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Cellular automaton-based arid region natural oasis space dynamic simulation method

A technology of cellular automata and dynamic simulation, applied in computing models, biological models, biomolecular computers, etc., can solve problems such as poor effects and inability to reflect dynamic changes in oasis space

Active Publication Date: 2020-06-19
HOHAI UNIV
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Problems solved by technology

This type of simulation method generally first divides the spatial scope of the oasis restoration area, and the dynamic change of the oasis considered is the temporal dynamic change of the spatial mean value of the vegetation index in the restoration area, that is, the response of the temporal dynamic change of the spatial mean value of the vegetation index within the static spatial range to the ecological water delivery. process, which cannot reflect the spatial dynamic changes of oasis restoration under the influence of ecological water transfer accumulation and the process of groundwater level rise
Therefore, the traditional oasis dynamic simulation scheme is ineffective

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  • Cellular automaton-based arid region natural oasis space dynamic simulation method

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[0044] In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application.

[0045] Reference to "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0046] reference figure 1 As shown, figure 1 It i...

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Abstract

The invention discloses a cellular automaton-based arid region natural oasis space dynamic simulation method. The cellular automaton-based ecological water delivery driven arid region natural oasis space dynamic simulation method includes:, based on normalized vegetation indexes, underground water burial depth observation data and other multi-source information obtained through remote sensing images, simulating the total oasis area by adopting an underground water bearing capacity function and an oasis area dynamic function; constructing a cellular NDVI, a neighborhood vegetation rate, a neighborhood flooding rate and a cellular state change probability function according to the NDVI sequence; calculating the coating conversion probability at the t + 1 moment by adopting the cellular NDVI,the neighborhood vegetation rate and the neighborhood flooding rate at the t moment; and calculating a coating conversion score of each cell by adopting a weighted average method, sorting the coatingconversion scores from large to small, setting a coating conversion dynamic threshold in combination with the oasis area simulation result, finally judging how to change the state of the cell in combination with the coating conversion static threshold, obtaining an oasis space dynamic simulation result, and reflecting a model simulation effect through precision evaluation.

Description

Technical field [0001] The invention relates to the technical field of ecological hydrology branch under geophysics, in particular to a spatial dynamic simulation method of arid zone natural oasis based on cellular automata. Background technique [0002] The ecosystem of the riparian zone in arid area and the oasis in the tail is a typical groundwater-dependent ecosystem. Irrational development and utilization of water resources in the river basin over-occupied ecological water, and the water stress induced by the decrease of surface water and the decrease of groundwater level led to the ecological degradation of natural oasis. Ecological water transport is one of the important measures for the restoration and protection of the natural oasis ecosystem in the arid area and the end of the oasis. Mastering the changes in the area of ​​the oasis and the dynamics of its spatial distribution are necessary conditions for evaluating the environmental effects of ecological water transport...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q50/06G06N3/00
CPCG06N3/002G06Q50/06
Inventor 黄峰潘若云杨丽娟张清清
Owner HOHAI UNIV
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