In the so-called natural development zone of the Harz National Park, which surrounds the core area, bark beetle measures are taken where necessary, and plantations are established where in order to encourage the natural development of the forest.
Harzi rahvuspargi niinimetatud loodusliku arengu tsoonis, mis ümbritseb tuumikala, võetakse vajadusel üraskimeetmed ja rajatakse istandused metsa loodusliku arengu soodustamiseks.