查詢結果分析
來源資料
頁籤選單縮合
題 名 | Nutrient Release during Single and Mixed Leaf Litter Decomposition from Larix principis-rupprechtii and Other Tree Species on the Loess Plateau, China=黃土高原落葉松及其他樹種枯落葉單獨與混合分解過程中的養分釋放 |
---|---|
作 者 | 張曉曦; 劉增文; 邴塬皓; 朱博超; 杜良貞; 祝振華; | 書刊名 | 臺灣林業科學 |
卷 期 | 29:2 2014.06[民103.06] |
頁 次 | 頁85-101 |
分類號 | 436.12 |
關鍵詞 | 黃土高原; 落葉松; 枯落葉分解; 養分釋放; The Loess Plateau; Larix principis-rupprechtii; Leaf litter decomposition; Nutrient release; |
語 文 | 英文(English) |
中文摘要 | 以黃土高原主要造林樹種落葉松(Larix principis-rupprechtii)及其他擬混雜的10個樹種為對象,採集當年枯落葉并以無林荒草地腐殖質層土壤作為分解介質,在室內將落葉松與其他樹種枯落葉單獨或以一定比例混合後裝入尼龍網袋並埋入盛土培養缽中,進行恒溫(20~25℃)恒濕(50%田間持水量)下連續345d分解培養試驗。結果表明:枯落葉單獨分解時,大量元素整體上較微量元素容易釋出。除C和N外,其他元素釋出速率與其初始含量無顯著相關關係(C為負相關,N正相關)。根據綜合主成分分析表明,與落葉松枯落葉混合分解總體上明顯促進養分釋放的樹種為白榆(Ulmus pumila)和油松(Pinus tabulaeformis),其次為白樺(Betula platyphylla);總體上明顯抑制養分釋放的樹種為側柏(Platycladus orientalis)和刺愧(Robinia pseudoacacia),其次為小葉楊(Populus simonii)。能夠促進枯落葉養分釋放的樹種將是選擇與落葉松混雜樹種時首先考慮的物種。 |
英文摘要 | Current-year leaf litter from "Larix principis-rupprechtii" and 10 other tree species planned for a mixed forest was collected on the Loess Plateau of China and placed in nylon mesh litterbags singly or mixed according to set ratios and then buried in humus soil from a tree-free waste grassland for a 345-d incubation under constant temperature (20~25˚C) and humidity (50% of the field water capacity). Results showed that during decomposition, macro-elements were generally more easily released than micro-elements. Release rates of most elements had no significant relationships with their own initial contents in the litter except for C and N, for which C had a negative correlation and N had a positive correlation. According to the comprehensive impacts of all 10 elements released during mixed litter decomposition with "L. principis-rupprechtii", "Ulmus pumila" and "Pinus tabulaeformis" obviously accelerated nutrient release, followed by "Betula platyphylla"; "Platycladus orientalis" and "Robinia pseudoacacia" obviously inhibited nutrient release, followed by "Populus simonii". In conclusion, those tree species that accelerate nutrient release during mixed litter decomposition should be given a higher priority for selection for mixed-forestation with "L. principis-rupprechtii." |
本系統中英文摘要資訊取自各篇刊載內容。