Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.06.047 |
Responses of understory plant physiological traits to a decade of nitrogen addition in a tropical reforested ecosystem | |
Mao, Qinggong1,2; Lu, Xiankai1,2; Wang, Cong1,2,3; Zhou, Kaijun1,2,3; Mo, Jiangming1,2 | |
2017-10-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 401 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Reforested ecosystems are becoming a dominant forest cover type in the tropics where anthropogenic nitrogen (N) deposition has been increasing greatly. Although understory plants play an important role in ecosystem structure and functioning, it remains unclear how long-term N deposition affects ecophysiological traits of understory species. To address this question, we expanded a ten-year simulated N deposition experiment in a tropical reforested ecosystem, with variable N addition levels as Control (no addition, NO), 50 kg N ha(-1) yr(-1) (N50), and 100 kg N ha(-1) yr(-1) (N100). Leaf physiological traits associated with photosynthetic capacity, foliar elements and N storage of seven dominant understory species were measured. Results showed that both medium-light species and shade-tolerant species had little physiological responses to N addition. However, one high-light species (Alchomea trewioides) responded significantly to N addition, showing decreases foliar N and P-max. We further found that Pmax of Alchomea trewioides was negatively correlated with the canopy closure which increased under longterm N addition. Our findings suggest that understory plant growth may be more limited by light rather than N availability, particularly under chronic high N deposition; and N deposition can suppress under story high-light species through accelerating canopy closure in some tropical reforested ecosystems. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Nitrogen deposition Physiological traits Canopy closure Understory plants Tropical forest Light limitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408073300007 |
WOS关键词 | N DEPOSITION ; RAIN-FOREST ; SEEDLING GROWTH ; TREE SEEDLINGS ; LIGHT ; PHOTOSYNTHESIS ; DIVERSITY ; CONSEQUENCES ; NUTRIENTS ; CARBON |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23426 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China; 2.Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Guangzhou 510650, Guangdong, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
推荐引用方式 GB/T 7714 | Mao, Qinggong,Lu, Xiankai,Wang, Cong,et al. Responses of understory plant physiological traits to a decade of nitrogen addition in a tropical reforested ecosystem[J]. FOREST ECOLOGY AND MANAGEMENT,2017,401. |
APA | Mao, Qinggong,Lu, Xiankai,Wang, Cong,Zhou, Kaijun,&Mo, Jiangming.(2017).Responses of understory plant physiological traits to a decade of nitrogen addition in a tropical reforested ecosystem.FOREST ECOLOGY AND MANAGEMENT,401. |
MLA | Mao, Qinggong,et al."Responses of understory plant physiological traits to a decade of nitrogen addition in a tropical reforested ecosystem".FOREST ECOLOGY AND MANAGEMENT 401(2017). |
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