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Study On Integrated Technology Of Ecological Restoration Applied In Semi-arid Area Of Qinghai Province

Posted on:2012-01-06Degree:DoctorType:Dissertation
Country:ChinaCandidate:X LiangFull Text:PDF
GTID:1102330332488768Subject:Environmental Science and Engineering
Abstract/Summary:PDF Full Text Request
Nearly years, with the deterioration of the road-zone's ecology environment, the human existence and development is under threat. As the main contents of road-zone's ecology restoration, the vegetation recovery becomes the social focus. Combined with the western traffic science and technology project: Study on the Ecotechnique in Highway Field, this paper firstly had researched the mechanism of ecology restoration in Huangshui River of Qinghai further, then taken the on-site inspection and monitoring for many building or built demonstration roads in the areas, at last applied the matched integrated technical systems to Xining-Ta'ersi highway of Qinghai. The recovery effects are tested and following conclusion is recieved:1. Based on the research on the concerned theory, the limitation factors of the road-zone's ecology restoration such as the climate, soil and vegetation is raised, and the relationship of dependence and limitation among those factors is confirmed. So only applying the screening design of vegetation communities, the soil's Improvement and regulation and the vegetation recovery's technique integratedly and systematically can the vegetation be built successfully and the ecology environment be recovery naturally.2. Based on the research and experiment for the concerned roads'vegetation recovery, the plant species which are helpful to make the mid compartition strip greener, beautiful and non-glare, such as Sabina przewalskii, Picea crassifolia, Sabina chinensis L., Taiwan Juniper, Giant false spiraea, Rosa,Lilac and so on, and which are suitable for use in slope vegetation restoration such as Leymussecalinus, Alfalfa, Elymus sibiricus, Dahusian wildrye, Festuca sinensis and so on.3.In order to build efficient and stable road-zone's ecosystem, the vegetation recovery design proposal which is based on the climatic features of Xining-Ta'ersi highway, the characteristics of slope's soil and the above suitable plant species is identified4. As the technique-enforcement of soil improvement, vegetation construction, and maintenance management, survival rate is kept above 90%. By using external-soil spray seeding, three-dimensional geonet sprig-grass and sodded strip technique, the grass- irrigation mixed design is tested better results.5. By estimating on the ecological benefit, the ecology protection system has gotten better ecological benefit, which is depended on the green coverage and vegetation's ecosystem function. So increasing the green coverage and choosing those plants whose survival rate and ecosystem function is better is the effective way to raise road's ecological benefit but maintenance cost.
Keywords/Search Tags:road-zone, study on the integrated ecology restoration technique, vegetation construction technique
PDF Full Text Request
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