|摘要: ||本研究主要目的在於探討不同經營方式之麻竹與孟宗竹林在林分直徑分布、生物量與碳貯存量上之差異，研究區域位於南投縣，調查之林分依不同經營程度可分類為集約經營(純林栽植並進行疏伐、施肥、灌溉等撫育措施)、粗放經營(僅施行疏伐)、混合林、未經營等四種，麻竹與孟宗竹各調查6林分，麻竹包含了集約經營、粗放經營、混合林經營等，孟宗竹則包含集約經營、粗放經營、未經營等。研究結果顯示不同經營程度竹林的胸徑具有顯著差異(p<0.05)，如麻竹林分集約經營之胸徑(7.43±0.85 cm)顯著高於粗放經營(4.70±0.91 cm)和混合林(6.1±0.13 cm)。另外，本研究以Weibull機率密度函數進行模擬林分之直徑分布，並以Kolmogorov-Smirnov進行適合度測驗，結果顯示麻竹與孟宗竹各林分以Weibull函數配適良好，而最大概似法之模擬效果較百分位數法為佳。此外，本研究以相對關係式推估林分生物量，結果指出麻竹林地上部生物量分別為集約經營之林分(32.62~39.60 Mg ha-1)、混合林(12.97 Mg ha-1)、粗放經營之林分(12.38~12.48 Mg ha-1)，而孟宗竹林地上部生物量分別為集約經營之林分(61.98~79.91 Mg ha-1)、粗放經營之林分(38.59~47.13 Mg ha-1)、未經營之林分(62.9 Mg ha-1)，顯示集約經營之林分生物量較粗放經營之林分為高，由此可知集約經營之竹林生長情形較佳。而在碳濃度方面，結果顯示孟宗竹之各部位碳濃度均顯著高於麻竹(P<0.05)，顯示孟宗竹之碳貯存潛力較高。|
The purpose of this research was to compare the diameter distribution, biomass and carbon storage between different management levels and species of Ma bamboo (Dendrocalamus latiflorus) and Moso bamboo (Phyllostachys pubescens) plantations. The study area was located in Nantou county. Four management levels, namely, intensive management (pure forest, with thinning, fertilize and irrigation), extensive management (only with thinning), mixed forest and not management were classified in management levels. Each species had 6 bamboo stands. The Ma bamboo stands included intensive management, extensive management and mixed forest, The Moso bamboo stands included intensive management, extensive management and not management. The results showed that the DBH on Ma bamboo had obvious difference between different management levels (p<0.05), the intensive management (7.43�0.85 cm) was higher than extensive management (4.70�0.91 cm) and mixed forest (6.1�0.13 cm). In addition, using the Weibull probability density function to model stand diameter distribution, and good simulative effects of Ma bamboo and Moso bamboo stands were obtained by the Kolmogorov-Smirnov test, implying that maximum likelihood estimation had a well fitness for the Weibull function more than percentile estimation. Moreover, the study using allometric equation to modle stands biomass of Ma bamboo and Moso bamboo. The aboveground biomass on Ma bamboo stands, intensive management (32.62~39.60 Mg ha-1), mixed forest (12.97 Mg ha-1), extensive management (12.38~12.48 Mg ha-1) and the aboveground biomass on Moso bamboo stands, intensive management (61.98~79.91 Mg ha-1), extensive management (38.59~47.13 Mg ha-1), not management (62.9 Mg ha-1), the results showed that the biomass was different between intensive management and extensive management, and the growth situation of Ma bamboo and Moso bamboo was intensive management better than extensive management. The results of carbon storage showed that the Concentration of carbon in each parts had obvious difference between Ma bamboo and Moso bamboo (p<0.05), the Moso bamboo was better than Ma bamboo, therefore the benefit of carbon storage was Moso bamboo better than Ma bamboo.