Significant effects of biodiversity on forest biomass during the succession of subtropical forest in south China
Significant effects of biodiversity on forest biomass during the succession of subtropical forest in south China
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华南亚热带森林演替过程中生物多样性对森林生物量的显着影响
DOI：
10.1016/j.foreco.2016.04.020
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发表时间：
2016-07
影响因子：
3.7
通讯作者：
Yelin Zeng
中科院分区：
文献类型：
--
作者：
Shuai Ouyang;Wenhua Xiang;Xiangping Wang;Yelin Zeng
中国南方亚热带森林受到人类活动的广泛影响，对植物多样性和生态系统功能（BEF）具有潜在的深远影响。然而，生物多样性是否以及在多大程度上影响亚热带森林生物量仍然不确定。在这项研究中，我们分析了树木多样性（物种多样性，功能多样性和系统发育多样性）对林分生物量的影响，在3个阶段（早期，中期和晚期）的亚热带森林演替。随着森林演替的进行，物种多样性的变化与功能多样性和系统发育多样性的变化不同。在10 m × 10 m和20 m × 30 m两种空间尺度下，物种多样性指数、功能多样性指数和系统发育多样性指数与林分生物量之间的相关性不显著。然而，当其他非生物和生物因素（即，海拔、冠层光照、树干密度和林相）与多样性指数在混合模型中解释生物量，功能多样性对生物量的影响在两种分辨率下均达到显著水平。对于物种多样性指数，在20 m × 30 m分辨率下影响显著，而系统发育多样性没有显著影响。我们的研究结果表明，生物多样性影响森林生物量在亚热带森林的演替过程中，并建议功能多样性可能提供一个更好的度量比物种或系统发育多样性确定生物多样性对生物量的影响。此外，我们的研究结果表明，在其他BEF分析中得出的不同结论可能是由所研究的地块大小和所选择的多样性指标的差异所解释的。由于生物多样性和生物量之间的双变量关系可以强烈混淆，共变的非生物和生物因素，我们建议，非生物因素，演替阶段和管理措施对BEF的影响，应仔细考虑在未来的研究。
Subtropical forests across south China have been extensively affected by anthropogenic disturbances with potential profound effects on plant biodiversity and ecosystem function (BEF). However, whether and to what degree biodiversity influences biomass of subtropical forests remains uncertain. In this study, we analyzed the effects of tree biodiversity (species diversity, functional diversity and phylogenetic diversity) on stand biomass at three stages (early, mid and late) of succession in subtropical forests. As forest succession progressed, we found that the changes in species diversity were different compared with those of functional and phylogenetic diversity. Most of the indices of species and functional and phylogenetic diversity were not significantly correlated with stand biomass at two spatial grains (plot sizes of 10 m × 10 m and 20 m × 30 m). However, when other abiotic and biotic factors (i.e., altitude, canopy light, stem density and forest phase) were included with diversity indices in mixed models to explain biomass, the effect of functional diversity on biomass was significant at both resolution. For species diversity indices, the effect was significant at the 20 m × 30 m resolution, and phylogenetic diversity had no significant effect. Our results indicate that biodiversity affects forest biomass during the succession of a subtropical forest and suggest that functional diversity may provide a better metric than species or phylogenetic diversity for determining the biodiversity effect on biomass. Moreover, our results indicate that the diverse conclusions reached in other BEF analyses might be explained by differences in the plot size examined and the diversity metrics selected. Because the bivariate relationship between biodiversity and biomass can be strongly confounded by covarying abiotic and biotic factors, we suggest that the effects of abiotic factors, succession stage, and management practices on BEF should be carefully considered in future research.
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影响因子：
5.5
作者：
Falster, DS;Westoby, M
通讯作者：
Westoby, M
影响因子：
2.7
作者：
Xian Wu;Xiangping Wang;Yulian Wu;X. Xia;Jingyun Fang
通讯作者：
Xian Wu;Xiangping Wang;Yulian Wu;X. Xia;Jingyun Fang
影响因子：
6.4
作者：
P. Ruiz‐Benito;L. Gómez‐Aparicio;A. Paquette;C. Messier;J. Kattge;M. Zavala
通讯作者：
P. Ruiz‐Benito;L. Gómez‐Aparicio;A. Paquette;C. Messier;J. Kattge;M. Zavala
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
Campbell O. Webb;D. Ackerly;S. Kembel
通讯作者：
Campbell O. Webb;D. Ackerly;S. Kembel
影响因子：
3.7
作者：
Barrufol M;Schmid B;Bruelheide H;Chi X;Hector A;Ma K;Michalski S;Tang Z;Niklaus PA
通讯作者：
Niklaus PA