Study on the relationship between plant diversity and drought cycle based on mechanism models

Abstract

The number of species plays an important role in adapting plant communities to successive drought cycles. This paper, taking the number of plant communities and populations as the research object, simulates the change process of plant population to understand the importance of plant species diversity through the interaction between plants and the impact of a drought environment. Before the experiment, a prediction model was established a prediction model to simulate the change of plant population number according to the mechanism of the change of plant population number, combined with the logistic model, and inserted it into the prediction model by considering the change of drought cycle. It describes the fluctuation of plant population, the competition and help between plant populations. By setting the criteria for judging the benefits to the community, it was assumed that the impact factors of a single species obeyed uniform distribution, carried out a large number of data simulation, studied the impact factor distribution of a single to diversified plant population, and found that with the increase of plant population, the whole plant community would tend to be stable, and the whole ecosystem would also benefit. It also shows the importance of rich plant populations. Then, this paper took into account the influence of different plant types, and carried out single simulation and combination simulation respectively for the two types of plants. Also, through a large number of data simulation, this paper obtained the curve of the impact factors changing with the population number. After analysis, it was found that the multi-population combination of multi-type plants is necessary for the stability of the ecosystem.