Water and nutrient flows were measured in catchments on strongly weathered loamy sediments of the Zanderij formation in Suriname under undisturbed forest and forest silviculturally treated whereby 40 % of the biomass was killed. The topography of the two catchment areas studied (each of about 150 ha) is gently undulating. The main soil is a well dr...
Een onderzoek naar de structuur van de afzet in de boomkwekerij op basis van enquetes onder 300 boomkwekers en 150 handelaren in bomen en planten in Nederland
Tien houtteeltvarianten zijn in dit onderzoeksverslag onderscheiden: populier-, eik-, beuk-, groveden-, fijnspar-, douglas- en lariks-kwaliteitshout, populier-, groveden- en fijnspar-massaproduktie. Bezien is in hoeverre de interne rentevoet der diverse teeltvaranten zich ontwikkelt bij diverse veronderstellingen t.a.v. mogelijke toekomstige ontwik...
Door het beschikbaar komen van nieuwe opnamegegevens zijn de opbrengsttabellen van 1972 herzien. De nieuwe tabellen zijn samengesteld met behulp van het computerprogramma OPTAB
The use of heavy machinery and transport vehicles is an integral part of modern forest operations. This use often causes damage to the standing trees and to the soil. In this study the effects of vehicle traffic on the soil are analysed and the possible consequences for forest management discussed. The study is largely restricted to sandy and loamy...
A polycyclic system is proposed and discussed for the economically accessible mesophytic (evergreen seasonal) forests in Suriname. In this system, known as Celos Silvicultural System, a restricted amount of about 20 m 3quality timber is taken once about every 20 years in a well controlled selection felling operation. This seemed to be the best comp...
