Ecological Restoration Of The Riparian In Changshou District, Chongqing City

Taohuaxi River line the left bank of a tributary of the Yangtze River, flows through the Changshou District. Water pollution and soil erosion of Taohuaxi River facing the increasingly serious situation due to industrial waste water and living sewage discharge. Both sides of the river bank protection of ecological environment of the improvement has an important role. To explore the ecology of urban river bank protection the importance of technology and its application of the results, this paper relies on the State Forestry Administration, "948" project, "urban river ecosystem restoration of forest biological engineering technology introduction (2007-4-14)" in Taohuaxi riparian restoration techniques for riparian ecosystem research, with a view to build ecological restoration of urban rivers and provide a theoretical foundation and scientific basis.The study includes the theory and technology of river ecosystem revetment, bank soil physical and chemical characteristics of slope soil corrosion resistance, shear resistance of soil slope, bank vegetation, Taohuaxi River comprehensive evaluation of effects of riparian ecosystem restoration, wetland bank protection device design and screening of such fillers, the main findings are as follows:Riparian restoration will be advanced technology and our philosophy of combining ecological riparian building designed for our bank protection measures, and bank protection program was implemented in Taohuaxi River the Chongqing sectionCombination of laboratory tests using field survey methods for ecological revetment applications of Taohuaxi River in Changshou were studied after the effect. Communities in general, vegetation revetment of the best plant growth, species richness, more uniform distribution, species diversity index is higher. Shear strength of soil slope, vegetation revetment (68.6kPa)> Natural fabric mat revetment (68.0kPa)> Natural fabric flat bag revetment (57.7kPa)> control slope (40.6kPa). The series of bank protection techniques for soil improvement role in the overall best bank protection measures to vegetation, revetment mat somewhat less natural fabrics, natural fabrics and vegetation revetment mat of soil micro-aggregate water stability was significantly better than the natural bank protection and control fabric flat bag shore slope, and its effect on soil structure improvement is most obvious. Corrosion resistance of the revetment type composite score was:vegetation revetment (-5.69)> Natural fabric mat revetment (-6.31)> Natural fabric flat bag revetment (-12.97)> control slope (-15.00). Different revetment types are different levels of the river bank slope to enhance the corrosion resistance of soil, vegetation and natural fabric revetment mat corrosion resistance of the soil was significantly greater than the natural bank protection and control fabric flat bag Slope.The ecological revetment model of Taohuaxi River was analyzed of the effects of ecological restoration by the A HP in Changshou. The revetment types of quantitative indicators of ecological restoration effects range between 0.709-0.928, and the order of:vegetation revetment (0.928)> revetment mat of natural fabrics (0.874)> Natural fabric flat bag revetment (0.819)> control slope (0.709). The revetment types of ecological restoration effects are better than the control slope, vegetation revetment repair with the best, natural fabrics and natural fabric pad flat bag revetment effect followed.Designed with protection slope, water and landscape features such as wetlands bank protection device, the method by laboratory tests to study the filler under different conditions of adsorption of pollutants, zeolite, round ceramic, shale, gravel and coarse sand filling of the five pollutants and ammonia nitrogen adsorption volume with the TP adsorption increases with time, reaching the maximum adsorption capacity, the adsorption stabilized or declined slightly. At 10℃-25℃temperature range, the temperature of the test five filler little effect on the adsorption of ammonia; round ceramic, shale, gravel and coarse sand of TP adsorption increased with increasing temperature are, high temperature is not conducive to zeolite adsorption of TP. Zeolite adsorption of ammonia under acidic conditions favorable, the effect of zeolite to remove ammonia in the pH range of 6-7 is best; round ceramic range of pH 6-10 with a better purification of ammonia effect. Five kinds of filler in the alkaline conditions better than the TP removal removal under acidic conditions. Studied the use of artificial wetlands bank protection device selection and purification of waste water filling ratio, program 1,5,7 of NH3-N and TN removal rate are high, more than 40% are recommended in the purification of NH3-N and TN as the main pollutants of sewage, using the ratio of the above program; program 2,5 CODcr removal rate of about 50%, when the main component of sewage CODcr, the program can be applied to the proportion of the ratio of 2 and 5; Scenario 5 the removal of various pollutants have a high ratio of filler is the ideal combination of solutions. And obtain a patent.In this paper, urban rivers ecological revetment techniques, enriched the content of the study river ecosystem, river systems for urban ecology and sustainable management of building a scientific basis.