Swarm behavior simulation of plateau pika

As an important species on the Qinghai-Tibet Plateau, the pika
has great controversy in grassland protection and ecological function
service. The population change of pika is related to the fragile and
sensitive ecological chain of Qinghai-Tibet Plateau. The traditional
methods of population density survey include sampling method, marker
recapture method, removal sampling method, etc., which are cumbersome to
operate and consume a lot of manpower and material resources. In recent
years, more and more scholars use camera capture method to characterize or
calculate population density. This method is simple to operate and widely
applicable, but how to establish the relationship between actual
population density and monitoring data under the condition that individual
identification cannot be carried out is a big challenge faced by this
method. In order to solve this problem, the density of pika was estimated
by two methods. First, random encounter model (SEM) was used to estimate
the density of pika based on actual field observation data. Secondly, a
Monte Carlo model is established to describe the behavior of pika and the
practical problems are simulated by using probability statistics. The
results obtained by the two methods are compared and mutually verified,
and it is found that the two model results are in good agreement, and the
probabilistic model can effectively establish the relationship between the
ecological physical parameters of the population and the monitoring
space.