Contrasting Silicon Dynamics Between Aboveground Vegetation and Soil Along a Secondary Successional Gradient in a Cool-temperate Deciduous Forest
Contrasting Silicon Dynamics Between Aboveground Vegetation and Soil Along a Secondary Successional Gradient in a Cool-temperate Deciduous Forest
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冷温带落叶林中沿二次演替梯度的地上植被和土壤之间的硅动力学对比
DOI：
10.1007/s10021-022-00816-y
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发表时间：
2023
期刊：
影响因子：
3.7
通讯作者：
Onoda Yusuke
中科院分区：
文献类型：
--
作者：
Nakamura Ryosuke;Watanabe Tetsuhiro;Onoda Yusuke
硅是许多生物体中必不可少的或有益的元素。植被对硅的吸收强烈影响着陆地硅的动态，然而，人们对次生演替过程中植物硅循环的变化知之甚少。我们假设，社区加权平均（CWM）叶片硅浓度的变化沿着二级演替梯度，因为不同的硅吸收物种的营业额。我们还假设，水溶性土壤硅的浓度应增加硅输入到上层土壤通过增加叶凋落物。本研究测试了这些预测使用的时间序列图与林分年龄16-100年的次生演替在日本北海道的冷温带森林。我们测量了36种木本植物的叶片硅，叶凋落物硅，和水提取的土壤硅的水平，并研究其与林分年龄的相关性。叶片硅浓度在0.6 ~ 10.3 mg Si g−1之间变化17倍，在木本物种中具有强烈的系统发育信号。煤矸石叶片和凋落叶硅含量随林龄的增加而增加，反映了物种的更替和丰富度的变化。与此相反，水提取的土壤硅浓度下降，尽管叶凋落物硅通量的增加。土壤水溶性硅含量与土壤碳含量呈极显著正相关，并随林龄的增加而降低。我们的研究结果表明，在次生演替过程中，森林硅动态在很大程度上与硅积累的木本植物和土壤碳动态，这可能会影响其他硅依赖生物在生态系统中的丰度的变化。
Silicon is an essential or beneficial element in many organisms. Silicon uptake by vegetation strongly influences terrestrial silicon dynamics; however, little is known about the changes in plant silicon cycling during secondary succession. We hypothesized that the community-weighted mean (CWM) leaf silicon concentration changes along a secondary successional gradient because of turnover of species that differ in silicon uptake. We also hypothesized that the concentration of water-soluble soil silicon should increase with silicon input to the upper soil layer by increasing leaf litterfall. This study tested these predictions using chronosequence plots with stand ages of 16–100 years of secondary succession in a cool-temperate forest in Hokkaido, Japan. We measured the levels of leaf silicon in 36 woody species, leaf litter silicon, and water-extractable soil silicon and examined their correlations with stand age. The leaf silicon concentration varied by 17-fold from 0.6 to 10.3 mg Si g−1, with strong phylogenetic signals among woody species. Reflecting the turnover of species and change in their abundance, the CWM leaf and leaf litter silicon concentrations increased with stand age. In contrast, water-extractable soil silicon concentration decreased despite an increase in leaf-litter silicon flux. The water-extractable soil silicon concentration was strongly and positively correlated with the soil carbon concentration, which decreased with stand age. Our results suggest that during secondary succession, forest silicon dynamics are largely associated with changes in the abundance of silicon-accumulating woody plants and soil carbon dynamics, which potentially influences other silicon-dependent organisms in the ecosystem.
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生物硅库对土壤中水溶性硅的短期变化影响有多大？
影响因子：
4.9
作者：
Kaczorek;Wanner;Wehrhan;Sommer
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DOI：
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发表时间：
2002
期刊：
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作者：
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影响因子：
2
作者：
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墨西哥云雾森林选择性伐木后土壤、凋落物和大型无脊椎动物参数的连续变化
DOI：
--
发表时间：
2007
期刊：
影响因子：
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作者：
S. Negrete‐Yankelevich;C. Fragoso;A. Newton;O. W. Heal
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O. W. Heal
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3.7
作者：
F. Tombeur;B. Turner;E. Laliberté;H. Lambers;J. Cornelis
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F. Tombeur;B. Turner;E. Laliberté;H. Lambers;J. Cornelis