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題 名 | Stand Growth Simulation of a Taiwania Plantation in the Liouguei Area=六龜地區臺灣杉人工林林分生長模擬之研究 |
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作 者 | 汪大雄; 謝漢欽; 湯適謙; 鍾智昕; | 書刊名 | 臺灣林業科學 |
卷 期 | 25:2 2010.06[民99.06] |
頁 次 | 頁155-169 |
分類號 | 436.11 |
關鍵詞 | 林分生長模擬; 相容性; 臺灣杉; Stand growth simulator; Compatibility; Taiwania cryptomerioides; |
語 文 | 英文(English) |
中文摘要 | 台灣杉(Taiwania cryptomerioides)是台灣重要之本土樹種,亦是林業試驗所六龜試驗林最主要之造林樹種。本研究從林分之觀點,以有系統方式將影響台灣杉生長之各項因素(如林齡,地位,密度等),納入台灣杉各項生長(如胸徑生長,斷面積生長,材積生長,林分密度和結構改變),並進行各項生長之整合,發展出台灣杉林分生長模擬器。使用相容性之概念發展林分斷面積和林分材積生長模式,再配合六龜試驗林永久樣區之台灣杉生長資料,推導出各項生長模式。整體言之,由於林分株數之變異較大導致林分株數模式之配置效果較差外,其餘大部份之各項生長模式配置結果均佳(R^2>0.82),顯示本研究模式得到良好之配置結果。林分經營者可就某一現實林分輸入必要之資料透過台灣杉林分生長模擬器(TCSIM),進行不同經營撫育策略下林分未來可能變化之模擬,以掌握林分之動態變化。 |
英文摘要 | Taiwania cryptomerioides is a quite important endemic species in Taiwan, and is the most abundant species in plantations in the Liouguei Experimental Forest, southern Taiwan. Using the concept of compatibility and numeric equivalence among stand-level attributes, this study established a growth and yield stand simulator for Taiwania plantations in the Liouguei area. Based on data from permanent plots of Taiwania plantations in the experiment forest, the components of a growth and yield model such as diameter, tree height, stand density, and stand structure modules were separately fitted in sequence and then integrated, and finally computer software (TCSIM) was coded to implement the integrated growth and yield simulator. As an adjunct to the stand-level equations, compatible stand/stock tables were derived by solving for the parameters of the Weibull distribution from attributes predicted with the stand-level equations. The results indicated that the goodness of fit for all equations were good (R^2>0.82) except for the tree density equation and basal removal function. By inputting the current stand age, tree density, basal area, projection length, and management options into TCSIM, dynamic changes for a given stand can effectively be evaluated. |
本系統中英文摘要資訊取自各篇刊載內容。