{"title":"枯落物多样性对蒙古松种植园土壤酶活性和微生物群落组成的影响","authors":"Bing Mao, Guigang Lin, Biao Zhu, Lei Zhao, Qiong Zhao, Qun Gang, De-Hui Zeng","doi":"10.1007/s11104-024-07034-6","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Aims</h3><p>Plant diversity loss is increasingly recognized to affect ecological functions such as primary productivity and nutrient cycling, yet how the diversity of organic materials derived from plant litter influences soil microbial processes is largely unclear.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>A laboratory microcosm experiment was conducted to explore the effects of litter species diversity on soil enzyme activity and microbial community in a Mongolian pine (<i>Pinus sylvestris</i> var. <i>mongolica</i>) plantation of Northeast China in 2018. Leaf litter of Mongolian pine was decomposed with the senesced aboveground materials of three dominant understory species in all possible combinations.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The decomposition of mixed-species litter showed more cases of antagonistic effects on the activities of soil acid phosphomonoesterase, N-acetyl-β-D-glucosaminidase and β-glucosidase and the amount of fungal PLFAs, and synergistic effects on soil cellulase activity, the ratio of Gram-positive to Gram-negative bacteria, and the amount of actinomycetes PLFAs. Litter species composition had significant non-additive influence on soil enzyme activities and microbial community composition. According to the results of constrained redundancy analyses, litter chemical composition was significantly correlated with soil enzyme activities and microbial community composition, while the chemical diversity and stoichiometric dissimilarity had no significant effects on soil enzyme activity.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Our results indicate that the non-additive decomposition effects of mixed-species litter on soil enzyme activities and microbial community composition depended primarily on litter species composition, which is partly explained by litter chemical composition rather than litter chemical diversity and stoichiometric dissimilarity. Our findings highlight the intricate legacy effects of species loss on soil microbial processes.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"54 1","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of plant litter diversity on soil enzyme activity and microbial community composition in a Mongolian pine plantation\",\"authors\":\"Bing Mao, Guigang Lin, Biao Zhu, Lei Zhao, Qiong Zhao, Qun Gang, De-Hui Zeng\",\"doi\":\"10.1007/s11104-024-07034-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Aims</h3><p>Plant diversity loss is increasingly recognized to affect ecological functions such as primary productivity and nutrient cycling, yet how the diversity of organic materials derived from plant litter influences soil microbial processes is largely unclear.</p><h3 data-test=\\\"abstract-sub-heading\\\">Methods</h3><p>A laboratory microcosm experiment was conducted to explore the effects of litter species diversity on soil enzyme activity and microbial community in a Mongolian pine (<i>Pinus sylvestris</i> var. <i>mongolica</i>) plantation of Northeast China in 2018. Leaf litter of Mongolian pine was decomposed with the senesced aboveground materials of three dominant understory species in all possible combinations.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results</h3><p>The decomposition of mixed-species litter showed more cases of antagonistic effects on the activities of soil acid phosphomonoesterase, N-acetyl-β-D-glucosaminidase and β-glucosidase and the amount of fungal PLFAs, and synergistic effects on soil cellulase activity, the ratio of Gram-positive to Gram-negative bacteria, and the amount of actinomycetes PLFAs. Litter species composition had significant non-additive influence on soil enzyme activities and microbial community composition. 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引用次数: 0
摘要
目的越来越多的人认识到植物多样性的丧失会影响初级生产力和养分循环等生态功能，然而从植物落叶中提取的有机物的多样性如何影响土壤微生物过程在很大程度上还不清楚。方法于2018年在中国东北的蒙古松（Pinus sylvestris var. mongolica）人工林中开展了一项实验室微生态系统实验，以探索落叶物种多样性对土壤酶活性和微生物群落的影响。研究人员将蒙古松的落叶与三种优势林下物种衰老的地上部分以各种可能的组合进行分解。结果 混种枯落物分解对土壤酸性磷单酯酶、N-乙酰基-β-D-葡萄糖苷酶和β-葡萄糖苷酶活性以及真菌PLFAs量有较多的拮抗作用，而对土壤纤维素酶活性、革兰氏阳性菌与革兰氏阴性菌比例以及放线菌PLFAs量有协同作用。粪便物种组成对土壤酶活性和微生物群落组成有显著的非加成影响。结论我们的研究结果表明，混合物种垃圾对土壤酶活性和微生物群落组成的非加成分解效应主要取决于垃圾物种组成，而垃圾化学组成而非垃圾化学多样性和化学计量异质性可以部分解释这种效应。我们的研究结果凸显了物种丧失对土壤微生物过程的复杂遗留影响。
Effects of plant litter diversity on soil enzyme activity and microbial community composition in a Mongolian pine plantation
Aims
Plant diversity loss is increasingly recognized to affect ecological functions such as primary productivity and nutrient cycling, yet how the diversity of organic materials derived from plant litter influences soil microbial processes is largely unclear.
Methods
A laboratory microcosm experiment was conducted to explore the effects of litter species diversity on soil enzyme activity and microbial community in a Mongolian pine (Pinus sylvestris var. mongolica) plantation of Northeast China in 2018. Leaf litter of Mongolian pine was decomposed with the senesced aboveground materials of three dominant understory species in all possible combinations.
Results
The decomposition of mixed-species litter showed more cases of antagonistic effects on the activities of soil acid phosphomonoesterase, N-acetyl-β-D-glucosaminidase and β-glucosidase and the amount of fungal PLFAs, and synergistic effects on soil cellulase activity, the ratio of Gram-positive to Gram-negative bacteria, and the amount of actinomycetes PLFAs. Litter species composition had significant non-additive influence on soil enzyme activities and microbial community composition. According to the results of constrained redundancy analyses, litter chemical composition was significantly correlated with soil enzyme activities and microbial community composition, while the chemical diversity and stoichiometric dissimilarity had no significant effects on soil enzyme activity.
Conclusions
Our results indicate that the non-additive decomposition effects of mixed-species litter on soil enzyme activities and microbial community composition depended primarily on litter species composition, which is partly explained by litter chemical composition rather than litter chemical diversity and stoichiometric dissimilarity. Our findings highlight the intricate legacy effects of species loss on soil microbial processes.
期刊介绍：
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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