頁籤選單縮合
題 名 | 棲蘭山闊葉林枯落物及其養分之變動=Drymatter Dynamics and the Nutrient Contents of Litterfall in the Chi-Lan Shan Hardwoods of Northestern Taiwan |
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作 者 | 林世宗; | 書刊名 | 中華林學季刊 |
卷 期 | 31:2=121 1998.06[民87.06] |
頁 次 | 頁115-130 |
分類號 | 436.12 |
關鍵詞 | 枯落物; 棲蘭山; 暖溫帶常綠闊葉林; 養分含量; 分解常數; Litterfall; Chi-lan shan; Warm temperate evergreen hardwoods; Nutrient content; Decomposition constant; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗以台灣東北部棲蘭山區暖溫帶常綠闊葉林為對象。自1996年8月至1997 年12月,按月收集枯落物兩次,調查枯落量,包括葉、枝、花、果、附生植物及其它,並 分析其養分含量,結果顯示棲蘭山闊葉林枯落物年產量為5047 kgha□yr□,其中以落葉量 所占比例最高為78%,落枝量占11%,花、果各占2.7%及2.3%。枯落物季節性變化呈現雙 峰型,高峰期一在3月∼5月間,主要為配合新葉形成之落葉、開花期及部份樹種之落果, 如楠木、山櫻花;另一為夏秋間落葉及櫧櫟林木之落果期,颱風亦為主要影響因素。枯落物 各養分濃度為N>Ca>K>Mg>Na>P>Fe,不同枯落物組成各養分濃度亦呈不同之變化,養分 含量為N:74.2kgha□yr□; P:4.1 kgha□yr□; K:24.0 kgha□ yr□; Ca : 55.6 kgha□yr□; Mg : 14.0 kgha□yr ; Na : 5.0 kgha□yr□; Fe:1.4 kgha□yr□。其中以落葉所占含量最高。枯落層之現存 量為4720 kgha□。 |
英文摘要 | Litterfall patterns in the warm temperate evergreen hardwood forest at Chi-Lan Shan, northeastern Taiwan, were investigated from August 1996 to December 1997. Litterfall, collected twice a month, was separated into leaves, branches, flowers, fruites, epiphyts and other material. Annual total litterfall was estimated at 5047 kg ha□yr□, with 78%, 27%, 23% and 11% of the total amount frm foliar, flower, fruit and branch litter, respectively. There were two litterfall peaks each year, one in early spring, corresponding to the onset of the growing season, and the other one in late summer and early fall, mainly due to typhoons and the maturation of acorns. Among the major nutrient elements, the concentration was highest for N, followed by Ca, K, Mg, Na, P and Fe in decreasing order. However, different litter components, contained different relative amounts of these elements. Annual litter nutrient content (kg ha□ yr□), with foliar litter contributing the most, was estimatedas 74.2 kg ha□ yr□ N, 4.1 P, 24.0 K, 55.6 Ca, 14.0 Mg, 5.0 Na and 1.4 Fe. The biomass of the litter layer was estimated as 4720 kg ha□. |
本系統中英文摘要資訊取自各篇刊載內容。