Maintenance-free vegetation ecology remediation method suitable for strip mine dumps

Abstract

The invention relates to a maintenance-free vegetation ecology remediation method suitable for strip mine dumps. The method includes the steps of firstly, sampling soil in a target strip mine dump, and subjecting the sampled soil to microflora analysis and viable organism number detection and statistics; secondly, according to the analysis result, preparing an appropriate activator which can effective activate soil functional bacteria, mixing the activator with dump surface soil and litter according to the proportion of 1:1, and performing evaluation analysis are the mixing; thirdly, applied the prepared activator to the surface soil, for vegetation planting, of the strip mine dump. The method has the advantages that soil fertility is increased effectively, the added activator can fast release nutrients such as quick-acting nitrogen and quick-acting phosphorus in the litter to increase the nutrient content in the dump soil and promote vegetation growth, and manual maintenance can be avoided.

Description

technical field [0001] The invention relates to the technical field of ecological restoration of open-pit mine dumps, in particular to a method suitable for ecological conservation of vegetation in open-pit mine dumps. Background technique [0002] Grassland ecosystem is the main type of terrestrial ecosystem. In the grassland ecosystem, a large amount of net primary productivity enters the decomposition system in the form of plant litter. Litter decomposition refers to the process in which litter is transformed from complex organic substances into simple chemical substances under natural conditions, and finally produces carbon dioxide and water, as well as the leaching of other elements and the release of energy. Therefore, as the main carbon input of grassland soil, the decomposition of litter is of great significance to the carbon cycle and nutrient cycle of the ecosystem and the global scale. On the other hand, litter decomposition has an important "post-mortem effect":...

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Problems solved by technology

Therefore, the ecological restoration of large-scale open-pit coal mine dumps plays a decisive role in the ecological construction of the entire mining area, and the main ecological problems of the dumps formed by the accumulation of a large number of peelings are as follows: 1. The physical structure of the soil matrix is ​​poor, and Poor water and fertilizer retention capacity, resulting in a lack of medium for plants to take root and stretch naturally; 2. The soil is extremely poor, and nutrients such as nitrogen, phosphorus, and organic matter are insufficient or nutrient imbalanced; 3. The reduction or loss of biomass and biological species, It has brought more adverse effects on the ecological restoration of dump sites

[0006] At present, various large-scale open-pit coal mines in China have carried out different degrees of vegetation greening and ecological restoration on the dumps. However, due to the wide range of dumps in the open-pit mines, the soil is poor, the natural environment is harsh, and the cost of manual maintenance is high and difficult. A series of problems lead to poor ecological restoration. The main factor is that the vegetation in the dump site is difficult to establish, resulting in a decrease in plant biomass and litter. The lack of soil water retention will lead to the gradual weakening and degradation of soil water retention in dump sites, and the loss of normal ecological and hydrological functions. The loss of hydrological functions in dump sites will also make it difficult for vegetation to obtain sufficient nutrients and water, and the ecosystem of dump sites will not be able to maintain normal growth and reproduction. Community succession, eventually forming a vicious circle

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