Morphological traits of Chamaecyparis obtusa fine roots are sensitive to soil acid buffering capacity
Morphological traits of Chamaecyparis obtusa fine roots are sensitive to soil acid buffering capacity
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DOI：
10.1007/s11104-020-04561-w
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发表时间：
2020-05
期刊：
影响因子：
4.9
通讯作者：
Ryuusei Doi;T. Tanikawa;Ryusei Wada;Y. Hirano
中科院分区：
文献类型：
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作者：
Ryuusei Doi;T. Tanikawa;Ryusei Wada;Y. Hirano
目的研究钝顶小球藻Chamaecyparis obtusa(Sieb.)&Zucc.)完了。根随着土壤酸缓冲能力(ABC)的不同而不同，即沿土壤酸化的梯度。我们采用了基于顺序的根系分类系统，而不是基于直径的根系分类系统，因为前者与根的功能关系更密切。方法我们采集了210个完整的四级细根系统，测量了3eC中16,657个单株枝序根的形态特征。结果1~4级根系的形态特征在不同土壤类型之间存在显著差异。在低ABC土壤中，细根系统由比高ABC土壤中更多更细的根组成。二级根直径与土壤pH值、盐基离子浓度呈正相关，与土壤铝呈负相关。结论细根形态特征是土壤酸化的敏感指标。愚钝的人。
AimsThe purpose of this study was to clarify how the morphological traits ofChamaecyparis obtusa(Sieb. & Zucc.) Endl. roots vary with soil acid buffering capacity (ABC), i.e., along a gradient in soil acidification. We used an order-based root classification system instead of a diameter-based root classification system, as the former relates better to root function.MethodsWe sampled 210 intact fine root systems up to the fourth order and measured the morphological traits of a total of 16,657 individual branch-order roots in threeC. obtusastands with high soil ABC and four stands with low soil ABC.ResultsWe found significant differences in the morphological traits of the first- to fourth-order roots between the soil ABCs. In the low-ABC soils, the fine root systems consisted of more and thinner roots than in the high-ABC soils. The diameter of the second-order roots was positively correlated with the soil pH and the concentration of base cations, but negatively with soil aluminum.ConclusionMorphological traits of fine roots are sensitive indicators of soil acidification inC. obtusaforests.