The adjacent figure displays the results of productivity tests on extensively used (unfertilised) grassland sites within the PROGRASS project.
The following figure displays the interrelation between rural land use and biodiversity.
The next figure shows the changes in the number of species observed during a three years long field experiment in Germany (DE), United Kingdom (UK) and Estonia (EE) on six different sites.
"In the city grass is mown quite frequently. In Kassel it is cut an average eight times a year. That is really a lot. Especially if you compare that to extensive grasslands, that is only mown once or twice a year."
"The grass in cities isn't really that different compared to the grass in the countryside. Only management is important. The older the grass, the more fibers it will grow. Woodpulp. Because it has to last. But this depends on management and not on the place where grass grows."