惠蓀實驗林場不同密度杉木林生物量與養分含量之研究

Abstract

本研究以惠蓀實驗林場之28年生杉木人工林為研究對象，民國72年時該地 區曾施行弱度、中度、強度疏伐及未疏伐處理，9年後調查分析其保留木 之四種不同密度(A：6253株／ha、B：5533株 ／ha、C：4320株／ha、 D：3686株／ha)以平均木法測定不同密度處理對生物量及養分含量之影 響，供作該地區杉木人工林經營撫育之參考。

Research materials of the study included Cunninghamia lanceolata plantations of 28 years old in Hui-Sun experimental forest station . The thinning treatments with four densities (control、weak thinning、middle thinning、strong thinning) were implemented over this area in 1983. The influence of thinning treatments with four densities on the biomass and nutrient contents was investigated by average tree method in 1992. The results would be used for the management of Cunninghamia lanceolata plantation in this area.