本文選題：秦巴山區(qū)　切入點(diǎn)：厚樸群落　出處：《生態(tài)學(xué)報(bào)》2016年16期 　論文類型：期刊論文

【摘要】：以秦巴山區(qū)7個(gè)厚樸群落為對(duì)象,分析土壤養(yǎng)分含量的變化規(guī)律,同時(shí)對(duì)各群落土壤肥力進(jìn)行評(píng)價(jià),以期為該區(qū)土壤肥力的提高和厚樸群落配置模式的篩選提供理論依據(jù)和實(shí)踐指導(dǎo)。結(jié)果表明,秦巴山區(qū)厚樸群落間土壤養(yǎng)分含量差異顯著;除全磷和全鉀外,隨土層深度的增加,土壤有機(jī)質(zhì)、全氮、堿解氮、速效磷和速效鉀含量逐漸減小。厚樸群落土壤肥力綜合指數(shù)從大到小依次為:4a凹葉厚樸(1.054)2a凹葉厚樸(0.882)山茱萸-凹葉厚樸混交林(0.673)7a尖葉厚樸(-0.243)7a凹葉厚樸(-0.713)杜仲-凹葉厚樸(-0.812)11a凹葉厚樸(-0.840)。因此隨著林齡的增大,厚樸群落土壤肥力有下降的趨勢(shì)。結(jié)合厚樸群落土壤養(yǎng)分差異分析和厚樸群落土壤肥力評(píng)價(jià)結(jié)果,得出山茱萸-凹葉厚樸混交林的土壤肥力相對(duì)較好,為該區(qū)植被恢復(fù)的最佳營(yíng)造模式。
[Abstract]:Taking 7 Magnolia officinalis communities in Qinba Mountain area as the object, the variation of soil nutrient content was analyzed, and the soil fertility of each community was evaluated at the same time. The results showed that there were significant differences in soil nutrient content among Magnolia officinalis communities in Qinba Mountains, except total phosphorus and potassium. With the increase of soil depth, soil organic matter, total nitrogen, alkali-hydrolyzed nitrogen, The comprehensive index of soil fertility of Magnolia officinalis community was: 1. 054 ~ 2 ~ (2 a) a) Fructus Corni and Magnolia officinalis mixed forest 0.6737 ~ (7) a. Magnolia cuspidata-0. 2437a. Magnolia officinalis L. -0.812 ~ (11) a. Therefore, with the increase of forest age, The soil fertility of Magnolia officinalis community has a tendency to decrease. According to the analysis of soil nutrient difference of Magnolia officinalis community and the evaluation result of soil fertility of magnolia officinalis community, it is concluded that the soil fertility of the mixed forest of Fructus Corni and Magnolia officinalis is relatively good. It is the best construction mode for vegetation restoration in this area.
【作者單位】： 西北農(nóng)林科技大學(xué)生命科學(xué)學(xué)院;陜西省水土保持生態(tài)環(huán)境監(jiān)測(cè)中心;
【基金】：陜西省農(nóng)業(yè)攻關(guān)項(xiàng)目(2013K01-06) 中醫(yī)藥行業(yè)科研專項(xiàng)(201207002) 中醫(yī)藥公共衛(wèi)生專項(xiàng)(財(cái)社[2011]76號(hào))
【分類號(hào)】：S158
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本文編號(hào)：1562421