The (1+1)-dimensional bilinear Hietarinta equation was firstly
proposed when searching for integrable nonlinear evolution equations
by the three-soliton method. In this paper, we focus on the
(2+1)-dimensional extension of Hietarinta equation, which enjoys
potential application in environmental engineering. Based on the
bilinear form, one-soliotn and two-soliton solutions are derived. As
an aspect of integrability, bilinear B"acklund transformation and
Bell-polynomial-typed B"acklund transformation are derived through
the Hirota bilinear method and Bell polynomials, respectively. The
three-dimensional plots of soliton solutions have been given by
selecting appropriate parameters.