Part of the improvement plan is to install sand dunes and vegetation at the parking lot/beach boundary. The problem (and apparently no impact study was done) is that the vegetation will capture windblown sand and the dunes will grow over time. Then, these growing dunes will lift the sea winds off of the beach. This inhibits the beach's self-repair mechanism: the sand wont dry, the wet sand wont blow and the system is damaged.
http://www.seafriends.org.nz/oceano/beachdun.htm#effects
Trees on a beach also contribute to beach damage.
http://www.seafriends.org.nz/oceano/beachblo.htm
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