Journal of Plant Ecology ›› 2021, Vol. 14 ›› Issue (1): 84-95.DOI: 10.1093/jpe/rtaa071

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  • 收稿日期:2020-01-14 修回日期:2020-03-11 接受日期:2020-09-20 出版日期:2021-02-01 发布日期:2021-02-13

Interactive effect of climate warming and nitrogen deposition may shift the dynamics of native and invasive species

Guang-Qian Ren1,2 , Chris B. Zou3 , Ling-Yun Wan1,4 , Jacob H. Johnson3 , Jian Li1 , Lan Zhu5 , Shan-Shan Qi1,2 , Zhi-Cong Dai1,2 , Hai-Yan Zhang1,2,6 and Dao-Lin Du1,2,*   

  1. 1 Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China, 2 Institute of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China, 3 Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater 74078, USA, 4 Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China, 5 Department of Statistics, Oklahoma State University, Stillwater 74078, USA, 6 Changzhou Environmental Monitoring Center, Changzhou 213000, China

    *Corresponding author. E-mail: ddl@ujs.edu.cn
  • Received:2020-01-14 Revised:2020-03-11 Accepted:2020-09-20 Online:2021-02-01 Published:2021-02-13

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摘要： 入侵与本地植物对气候变暖和氮沉降交互效应的动态响应
在全球气候变暖背景下，对入侵物种扩张的预测往往并未考虑到同时出现的氮沉降变化。因此，气候变暖和氮沉降的复杂交互将如何改变入侵物种和本地物种的生长动态尚需进一步探索。在此，本研究假设氮沉降和温度的同时增加可能对入侵植物的生长促进效应大于本地植物。本研究在模拟气候变暖、氮沉降及其交互处理下，对入侵植物加拿大一枝黄花(Solidago canadensis L.)及其本地共存物种艾草(Artemisia argyi Levl. et Van)的生长响应进行温室对照试验。结果表明：由于氮沉降对物种生长的显著促进效应，温度升高和氮沉降的交互作用导致入侵物种和本地物种的生长适应性显著提高，即温氮交互可能使区域微生境更加有利于植物生长。然而，在生物量、高度和直径等生态适应特征方面，入侵物种加拿大一枝黄花的相对增加幅度显著低于本地物种艾草，这表明入侵物种加拿大一枝黄花相对于本地物种艾草的生长优势会在未来气候变暖与氮沉降持续增强的背景下逐渐减弱。因此，纳入氮沉降因素可能会缓解入侵物种加拿大一枝黄花在气候变暖条件下的入侵扩张。

关键词: 生物入侵, 气候变暖, 氮沉降, 相对变化, 加拿大一枝黄花

Abstract:

Aims

Projections of invasive species expansion under a warmer world often do not explicitly consider the concurring nitrogen (N) deposition. It remains largely unknown how the convoluted effect of climate warming and N deposition will shift the native and invasive species dynamics. Here, we hypothesize that the concurring increases in N and temperature would promote growth of invasive species greater than that of native species.

Methods

A controlled greenhouse experiment was conducted to quantify the growth response of an invasive species (Solidago canadensis L.) and a co-existing native species (Artemisia argyi Levl. et Van) under the effects of climate warming, N deposition and their interactions.

Important Findings

Due to the strong positive effect of N addition, the interactive effect of temperature increase and N addition resulted in an overall significant increase in growth of both invasive and native species, demonstrating that these manipulations may make microhabitats more favorable to plant growth. However, the relative increases in biomass, height and diameter of invasive S. canadensis were significantly lower than those of native A. argyi. This suggests that the vegetative growth superiority of invasive S. canadensis over the native species A. argyi is reduced by the enhanced N availability in the warmer world. Therefore, the inclusion of N deposition may mitigate the projection of invasive species S. canadensis expansion under climate warming.

Key words: biological invasion, climate warming, N deposition, relative change, Solidago canadensis

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