Dry-hot stress significantly reduced the nitrogenase activity of epiphytic cyanolichen
文献类型：期刊论文
| 作者 | Liu, Shuai; Liu, Wenyao ; Shi, Xianmeng; Li, Su; Hu, Tao; Song, Liang; Wu, Chuansheng
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018 |
| 卷号 | 619期号:x页码:630-637 |
| 关键词 | Stipa-bouteloa Grassland Montane Rain-forest Broad-leaved Forest Ailao Mountains Southwest China Co2 Exchange New-zealand Biomass Production Nostoc-commune Boreal Forests |
| ISSN号 | 0048-9697 |
| 英文摘要 | Nitrogen (N) fixed by epiphytic cyanolichens (i.e. lichens that contain cyanobacterial symbionts) is thought to be the most important resource of this nutrient in some natural forest ecosystems. Although a great deal of work has been carried out to evaluate the biomass of this group as well as its contribution to ecosystem N budgets, empirical studies are needed to confirm the N input responses by cyanolichens under climate change conditions (dry-hot stress) as well as to determine the factors that control this process. We simulated climate change conditions by transplanting Lobaria retigera, a common cyanolichen in the area, to lower elevations, and measured nitrogenase activity in response to warmer and drier conditions. In addition, we conducted a series of laboratory and greenhouse experiments to determine the dominant factors influencing nitrogenase activity in this species. The results of this study show that mean annual nitrogenase activity at the higher site was 1.5 and 2.4 times that at the simulated warmer and drier (middle and lower) sites, respectively. Combining laboratory experimental conclusions, we show that thallus water content is a key factor determining the nitrogenase activity of L. retigera in early transplantation while insufficient carbon storage resulting from a combination of warming and desiccation was likely responsible for reducing nitrogenase activity in later months of the transplant experiment. The results of this study imply that the negative impact of climate change (dry-hot stress) on ecosystems not only impacts the distribution and growth of species, but also nutrient circles and budgets. (C) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 公开日期 | 2018-03-07 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10786]  |
| 专题 | 西双版纳热带植物园_恢复生态学组 |
| 通讯作者 | Liu, Wenyao |
| 推荐引用方式 GB/T 7714 | Liu, Shuai,Liu, Wenyao,Shi, Xianmeng,et al. Dry-hot stress significantly reduced the nitrogenase activity of epiphytic cyanolichen[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,619(x):630-637. |
| APA | Liu, Shuai.,Liu, Wenyao.,Shi, Xianmeng.,Li, Su.,Hu, Tao.,...&Wu, Chuansheng.(2018).Dry-hot stress significantly reduced the nitrogenase activity of epiphytic cyanolichen.SCIENCE OF THE TOTAL ENVIRONMENT,619(x),630-637. |
| MLA | Liu, Shuai,et al."Dry-hot stress significantly reduced the nitrogenase activity of epiphytic cyanolichen".SCIENCE OF THE TOTAL ENVIRONMENT 619.x(2018):630-637. |
入库方式： OAI收割
来源：西双版纳热带植物园
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