本文選題：凋落物分解 + N�。� 參考：《生態(tài)學(xué)報(bào)》2017年01期

【摘要】：通過(guò)對(duì)相關(guān)研究文獻(xiàn)的綜述結(jié)果表明,氮(N)和磷(P)是構(gòu)成蛋白質(zhì)和遺傳物質(zhì)的兩種重要組成元素,限制森林生產(chǎn)力和其他生態(tài)系統(tǒng)過(guò)程,對(duì)凋落物分解產(chǎn)生深刻影響。大量的凋落物分解試驗(yàn)發(fā)現(xiàn)在土壤N有效性較低的溫帶和北方森林,凋落物分解速率常與底物初始N濃度、木質(zhì)素/N比等有很好的相關(guān)關(guān)系,也受外源N輸入的影響;而在土壤高度風(fēng)化的熱帶亞熱帶森林生態(tài)系統(tǒng)中,P可能是比N更為重要的分解限制因子。然而控制試驗(yàn)表明,N、P添加對(duì)凋落物分解速率的影響并不一致,既有促進(jìn)效應(yīng)也有抑制效應(yīng)。為了深入揭示N、P養(yǎng)分有效性對(duì)凋落物分解的調(diào)控機(jī)制,"底物的C、N化學(xué)計(jì)量學(xué)"假說(shuō)、"微生物的N開采"假說(shuō)以及養(yǎng)分平衡的理論都常被用于解釋凋落物分解速率的變化。由于微生物分解者具有較為穩(wěn)定的C、N、P等養(yǎng)分需求比例,在不同的養(yǎng)分供應(yīng)的周圍環(huán)境中會(huì)體現(xiàn)出不同的活性,某種最缺乏的養(yǎng)分可能就是分解的最重要限制因子。未來(lái)的凋落物分解研究,應(yīng)延長(zhǎng)實(shí)驗(yàn)時(shí)間、加強(qiáng)室內(nèi)和野外不同條件下的N、P等養(yǎng)分添加控制試驗(yàn),探討驅(qū)動(dòng)分解進(jìn)程的微生物群落結(jié)構(gòu)和酶活性的變化。
[Abstract]:The results of literature review showed that N (N) and P (P) were two important components of protein and genetic material which restricted forest productivity and other ecosystem processes and had a profound impact on litter decomposition. A large number of litter decomposition experiments showed that the decomposition rate of litter was closely related to the initial N concentration of substrate and lignin / N ratio in temperate zone and northern forest where N availability was low, and was also affected by exogenous N input. In the tropical and subtropical forest ecosystem with high soil weathering, P may be a more important decomposition limiting factor than N. However, the control experiment showed that the effects of NNP addition on litter decomposition rate were not consistent, both promoting and inhibiting effects. In order to reveal the regulation mechanism of nutrient availability on litter decomposition, the Con N chemometrics hypothesis of substrate, the N exploitation of microorganism hypothesis and nutrient balance theory are often used to explain the change of litter decomposition rate. Since microbial decomposers have relatively stable ratios of nutrient requirements such as Con Nu P, they may exhibit different activities in the surrounding environment of different nutrient supply, and the most deficient nutrient may be the most important limiting factor of decomposition. In the future studies on litter decomposition, we should extend the experiment time, strengthen the experiment of nutrient addition and control under different indoor and field conditions, and probe into the changes of microbial community structure and enzyme activity that drive the decomposition process.
【作者單位】： 福建師范大學(xué)地理科學(xué)學(xué)院;福建師范大學(xué)濕潤(rùn)亞熱帶山地生態(tài)國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地;
【基金】：國(guó)家自然科學(xué)基金面上資助項(xiàng)目(31270584);國(guó)家自然科學(xué)基金重點(diǎn)資助項(xiàng)目(31130013)
【分類號(hào)】：S714

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 宋新章;江洪;張慧玲;余樹全;周國(guó)模;馬元丹;Scott X. Chang;;全球環(huán)境變化對(duì)森林凋落物分解的影響[J];生態(tài)學(xué)報(bào);2008年09期

2 王相娥;薛立;謝騰芳;;凋落物分解研究綜述[J];土壤通報(bào);2009年06期

3 曲浩;趙學(xué)勇;趙哈林;王少昆;;陸地生態(tài)系統(tǒng)凋落物分解研究進(jìn)展[J];草業(yè)科學(xué);2010年08期

4 許湘琴;林植華;陳慧麗;;凋落物分解對(duì)土壤生物的影響[J];生態(tài)學(xué)雜志;2011年06期

5 王苗苗;侯扶江;;草地凋落物分解的主要影響因素[J];草業(yè)科學(xué);2012年10期

6 石福臣,丁寶永,閏秀峰,朱廷棟;三江平原天然次生柞木林凋落物分解規(guī)律的研究[J];東北林業(yè)大學(xué)學(xué)報(bào);1990年S3期

7 莫江明,孔國(guó)輝,Sandra BROWN,方運(yùn)霆,張佑昌;鼎湖山馬尾松林凋落物及其對(duì)人類干擾的響應(yīng)研究[J];植物生態(tài)學(xué)報(bào);2001年06期

8 陳金林,吳春林,姜志林,許新建;櫟林生態(tài)系統(tǒng)凋落物分解及磷素釋放規(guī)律[J];浙江林學(xué)院學(xué)報(bào);2002年04期

9 邵玉琴 ,趙吉 ,楊R，

本文編號(hào)：2003810