Belowground interplant carbon transfer promotes soil carbon gains in diverse plant communities
Belowground interplant carbon transfer promotes soil carbon gains in diverse plant communities
复制标题
地下株间碳转移促进不同植物群落的土壤碳增益
DOI：
10.1016/j.soilbio.2021.108297
复制
发表时间：
2021
影响因子：
9.7
通讯作者：
Guber, A.K.
中科院分区：
文献类型：
--
作者：
Kravchenko, A.N.;Zheng, H.;Kuzyakov, Y.;Robertson, G.P.;Guber, A.K.
与单一栽培相比，不同的植物群落可以增加土壤碳（C）水平，但对这种现象的潜在机制的不完全理解限制了优化土壤C固存策略的发展。我们假设，邻近植物的身份影响的碳，植物输入到土壤中，由此形成的土壤孔隙结构，以及植物的C输入的命运的量。为了验证这一假设，我们结合13CO2植物脉冲标记与X射线计算机微断层扫描（μCT）评估植物同化的C从三个物种常见的北美草原：柳枝稷，大蓝，和野生佛手柑。植物在温室中以单一栽培和全对组合生长。进行13C标记以确保每对中只有一个成员接受了13C。结果表明，更大的地下相邻植物之间的C交换增强输入到土壤中的植物同化的C，这表明，参与地下C转移的植物群落成员，而不是社区的多样性本身，驱动快速土壤C的积累。此外，碳损失的大小以及土壤孔隙结构的特性不仅取决于碳源植物本身的身份，而且还取决于其邻居的身份。这些研究结果提出地下种间碳转移作为一个以前被忽视的机制，丰富和稳定土壤碳，并建议基因组和管理潜力，选择物种，参与密集的种间同化物交换，以促进快速和稳定的土壤碳收益。
Diverse plant communities are known to increase soil carbon (C) levels compared to monocultures, but an incomplete understanding of the underlying mechanisms of this phenomenon limits the development of strategies for optimizing soil C sequestration. We hypothesized that the identity of neighboring plants influences the amounts of C that a plant inputs into the soil, the resultant formation of soil pore architecture, and the fate of the plant's C inputs. To test this hypothesis, we combined13CO2plant pulse labeling with X-ray computed micro-tomography (μCT) in assessing plant-assimilated C from three species common to North American prairie: switchgrass, big bluestem, and wild bergamot. The plants were grown in a greenhouse in monoculture and in all-pair combinations. The13C labeling was conducted so as to ensure that only one member of each pair has received13C. The results demonstrated that greater belowground C exchange among neighboring plants enhanced inputs of plant-assimilated C into soil, suggesting that the involvement of plant community members in belowground C transfer, rather than community's diversity per se, drives rapid soil C accrual. Moreover, the magnitudes of C losses as well as properties of soil pore architecture also depend not only on the identity of the C source plant itself but also on the identities of its neighbors. These findings propose belowground interspecific C transfer as a previously overlooked mechanism for enriching and stabilizing soil C and suggest genomic and management potentials for selecting species that participate in intensive interspecific assimilate exchange in order to promote rapid and stable soil C gains.
登录
查看更多内容
影响因子：
5.5
作者：
De Deyn, Gerlinde B.;Quirk, Helen;Bardgett, Richard D.
通讯作者：
Bardgett, Richard D.
C4 草的引入对 C3 主导的演替系统中土壤碳和氮循环的影响
影响因子：
2.7
作者：
W. Mahaney;K. Smemo;K. Gross
通讯作者：
K. Gross
影响因子：
4.9
作者：
Bearden, BN
通讯作者：
Bearden, BN
杂乱数据分析，第一卷：设计实验
影响因子：
6.7
作者：
J. Schmee
通讯作者：
J. Schmee
“抽样效应”是生物多样性操纵的问题吗？
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
M. V. D. Heijden;J. Klironomos;M. Ursic;P. Moutoglis;R. Streitwolf;T. Boller;A. Wiemken;I. Sanders
通讯作者：
I. Sanders