應用地面光達技術於臺灣杉人工林之疏伐監測

詹于萱

doi:10.6346/NPUST201900183

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应用地面光达技术於台湾杉人工林之疏伐监测

Using Terrestrial Laser Scanning System to Monitor Thinning Effects for Taiwania cryptomerioides Hayata Plantations

詹于萱 , 硕士　　导师：陈建璋;魏浚紘　　

繁体中文 DOI： 10.6346/NPUST201900183

Weibull机率密度函数；疏伐作业；林分结构；地面光达； Weibull probability density function ； thinning ； stand structure ； Terrestrial Laser Scanning System (TLS)

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摘要 │ 参考文献 (90) │ 国际计量

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Thinning is an important tending operation in the plantations management, especially has positive impacts for the tree growth. The stand structure which has been subjected to thinning operations will be changed the stand structure and to create a healthy growth space. However, how to do accuracy assessment in the effect of thinning is an important issue in forest management. In recent years, the Terrestrial Laser Scanning System (TLS) has been widely used in forest resource surveys to collect forest characteristics, due to its high precision, high density and high mobility. In this study, we used TLS to analyze the growth of Taiwania cryptomerioides Hayata plantations in Launonshi working circle. Using Weibull probability density function to simulate the stand structure, growth and how to adjust the diameter distribution of the stand to promote the growth of the forest were discussed. The results were checked the goodness of fit by K-S test, and show that the Weibull probability density function can effectively describe the diameter distribution of the 15 experimental plots, which were set up in the 40-year-old plantation of Taiwania cryptomerioides Hayata. The diameter distribution of plots is positively skewed due to the number of small-diameter woods in these plots is a great amount, and the trees have a competition each other, thinning operations must be carried out and to promote the tree growth benefits for this stand. This study used 38 thinning rates in 11 plots for thinning simulation, the relationship between the thinning rate and the relevant scale was deduced by three parameters: p=99.4203-1.6253R, and the average optimum plant spacing of the retained wood after simulated thinning was 3.34±0.06 m. The result can be used as a reference for the estimation of the number of thinning plants of each diameter class, and the distance between the single wood and the remaining plant in the thinning area of the Launonshi working circle of Taiwan Forestry Bureau. The results of the study are also available for managers to allocate the distance between the felling wood and the standing timber, and to train the thinning personnel to select the thinning wood for the thinning from below.

参考文献 ( 90 ) 〈TOP〉

李隆恩、颜添明 (2010) 红桧人工林疏伐後4年对林分及单木层级之影响。中华林学季刊 43(2): 249-260。
连结：
魏浚紘、吴守从、彭炳勳、陈朝圳 (2010) 应用空载光达建立阿里山地区柳杉人工林之林分材积式。地理学报 59: 67-80。
连结：
王子定、孔繁熙、龚正敏 (1969) 台湾杉球花枝发育及构造之研究。台大实验林研究报告69号。20页。
王亚男、蔡明哲、刘起福、郑景鹏 (2009) 不同林分密度台湾杉人工林下层疏伐对其生长之影响。台大实验林研究报告 23(4): 295-307。
余兰君 (2001) 南仁山次生林林分结构之空间变异。国立屏东科技大学森林系硕士论文。90页。

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引用含有DOI的文献

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。 如想对DOI的使用与概念有进一步了解，请参考 （ ） 。

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。