A Research On Ecological Restoration Of The Earthquake Stricken Area In Beichuan County

The occurrence of "May.12th" earthquake caused a great loss of life and property damage to Beichuan County. Meanwhile, it also caused serious damage to the ecological environment of that County. The constant occurrence of geological disasters has a great impact on the reconstruction of the stricken area and the normal life of local people. Through the analysis of ecological destruction of study area agriculture, ecological safety, and the soil of the influence of the harmful metal elements that ecological restoration is essential; Soil fertility, the foundation of the building after a disaster implementation conditions, provide the conditions for ecological restoration.Based on the reconnaissance of the stricken area, the author of this paper gets a better understanding of the basic types of ecological damage in the stricken areas, which are mainly divided into three categories:1) The ecological damage caused by landslide. The landslides could bury the extensive vegetation and cause serious damage to the vegetation of the region, resulting in the reducing of the vegetation area and the surface soil fertility.2) The ecological damage caused by collapse. The occurrence of collapse may directly bury the vegetation of the region; what’s more, the collapse taken place along the river may block the river, forming the barrier lake. The rolling stones caused by the collapse would damage the infrastructure and threaten the safety of the residents.3) The ecological damage caused by mudslides. The debris flow erosion could completely destroy the surface vegetation of the area it flowed by, the river along will be completely buried, which may cause a huge security threat to the residents’lives and properties.According to the ecological damage types and characteristics of study area, following methods will be used to perform ecological restoration:1) The study area shows landslide area, is large which can cause serious damage and the soil fertility is low, therefore, different regional characteristics of the slope ecological management employ separately ecological bags protection system, lattice protection system and the external-soil spray seeding technique.2) The collapse of the ecological management put to use ecological dam, Hang galvanized wire mixly spray grass planting technology. Additionally, The two measures can not only effectively prevent the collapse occurred after the occurrence of the collapse and the harm caused by rolling stone, but also has the certain afforested effect.3) the ecological management of debris flow is mainly through setting diversion dike, the rapids trough, and beam dike etc, in order to reduce the hazard of debris flow. Some of the buried region, biological restoration and land reclamation.4) for water conservancy facilities to implement a series of ecological design, as the study area biological provide good habitat, be helpful for its survival and reproductive success, also reduced the because rainwater savings and the harm caused.5) natural repair mainly through the bank in plant and complementary with simple engineering measures to reinforce the Banks and the ecological environment repairs; In different areas according to the local actual situation the way of different closed to facilitate afforestation.Through the research area in ecological remediation research of ecological environment will be further improved, to carry on the social economic construction laid a good foundation, also be helpful for the study area of the living environment of good build.