Study On Ecological Restoration Of Beichuan Mine

With the rapid development of China’s economy, accelerating the process of urbanization, the rapid increase in the rapid development of mineral resources and mining economy, although the development and utilization of mineral resources for China’s rapid economic development and urban construction has made great contributions, but also brought a series of environmental problems such as inevitable: the destruction of land resources and biological resources, soil erosion, air pollution, water pollution, leading to serious ecological damage and even lead to geological disasters mudslides, landslides, avalanches, etc., It is a very serious and increasingly important concern. To do this, how to do after the mineral development of the local ecological environment restoration is a question worth considering.In this paper, Qinggangshu mining wasteland soil, chemical analysis of soil nutrients experimental analysis; the use of 3S technology to integrate the principle of land use in the study area were analyzed; in plant selection using AHP plant optimization screening, to elect suitable for the growth of mining plant; mine Gang green tree Status field investigation and analysis, partition management for different levels of the mine destruction. The main results are:(1) Beichuan in the development of mineral resources at the same time, the environment has been destroyed, mainly in the destruction of vegetation, mountain damage, soil pHysical and chemical properties change, dust mining and transport ore generated in the process, and may even induce geological disasters and other environmental problems.(2) Variation range Xiangquan Township Qinggangshu Mine Soil pH value between 4.9 to 5.1, with an average of 5.0, the soil is acidic, the average moisture content of the soil was mine 15.98 g / kg. Soil organic matter, total nitrogen, pHospHorus, potassium content was 8.66 g / kg, 534.24 mg / kg, 4.87 mg / kg, 45.73 mg / kg, low nutrient content of the soil, poor soil.(3) The use of Arc gis software analysis concluded that the decade 2005-2015, the number of Xiangquan Township Qinggangshu mining land use around the types of changes in land mine development, road construction and land a substantial increase in woodland, farmland sharp Save oriented. Development of land mines, road construction land increment respectively 517154.98 m2 and 39506.74 m2, woodland and arable land has reached-420093.82 m2 abatement and-153506.46 m2, in recent years, with the implementation of a number of policies to accelerate the development process, area 2010 2015 change width was significantly higher than in 2005- 2010.(4) On the current situation Xiangquan Township Qinggangshu mining the investigation, and the implementation of the recovery partition by detailed project plan, namely: I zone, II area, III area. And to develop appropriate measures to restore vegetation through these details in several areas of analysis.(5) The type of vegetation restoration process of selection is critical, this article will be selected from the plants into herbs, vines, shrubs, trees four categories, respectively AHP for screening. And using the analytic hierarchy process to implement filtering. The adaptability, functionality and economy as the main criterion level factors by comparing the level of plant weight finalized arborvitae, black locust, walnut, Chinese pistache sea buckthorn, bamboo, multiflora rose, vetiver, Pennisetum, ivy and ivy as Qing gangshu mining wasteland vegetation recovery plants.