| With the rapid development of economic construction, Various types of production construction projects have emerged, Project construction and production process is bound to surface disturbance, piled spoil, spoil and waste rock, changing the original topography, ground damage vegetation and soil and water conservation facilities, exacerbating soil erosion occurs. The current production of construction projects to prevent soil erosion, to a certain extent on the configuration of the corresponding plant measures, but heavy engineering, light plant measures exist, indiscriminate use of plant measures, plant structure configuration monotonous, community structure and function is not perfect and so on, can not really do comprehensive restoration project good ecological environment, local conditions, the impact of ecological benefits of play.In this study, restoration ecology as the theoretical basis, primarily through access to relevant information, combined with the existing research results, considering the various types of production and construction projects for land disturbance characteristics, analyzes the basic characteristics of each type of disturbance, according to the corresponding binding characteristics site conditions, vegetation disturbance zone in northern Shaanxi production and construction optimal allocation were discussed. The study includes the following three aspects:(1) to collect soil and water conservation tree, shrub and grass common in North plant;(2) comprehensive analysis of production projects the basic characteristics of the disturbance zone draw five partitions;(3) design partitions for each vegetation class configuration mode. The main conclusions are as follows:1.a common soil and water conservation tree, shrub and herb plants in NorthThrough large amounts of data to collect soil and water conservation in northern common trees, shrubs, vines, herbs, etc., and a brief description in terms of biological characteristics, applications, its ability to highlight key consideration in terms of soil and water conservation, sorting out the cold drought resistant infertile soil and water conservation 46 kinds of plants, 21 kinds of anti-dust and harmful gases and water conservation plant, 30 kinds of ornamental plants and strong soil and water conservation, 32 kinds of forest and water conservation plant, 11 kinds of nitrogen-fixing soil and water conservation plant, vegetation disturbance zone to optimize production and construction projects Configuring the foundation.2.Production and Construction disturbed area can be divided into five partitionsThe production and construction project is divided into five categories: First, the subsidence area, low soil moisture poor water to do water storage projects, and select drought-resistant plants; Second, the dug area to select resistant infertile plants; Third, other disturbed areas, reduce soil organic matter, do the preliminary work of the fertilizer; Fourth gangue area, the soil is acidic, in combination corresponding engineering measures, based on the chosen acid plants; five residue field area, thin soil layer to be done good work casing.3.5 class configuration mode partition vegetation optimizationAccording to the characteristics of each project partition, combining specific biological characteristics of plants, designed five vegetation recovery mode, Agroforestry Ecosystem dominated borrow vegetation configuration mode optimized for landscape ecological aesthetic disturbance zone-based plant configuration mode is optimized to take advantage of forestry-based coal gangue hill plant configuration mode optimized for nitrogen fixation resistance, barren vegetation-based slag field configuration mode to optimize all areas of vegetation in the selection, there are some basic common characteristics, such as cold, drought resistance, barren, salinity, strong adaptability, strong resistance to toxic gases, dust and other resistant, water and soil conservation pioneer species and so on. |
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