Competition increased fine root biomass in Chinese fir (Cunninghamia lanceolata) plantations in Subtropical China
Competition increased fine root biomass in Chinese fir (Cunninghamia lanceolata) plantations in Subtropical China
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竞争增加了中国亚热带杉木人工林的细根生物量
DOI：
10.1016/j.foreco.2018.12.035
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发表时间：
2019-03
影响因子：
3.7
通讯作者：
Feng Li
中科院分区：
文献类型：
--
作者：
Yingchun Liao;Houbao Fan;Xiaohua Wei;Jianping Wu;Honglang Duan;Xiaoli Fu;Wenfei Liu;Huimin Wang;Xinwu Zhan;Pu Tang;Feng Li
细根在植物从土壤中获取养分和水分方面发挥着重要作用，其数量和动态决定了树木的生长和对环境压力的适应。然而，细木根（包括吸收根和细运输根）与森林生物量或林下植被细根（林下根）之间的关系仍然知之甚少，而这正是本研究的主要目的。我们在中国亚热带不同地区、不同森林生物量水平的杉木人工林中选取了20个树龄相近（平均23年）的样地来评估上述关系。森林生物量被用作土壤状况的代理。我们发现所有树木和林下植被的细根生物量与森林生物量呈显着负相关。令我们惊讶的是，杉木细根总生物量（吸收根和细运输根）和细运输根生物量均与林下根生物量呈现显着的正相关。这些结果清楚地表明，由于森林生物量较低的林下植被的竞争，细树根生物量显着促进和增加。
Fine roots play a prominent role in plants’ acquisition of nutrients and water from the soil, and their amounts and dynamics determine trees’ growth and adaptation to environmental stress. However, the relationship between fine tree roots (including absorptive roots and fine transport roots) and forest biomass or fine understory vegetation roots (understory roots) remains poorly understood, which was the main objective of this study. We selected 20 plots in Chinese fir (Cunninghamia lanceolata) plantation forests of the similar ages (23 years old on average) in different areas with various levels of forest biomass in subtropical China to assess the above-mentioned relationship. Forest biomass was used as a proxy for soil condition.We found that all fine root biomass of trees and understory vegetation were significantly and negatively correlated with forest biomass. To our surprise, both total Chinese fir fine root biomass (absorptive roots and fine transport roots) and fine transport root biomass showed significant and positive correlations with understory root biomass. These results clearly demonstrate that fine tree root biomass is significantly promoted and increased due to competition from understory vegetation where forest biomass is low.
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影响因子：
3.7
作者：
Hui D;Wang J;Shen W;Le X;Ganter P;Ren H
通讯作者：
Ren H
影响因子：
3.5
作者：
K. Velten;O. Richter
通讯作者：
K. Velten;O. Richter
影响因子：
2.8
作者：
G. Blume‐Werry;Elin Lindén;L. Andrésen;A. Classen;N. Sanders;Jonathan von Oppen;Maja K. Sundqvist
通讯作者：
G. Blume‐Werry;Elin Lindén;L. Andrésen;A. Classen;N. Sanders;Jonathan von Oppen;Maja K. Sundqvist
影响因子：
4
作者：
Helmisaari, Helja-Sisko;Derome, John;Kukkola, Mikko
通讯作者：
Kukkola, Mikko
影响因子：
2
作者：
Finer, L.;Helmisaari, H. -S.;Vanguelova, E.
通讯作者：
Vanguelova, E.