Abstract:he bioproductivity and growth characteristics of reed vegetation and the soil conditionswere measured on the beach of east China Sea in the east of Shanghai 311‘N at differentdistances from the levee to the sea sbore,Its mean net primary production was 2.0740.554kgm-2a-1,of which the biomass of above-ground and under-ground parts were 1.4330.382 and 0.6410.566kgm-2a-1 ,respectively。Experimental results for reed plants growing over the levee indicated that,when atmo-sphric CO2 concentratio...