Here's a translation I took from Babelfish, it's not the greatest but it gives an idea how it is done.
Good, more seriously I will make my French answer because I am unable to hold a length discour in English The base of the ground is made in plastic chart evergreen (it is American... ) this in order to be able to stick to all sheets of the reeds which are they also in plastic chart of 0.13mm painted and one by one cut out with the massicot (approximately 350 to 500...) the fruits of the reeds are done with an optical fibre (for resistance) and of the green stuff the grasses are grasses of railway model making stuck tuft by tuft to the vynilic adhesive... approximately 60 tufts I added some bits of graminaceous there to vary the vegetation, as well as a small branch of photodécoupe which one does not see on these photographs water is out of resin tinted with the pastels with some inclusions of plants here here of wip.
Brian