than the tree shrub grass and shrub has long HISTEP, but the plant community construction mode can make the Shuiniugang complex community structure diversity, green patches and plaques compared with primary anastomosis. Through the investigation and Research on the quantitative characteristics of vegetation restoration, sleep niugangshan edamame important value is high, the coverage rate and the relative frequency is higher, the illumination and soil composition competition seriously affected the growth of other plants. Toyama green plant species monotonous, only 33 species, more to Leguminosae, Compositae and Gramineae, proportions of evergreen and deciduous plants is not reasonable, can not guarantee the source of soil organic matter, succession rate. Although the slope maintenance period(1.5 years) than the Shuiniugang(3 years), but from the plant species, community configuration and greening effect, the slope is still need a longer time to reach the green complex effect.On the other hand, the Shuiniugang complex green and litter layer of soil and water conservation function of litter has reached around, soaking water absorption in the water ten minutes before the water absorbing capacity of 60% rainfall, litter layer can quickly absorb moisture. The litter water absorption process to 18 h or so to reach saturation state, indicating that the absorption capacity of litter layer on rainfall for a long time, the formation of the dispersion, block surface runoff and increase infiltration of great significance. In the four position of the slope, litter accumulation slope and maximum net capacity is large, the amount of water that litter storage and litter accumulation on. The litter layer might reduce surface runoff, slope and runoff depth, thickness of stagnant runoff and litter about. Overall this study, and increased with the increase of the thickness of litter layer, litter stagnant runoff time. With the increase of runoff depth, runoff time reduce litter. This study only measured the effect of litter on 30 degrees slope slow runoff, while in other slope under the effect of litter on the stagnant runoff remains to be further studied. Litter cover can reduce the slope soil erosion on slope, litter decreased capacity of soil erosion may be related to the shape of the litter, in this study, relative to other slope positions, the poor effect of soil erosion on hillslopes reduce litter platform. On the platform of the shrub and herb plants are more, especially the cogon grass, reed grasses of the family Gramineae plants are more, Gramineae plant litter leaves narrow, elongated, and the contact area of water to the water retention ability is poor, the amount of soil erosion was significantly greater than that of the other slope. In the litter under the action of surface soil(0-15cm) and chemical properties improved, organic matter, alkali solution nitrogen, available potassium, available phosphorus content increased, soil fertility enhancement.