How Will Global Environmental Changes Affect the Growth of Alien Plants?
How Will Global Environmental Changes Affect the Growth of Alien Plants?
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DOI：
10.3389/fpls.2016.01623
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发表时间：
2016
影响因子：
5.6
通讯作者：
Liu Y
中科院分区：
文献类型：
--
作者：
Jia J;Dai Z;Li F;Liu Y
全球环境变化可以创造新的栖息地，促进外来植物的生长，这些植物通常表现出广泛的环境耐受性和高表型可塑性。然而，这些生长促进作用的机制目前尚不清楚。在这里，我们进行了一项遗传控制的荟萃分析，使用111项已发表的研究数据，包括129种外来植物对全球变暖，降水增加，氮沉降和CO2富集的反应。我们比较了木本和非木本生命形式以及C3和C4光合途径之间的6类功能性状的外来植物对4个全球环境变化因子的响应差异。我们的研究结果表明，所有四个全球变化因素促进外来植物的生长。变暖对C4植物的影响比C3植物更积极。虽然这四个因素对外来植物功能性状的影响是可变的，但植物生长主要是通过增加生长速度和大小。我们的数据表明，未来潜在的全球环境变化可能会进一步促进外来植物的生长。
Global environmental changes can create novel habitats, promoting the growth of alien plants that often exhibit broad environmental tolerance and high phenotypic plasticity. However, the mechanisms underlying these growth promotory effects are unknown at present. Here, we conducted a phylogenetically controlled meta-analysis using data from 111 published studies encompassing the responses of 129 alien plants to global warming, increased precipitation, N deposition, and CO2 enrichment. We compared the differences in the responses of alien plants to the four global environmental change factors across six categories of functional traits between woody and non-woody life forms as well as C3 and C4 photosynthetic pathways. Our results showed that all four global change factors promote alien plant growth. Warming had a more positive effect on C4 than C3 plants. Although the effects of the four factors on the functional traits of alien plants were variable, plant growth was mainly promoted via an increase in growth rate and size. Our data suggest that potential future global environmental changes could further facilitate alien plant growth.
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