However, experience has shown that the forest must be dense and contain several hundred trees for every 2.5 acres [1 ha], as well as older and younger trees of different species.
Namun, pengalaman menunjukkan bahwa hutan tersebut harus lebat, dan ditanami beberapa ratus pohon pada setiap hektar, yang terdiri dari beberapa spesies pohon tua serta pohon muda.