Method, device and system for evaluating community stability of open pit coal mine dump

Abstract

The invention provides a method, device and system for evaluating the community stability of an open pit coal mine dump. The evaluation method comprises the following steps of: establishing an evaluation hierarchy of the community stability of the open pit coal mine dump, wherein the evaluation hierarchy comprises: a target layer, a factor layer and an index layer, the target layer takes communitystability as an evaluation target, the factor layer comprises a community structure, community functions and a community environment, and indexes of the index layer comprise community diversity indexes, coverage, height, species number, overground biomass, underground biomass, soil moisture content, soil total nitrogen, soil available phosphorus and soil available potassium; Calculating the weight of each index in the index layer by using an analytic hierarchy process, and constructing a community stability evaluation system; And normalizing the indexes in the index layer, calculating a community stability index through an evaluation system and determining a community stability level. The technical problem that the ecological stability evaluation method in the prior art cannot accuratelyreflect the structural characteristics and the functional characteristics of the community is solved.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to a method, device and system for evaluating community stability of an open-pit coal mine dump. Background technique [0002] Community stability refers to the static or dynamic stability of the plant community within a certain period of time and within a certain boundary range. It is a comprehensive feature of the structure and function of the plant community, and reflects the changes in the external conditions of the plant community or the existence of human disturbance. ability to resist or recover. [0003] When carrying out ecological restoration work in degraded habitats, they often focus on the research and development of individual restoration technologies, such as soil and water conservation, land reclamation, vegetation reconstruction, soil reconstruction, etc., lack of systematic thinking, poor self-sustainability of restored habitats, and high artificial maintenance costs. Th...

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Problems solved by technology

[0005] Based on the above problems, the present invention proposes an evaluation method, device and system for the community stability of an open-pit coal mine dump, which solves the technical problem that the ecological stability evaluation method in the prior art cannot accurately reflect the structural characteristics and functional characteristics of the community

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