Ren Guangqian, Yang Bin, Cui Miaomiao, Yu Haochen, Fan Xue, Dai Zhicong, Sun Jianfan, Li Guanlin, Zhang Haiyan, Du Daolin
Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China.
School of Agricultural Engineering, Jiangsu University, Zhenjiang, China.
Front Plant Sci. 2022 Nov 3;13:1017554. doi: 10.3389/fpls.2022.1017554. eCollection 2022.
Changes in temperature and nitrogen (N) deposition determine the growth and competitive dominance of both invasive and native plants. However, a paucity of experimental evidence limits understanding of how these changes influence plant invasion. Therefore, we conducted a greenhouse experiment in which invasive L. was planted in mixed culture with native Levl. et Van under combined conditions of warming and N addition. Our results show that due to the strong positive effect of nitrogen addition, the temperature increases and nitrogen deposition interaction resulted in greatly enhanced species performance. Most of the relative change ratios (RCR) of phenotypic traits differences between and occur in the low invasion stage, and six of eight traits had higher RCR in response to N addition and/or warming in native than in invasive . Our results also demonstrate that the effects of the warming and nitrogen interaction on growth-related traits and competitiveness of and were usually additive rather than synergistic or antagonistic. This conclusion suggests that the impact of warming and nitrogen deposition on can be inferred from single factor studies. Further, environmental changes did not modify the competitive relationship between invasive and native but the relative yield of was significantly greater than . This finding indicated that we can rule out the influence of environmental changes such as N addition and warming which makes successfully invade new habitats through competition. Correlation analysis showed that invasive may be more inclined to mobilize various characteristics to strengthen competition during the invasion process, which will facilitate becoming the superior competitor in interactions. These findings contribute to our understanding of the spreading of invasive plants such as under climate change and help identify potential precautionary measures that could prevent biological invasions.
温度变化和氮沉降决定了入侵植物和本地植物的生长及竞争优势。然而，缺乏实验证据限制了我们对这些变化如何影响植物入侵的理解。因此，我们进行了一项温室实验，将入侵性的[植物名称1]与本地的[植物名称2]在增温与添加氮的组合条件下进行混合种植。我们的结果表明，由于添加氮的强烈正效应，温度升高和氮沉降的相互作用导致物种表现大幅增强。[植物名称1]和[植物名称2]表型性状差异的大多数相对变化率（RCR）出现在低入侵阶段，并且在本地的[植物名称2]中，八个性状中的六个对添加氮和/或增温的响应中RCR高于入侵性的[植物名称1]。我们的结果还表明，增温与氮的相互作用对[植物名称1]和[植物名称2]的生长相关性状及竞争力的影响通常是相加的，而非协同或拮抗的。这一结论表明，增温和氮沉降对[植物名称1]的影响可从单因素研究中推断出来。此外，环境变化并未改变入侵性的[植物名称1]与本地的[植物名称2]之间的竞争关系，但[植物名称1]的相对产量显著高于[植物名称2]。这一发现表明，我们可以排除添加氮和增温等环境变化的影响，这些变化使得[植物名称1]通过竞争成功入侵新栖息地。相关性分析表明，入侵性的[植物名称1]在入侵过程中可能更倾向于调动各种特征来加强竞争，这将有助于[植物名称1]在[植物名称1]与[植物名称2]的相互作用中成为优势竞争者。这些发现有助于我们理解诸如[植物名称1]等入侵植物在气候变化下的扩散情况，并有助于确定可预防生物入侵的潜在预防措施。
