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首页> 外文期刊>Geoderma: An International Journal of Soil Science >Carbon input manipulations affecting microbial carbon metabolism in temperate forest soils - A comparative study between broadleaf and coniferous plantations
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Carbon input manipulations affecting microbial carbon metabolism in temperate forest soils - A comparative study between broadleaf and coniferous plantations

机译：影响温带林土土壤微生物碳代谢的碳输入操纵 - 阔叶和针叶种植园的比较研究

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摘要

Large uncertainties exist about the relative importance of aboveground litter and root carbon input on soil organic carbon decomposition in different forest types. Here, we report on our detritus input and removal treatments conducted to investigate how changes in aboveground and belowground carbon inputs affect soil organic carbon content and various microbial carbon metabolic functions in different plantation types (oak vs. pine, broadleaf vs. coniferous). The results of our study showed that doubling aboveground litter significantly increased SOC content and labile carbon metabolism in the oak plantation but not the pine plantation. Root trenching and aboveground litter removal decreased SOC content and carbon metabolisms. The effect of root trenching on carbon metabolisms was weaker than litter removal in the oak plantation but not the pine plantation. Detritus input and removal treatments changed the diversity and function of labile carbon (starch, carbohydrates, and amines/amides) and the metabolic activity of soil microorganisms in oak plantation, but mainly influenced recalcitrant carbon (polymers) metabolism in the pine plantation. Detritus input and removal treatments influenced the composition of microbial carbon metabolic genes and functions mainly by modifying the soil environment and nutrient availability including moisture, pH, nitrate content, and available phosphorus content in the oak plantation, while it influenced carbon metabolism by altering soil moisture, and the ammonium, nitrate, and organic carbon content in the pine plantation. These findings indicate that different forest ecosystems could respond differently to different disturbances, and forest management should be adjusted accordingly.
机译：关于地上垃圾和根碳投入对不同森林类型的土壤有机碳分解的相对重要性存在大的不确定性。在这里，我们报告了我们进行的Detritus输入和去除处理，以研究地上和地下碳投入如何影响土壤有机碳含量和不同种植园类型的各种微生物碳代谢功能（OAK与松树，阔叶酸和针叶树）。我们的研究结果表明，在地上凋落物加倍，显着提高了橡木种植园中的SoC含量和不稳定的碳代谢，但不是松树种植。根沟槽和地上凋落物去除降低了SoC含量和碳代谢。根部沟槽对碳代谢的影响比橡木种植园中的凋落物除垢较弱，但不是松树种植。 Detritus输入和去除治疗改变了不稳定碳（淀粉，碳水化合物和胺/酰胺）的多样性和功能，以及橡木种植园中土壤微生物的代谢活性，但主要影响了松树种植园中的醋酸碳（聚合物）代谢。 Detritus输入和去除处理影响了微生物碳代谢基因的组成，主要通过改变土壤环境和养分可用性，包括橡木种植园中的水分，pH值，硝酸盐含量和可用磷含量，而通过改变土壤水分，影响碳代谢和松树种植园中的铵，硝酸铵和有机碳含量。这些发现表明，不同的森林生态系统可以对不同的干扰进行不同的反应，并且应相应地调整森林管理。

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  • 作者

    Wang Yun; Zhang Chi; Zhang Guangna; Wang Lizhi; Gao Yuan; Wang Xinli; Liu Bo; Zhao Xingyun; Mei Heping;

  • 作者单位

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    Linyi Univ Coll Agr &

    Forestry Sci Linyi Shandong Peoples R China;

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    Linyi Univ Shandong Prov Key Lab Water &

    Soil Conservat &

    En Coll Resources &

    Environm Linyi Shandong Peoples R China;

    State Owned Tashan Forest Farm Feixian Cty Shando Linyi Shandong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

    Carbon input; Detritus input and removal treatment; Soil organic carbon; Soil microbial carbon metabolism;

    机译：碳投入;Detritus输入和去除处理;土壤有机碳;土壤微生物碳代谢;

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