Department of Plant Protection, Adnan Menderes University, Aydin, Turkey.
Department of Plant Production and Technologies, Faculty of Agricultural Sciences and Technologies, Niğde Ömer Halisdemir University, Niğde, Turkey.
J Sci Food Agric. 2020 Oct;100(13):4893-4900. doi: 10.1002/jsfa.10550. Epub 2020 Jul 7.
Invasive plant species present a serious threat to the environment, as well as human and animal health. An interaction may exist between the climatic changes and invasive plant species. In this 2-year study, we investigated the effects of warming, CO and nitrogen application on the biomass, growth and leaf tissue nitrogen concentration of three invasive weed species. Treatments were: (i) simulated (elevated) CO (approximately 800-900 ppm); (ii) warming or high temperature (day/night 25/15 °C); (iii) simulated (elevated) CO combined with high temperature (CO = approximately 800-900 ppm; temperature day/night 25/15 °C); and (iv) control conditions (CO = approximately 400-450 ppm; temperature day/night 20/10 °C). The doses of nitrogen were: (i) 0 kg ha (control; low); (ii) 60 kg ha (medium); and (iii) 120 kg ha (high).
Elevated CO and elevated CO combined with high temperature improved biomass and the growth of the tested invasive weed species: Lactuca serriola L., Hordeum murinum L. and Bromus tectorum L. Nitrogen application had little effect on grasses, whereas the broadleaved weed mostly had a positive response to nitrogen application. Invasive weed species were generally negatively or neutrally affected by warming.
The results of the present study demonstrate that nitrogen fertilization under different climatic conditions improved few of the parameters, whereas elevated CO promoted most of the growth parameters of invasive weeds. Overall, is it concluded that these weeds will be more invasive under climate change conditions. © 2020 Society of Chemical Industry.
入侵植物物种对环境以及人类和动物健康构成严重威胁。气候变化和入侵植物物种之间可能存在相互作用。在这项为期两年的研究中，我们调查了变暖、CO 和氮施用量对三种入侵杂草物种生物量、生长和叶片组织氮浓度的影响。处理方法为：（i）模拟（升高）CO（约 800-900 ppm）；（ii）变暖或高温（昼/夜 25/15°C）；（iii）模拟（升高）CO 与高温相结合（CO 约为 800-900 ppm；昼/夜温度 25/15°C）；和（iv）对照条件（CO 约为 400-450 ppm；昼/夜温度 20/10°C）。氮剂量为：（i）0 kg/ha（对照；低）；（ii）60 kg/ha（中）；和（iii）120 kg/ha（高）。
升高的 CO 和升高的 CO 与高温相结合提高了测试入侵杂草物种的生物量和生长：乳苣（Lactuca serriola L.）、黑麦草（Hordeum murinum L.）和雀麦（Bromus tectorum L.）。氮施用量对草影响不大，而阔叶杂草对氮施用量大多有积极响应。入侵杂草物种普遍受到变暖的负面影响或中性影响。
本研究结果表明，不同气候条件下的氮施肥改善了少数参数，而升高的 CO 促进了入侵杂草的大多数生长参数。总体而言，在气候变化条件下，这些杂草的入侵性更强。© 2020 化学工业协会。
