本文選題：秦嶺 + 土壤微生物　； 參考：《生態(tài)學報》2016年10期

【摘要】：利用BIOLOG微孔板法研究了秦嶺山脈的銳齒櫟(Quercus aliena var.acutidentata)、油松(Pinus tabuliformis)、華山松(Pinus armandii)、松櫟混交、云杉(Picea asperata)6個林地5種典型林分土壤微生物群落代謝特征。發(fā)現(xiàn):(1)5種典型林分中,華山松的平均顏色變化率(AWCD)最高,然后是銳齒櫟1云杉油松銳齒櫟2松櫟混交。位于不同林場的銳齒櫟林地土壤AWCD值差異較大;(2)土壤微生物功能多樣性指數(shù)與平均顏色變化率表現(xiàn)一致,6種林分之間差異顯著,且不同的林分土壤微生物對6種碳源利用差異較大。(3)主成分分析顯示各土壤微生物功能多樣性具有顯著差異,其綜合因子得分為華山松銳齒櫟1油松云杉銳齒櫟2松櫟混交。(4)冗余分析表明土壤p H、有機質(zhì)、全氮、堿解氮、速效磷和速效鉀的綜合作用對土壤微生物群落功能多樣性有顯著影響,其中速效磷和p H與土壤微生物功能多樣性最密切。
[Abstract]:The metabolic characteristics of soil microbial communities of 6 typical forests in Qinling Mountains were studied by BIOLOG microporous plate method, including Quercus aliena var. acutidentataer, Pinus tabuliformis, Pinus armandii, Pinus armandii, mixed pine and oak, Picea asperata. It was found that the average color change rate (AWCD) of Pinus huashanensis was the highest among the five typical stands, and then the mixture of Pinus arbuscus, Pinus tabulaeformis and Quercus acuminata. The difference of soil AWCD value in different forest farms was significant. (2) the soil microbial function diversity index and the average color change rate were consistent with each other, and there were significant differences among 6 stands. The principal component analysis showed that there were significant differences in the functional diversity of soil microorganisms among different stands. The integrated factor scores of Pinus arbuscus, Pinus tabulaeformis, Pinus tabulaeformis, Quercus acuminata, Quercus acuminata and Quercus acervum are as follows: soil P H, organic matter, total nitrogen, alkali-hydrolyzed nitrogen. The combination of available phosphorus and available potassium had a significant effect on the functional diversity of soil microbial communities, among which available phosphorus and pH were the most closely related to soil microbial functional diversity.
【作者單位】： 西北農(nóng)林科技大學資源環(huán)境學院農(nóng)業(yè)部西北植物營養(yǎng)與農(nóng)業(yè)環(huán)境重點實驗室;西北農(nóng)林科技大學水土保持研究所;西北農(nóng)林科技大學林學院;
【基金】：國家林業(yè)公益性行業(yè)科研專項(201304307) 西北農(nóng)林科技大學“基本科研業(yè)務(wù)費科研創(chuàng)新重點項目”(ZD2013012)
【分類號】：S714.3

【相似文獻】

相關(guān)期刊論文 前10條

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2 AnnC．Kennedy,VirginiaL．Gevoin,蔡洪濤;土壤微生物多樣性　現(xiàn)在及將來的研究[J];青海草業(yè);1998年02期

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本文編號：1926900