Abstract
A large-scale fence which prevented the invasion of the deer was formed of area about 900ha on Senjogahara moor of Nikko National Park in 2001, for the purpose of keeping moor in good condition from the deer which increased very much.I clarified this article about the change of the anti-deer measures on Senjogahara moor by analyzing measures and investigations that had been carried out. As a result, confirmation of the moor recovery situation by the vegetation investigation played a key role until 2005, but anti-deer measures were carried out in earnest from 2006, and the investigation changed into it to help the enforcement of measures. In addition, recovery of the vegetation did not advance very much by the invasion of the deer to the inside of the fence until 2005, but after measures were carried out, the number of deer deceased and vegetation recovered in the fence. This result shows the possibility of the conservation of the moor by a large-scale fence preventing the invasion of the deer.
