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題 名 | 關刀溪次生闊葉林地上部生物量與葉面積指數之研究=Study on Aboveground Biomass and Leaf Area Index of Secondary Hardwood in Guandaushi |
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作 者 | 薛銘童; 許博行; | 書刊名 | 林業研究季刊 |
卷 期 | 25:2 2003.06[民92.06] |
頁 次 | 頁11-24 |
分類號 | 436.12 |
關鍵詞 | 次生闊葉林; 地上部生物量; 葉面積指數; Secondary hardwood; Aboveground biomass; Leaf area index; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗選定於惠蓀林場第三林班內之關刀溪長期生態研究試區的次生闊葉林進行,在此林分選定一處20 m ╳ 20m樣區進行生物量調查,藉以推估林分單位面積之生物量。次生闊葉林地上部生物量及葉面積的測定工作,除樣區內一棵胸徑142 cm的川上氏櫧資料以異率迴歸式推估外,其餘喬木、灌木、地被及枝葉層的生物量與葉面積均已估算完成。依部位區分結果如下:樹幹、枝條、小枝條、葉及枯枝分別為276.26 Mg ha¯¹、122.22 Mg ha¯¹、3.37 Mg ha¯¹、8.75 Mg ha¯¹及1.95 Mg ha¯¹,枯枝落葉層的生物量為12.78 Mg ha¯¹,LAI為8.07。此些結果與福山闊葉林及蓮華池次生闊葉林相比較,若加入該朱川上氏櫧的推估資料,發現喬木層之樹幹及枝條生物量,均遠高於前兩個林分,其他部分則無明顯差異。然而,不論是以胸高斷面積比率或Edwards與Grubb所使用的方法來驗證,均發現本試驗之生物量推估當在合理範圍內。 |
英文摘要 | This study was working at Guandaushi Long Term Ecological Research Site in Hue-Sun Experimental Forest Station of National Chung-Hsiung University. Sampling plot is 20m×20m at secondary hardwood in this site. The aboveground biomass was investigated and the total aboveground biomass per hectare was estimated. The results showed that stem biomass was 276.26Mg ha¯¹, branch biomass was 122.22Mg ha¯¹, branchlet biomass was 3.37Mg ha¯¹, leaf biomass was 8.75Mg ha¯¹, dead branch biomass was 1.95Mg ha¯¹, litter biomass was 12.78Mg ha¯¹ and the LAI was 8.07. Comparing these results with Fu-Shan broadleaf forests and Lien-Hua-Chi secondary warm temperate montane rain forest, it can be found the total stem and branch biomass of trees are far higher than the other two sites. However, the biomass in this site is reasonably by being estimated with breast height basal area ratio or by the method submitted by Edwards and Grubb. |
本系統中英文摘要資訊取自各篇刊載內容。