Artist John David Ciccetti, a landscape architect (the link is to his firm) and lecturer at CSULB, did most of the work of designing and integrating the art and landscape in the park.
In 2006, he received an Award of Excellence from the California Parks and Recreation Society. Read about it here.
In addition to the seven mosaics, the park's artwork also includes a decorative fence along the street that shows air--blowing grasses and lifting balls or balloons--a theme which continues over the entrance and "Calbrisas Park" sign, where kites fly.
I see many other parks on Ciccetti's website, mostly urban, using artistic fencing and inlays on the ground to create a play space or stage in narrow areas surrounded by buildings.
At a Century 21 office, he used flower beds to create a mosaic effect when viewed from above.
Mostly, Ciccetti seems to be a genius at carving out spaces in quarters that should look cramped, given the dimensions.
The bottom picture here is in Long Beach--the East Village Arts Park. Click on it to see what I mean about creating a park space in an area that is challenging, to say the least.