Warming of alpine tundra enhances belowground production and shifts community towards resource acquisition traits
文献类型：期刊论文
| 作者 | Yang, Yan1,2; Klein, Julia A.2; Winkler, Daniel E.3; Peng, Ahui1; Lazarus, Brynne E.4; Germino, Matthew J.4; Suding, Katharine N.5; Smith, Jane G.5; Kueppers, Lara M.6 |
| 刊名 | ECOSPHERE
 |
| 出版日期 | 2020 |
| 卷号 | 11期号:10页码:e03270 |
| 关键词 | alpine tundra belowground plant production functional traits Rocky Mountains soil moisture warming water use efficiency |
| ISSN号 | 2150-8925 |
| DOI | 10.1002/ecs2.3270 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Climate warming is expected to stimulate plant growth in high-elevation and high-latitude ecosystems, significantly increasing aboveground net primary production (ANPP). However, the effects of simultaneous changes in temperature, snowmelt timing, and summer water availability on total net primary production (NPP)-and elucidation of both above- and belowground responses-remain an important area in need of further study. In particular, measures of belowground net primary productivity (BNPP) are required to understand whether ANPP changes reflect changes in allocation or are indicative of a whole plant NPP response. Further, plant functional traits provide a key way to scale from the individual plant to the community level and provide insight into drivers of NPP responses to environmental change. We used infrared heaters to warm an alpine plant community at Niwot Ridge, Colorado, and applied supplemental water to compensate for soil water loss induced by warming. We measured ANPP, BNPP, and leaf and root functional traits across treatments after 5 yr of continuous warming. Community-level ANPP and total NPP (ANPP + BNPP) did not respond to heating or watering, but BNPP increased in response to heating. Heating decreased community-level leaf dry matter content and increased total root length, indicating a shift in strategy from resource conservation to acquisition in response to warming. Water use efficiency (WUE) decreased with heating, suggesting alleviation of moisture constraints that may have enabled the plant community to increase productivity. Heating may have decreased WUE by melting snow earlier and creating more days early in the growing season with adequate soil moisture, but stimulated dry mass investment in roots as soils dried down later in the growing season. Overall, this study highlights how ANPP and BNPP responses to climate change can diverge, and encourages a closer examination of belowground processes, especially in alpine systems, where the majority of NPP occurs belowground. |
| 语种 | 英语 |
| WOS记录号 | WOS:000588068600016 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50742]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Kueppers, Lara M. |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, 9 Sect 4,Renminnan Rd, Chengdu 610041, Sichuan, Peoples R China; 2.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Campus Delivery 1476, Ft Collins, CO 80523 USA; 3.US Geol Survey, Southwest Biol Sci Ctr, 2290 S West Resource Blvd, Moab, UT 84532 USA; 4.US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, 970 Lusk St, Boise, ID 83706 USA; 5.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA; 6.Univ Calif Berkeley, Energy & Resources Grp, 310 Barrows Hall 3050, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Yang, Yan,Klein, Julia A.,Winkler, Daniel E.,et al. Warming of alpine tundra enhances belowground production and shifts community towards resource acquisition traits[J]. ECOSPHERE,2020,11(10):e03270. |
| APA | Yang, Yan.,Klein, Julia A..,Winkler, Daniel E..,Peng, Ahui.,Lazarus, Brynne E..,...&Kueppers, Lara M..(2020).Warming of alpine tundra enhances belowground production and shifts community towards resource acquisition traits.ECOSPHERE,11(10),e03270. |
| MLA | Yang, Yan,et al."Warming of alpine tundra enhances belowground production and shifts community towards resource acquisition traits".ECOSPHERE 11.10(2020):e03270. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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