本文關(guān)鍵詞： 溫帶森林 土壤發(fā)生層 生物地球化學(xué)　出處：《應(yīng)用生態(tài)學(xué)報》2017年10期 　論文類型：期刊論文

【摘要】：采用土壤分層取樣法測定了帽兒山地區(qū)相同氣候條件、不同立地條件下林齡相近的2種人工針葉林(紅松林和興安落葉松林)和3種天然落葉闊葉林(蒙古櫟林、楊樺林、硬闊葉林)的土壤碳(C)、氮(N)、磷(P)元素含量,以及土壤容重、土壤厚度等,研究土壤C、N、P含量和密度及化學(xué)計(jì)量關(guān)系的垂直變化特征.結(jié)果表明:不同林型間土壤C、N、P含量和密度差異顯著,其中硬闊葉林土壤O層和A層的C、N含量和密度均顯著高于其他林型.所有林型土壤的C、N含量均隨土層加深而下降;落葉闊葉林土壤P含量隨土層加深而顯著下降,但針葉林各土層間P含量差異不顯著.不同林型間A層土壤C/N、O層土壤N/P,以及A和B層土壤C/P均存在顯著差異.不同林型間土壤C-N存在顯著的線性關(guān)系,且其斜率和截距在林型間差異均不顯著,但土壤N-P、C-P關(guān)系只在闊葉林中存在顯著相關(guān)關(guān)系.這表明不同林型間土壤C-N耦聯(lián)關(guān)系有趨同現(xiàn)象,而土壤N-P和C-P關(guān)系隨林型而變.
[Abstract]:Two artificial coniferous forests (Pinus koraiensis and Larix gmelinii) and three natural deciduous broad-leaved forests (Mongolian oak forest and poplar birch forest) and three natural deciduous broad-leaved forests (Pinus koraiensis and Larix gmelinii) and three natural deciduous broad-leaved forests (Mongolian oak forest and poplar birch forest) were determined under the same climatic conditions and. In hard broadleaved forests, the contents of C _ (C _ (N), N _ (N) N _ (N), P _ (P)), and the bulk density and thickness of the soil, etc., The vertical variation characteristics of soil C ~ (2 +) N ~ (+) P contents and densities and stoichiometric relationships were studied. The results showed that there were significant differences in soil C ~ (2 +) N ~ (+) P contents and densities among different forest types. The contents and densities of C ~ + N in O layer and A layer of hard broad-leaved forest soil were significantly higher than those in other forest types. The contents of C ~ + N in all forest soils decreased with the deepening of soil layer, and P content in deciduous broad-leaved forest soil decreased significantly with the deepening of soil layer. But there was no significant difference in P content among different soil layers in coniferous forest. There were significant differences in N / P, C / P and C / P in C / N layer and C / P of C / N layer among different forest types, and significant linear relationship existed in soil C-N among different forest types. There was no significant difference in slope and intercept between forest types, but only in broad-leaved forests, which indicated that the soil N-P and C-P relationships between different forest types tended to converge, while the soil N-P and C-P relationships varied with forest types.
【作者單位】： 東北林業(yè)大學(xué)生態(tài)研究中心;
【基金】：科技部“十三五”重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFD0600201) 教育部長江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃項(xiàng)目(IRT_15R09) 東北林業(yè)大學(xué)本科生創(chuàng)新項(xiàng)目(201310225006)資助~~
【分類號】：S714.2

【相似文獻(xiàn)】

相關(guān)期刊論文 前4條

1 林英華;孫家寶;劉海良;張夫道;孫龍;金森;;黑龍江帽兒山土壤動物群落組成與多樣性分析[J];林業(yè)科學(xué);2006年04期

2 仲偉彥,殷秀琴,陳鵬;帽兒山森林落葉分解消耗與土壤動物關(guān)系的研究[J];應(yīng)用生態(tài)學(xué)報;1999年04期

3 林英華;孫家寶;鄭桂華;張夫道;孫龍;金森;;帽兒山土壤動物在凋落葉分解過程中的動態(tài)和作用[J];東北林業(yè)大學(xué)學(xué)報;2005年06期

4 蔣汪洋;羅傳文;孫海洪;彭勃;;基于ArcEngine的帽兒山林場GIS開發(fā)系統(tǒng)[J];東北林業(yè)大學(xué)學(xué)報;2010年10期

相關(guān)碩士學(xué)位論文 前1條

1 石福孫;帽兒山潛在溝系及土壤侵蝕的研究[D];東北林業(yè)大學(xué);2003年

，

本文編號：1503244