Asymmetry in above- and belowground productivity responses to N addition in a semi-arid temperate steppe
文献类型：期刊论文
| 作者 | Wang, Jing1,2,3; Gao, Yingzhi4,5; Zhang, Yunhai2,6; Yang, Junjie2; Smith, Melinda D.7; Knapp, Alan K.7; Eissenstat, David M.3; Han, Xingguo1,2,8 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2019-09-01 |
| 卷号 | 25期号:9页码:2958-2969 |
| 关键词 | aboveground net primary productivity belowground net primary productivity N deposition N response efficiency root fraction |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.14719 |
| 通讯作者 | Gao, Yingzhi(gaoyz108@nenu.edu.cn) ; Han, Xingguo(xghan@ibcas.ac.cn) |
| 英文摘要 | Nitrogen (N) enrichment often increases aboveground net primary productivity (ANPP) of the ecosystem, but it is unclear if belowground net primary productivity (BNPP) track responses of ANPP. Moreover, the frequency of N inputs may affect primary productivity but is rarely studied. To assess the response patterns of above- and belowground productivity to rates of N addition under different addition frequencies, we manipulated the rate (0-50 g N m(-2) year(-1)) and frequency (twice vs. monthly additions per year) of NH4NO3 inputs for six consecutive years in a temperate grassland in northern China and measured ANPP and BNPP from 2012 to 2014. In the low range of N addition rates, BNPP showed the greatest negative response and ANPP showed the greatest positive responses with increases in N addition (<10 g N m(-2) year(-1)). As N addition increased beyond 10 g N m(-2) year(-1), increases in ANPP dampened and decreases in BNPP ceased altogether. The response pattern of net primary productivity (combined above- and belowground; NPP) corresponded more closely to ANPP than to BNPP. The N effects on BNPP and BNPP/NPP (f(BNPP)) were not dependent on N addition frequency in the range of N additions typically associated with N deposition. BNPP was more sensitive to N addition frequency than ANPP, especially at low rates of N addition. Our findings provide new insights into how plants regulate carbon allocation to different organs with increasing N rates and changing addition frequencies. These root response patterns, if incorporated into Earth system models, may improve the predictive power of C dynamics in dryland ecosystems in the face of global atmospheric N deposition. |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000478644100009 |
| 出版者 | WILEY |
| 源URL | [http://ir.imr.ac.cn/handle/321006/134649]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Gao, Yingzhi; Han, Xingguo |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA 4.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Changchun 130024, Jilin, Peoples R China 5.Northeast Normal Univ, State Environm Protect Key Lab Wetland Ecol & Veg, Changchun, Jilin, Peoples R China 6.Georgia Inst Technol, Sch Biol Sci, Atlanta, GA 30332 USA 7.Colorado State Univ, Dept Biol, Grad Degree Program Ecol, Ft Collins, CO 80523 USA 8.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jing,Gao, Yingzhi,Zhang, Yunhai,et al. Asymmetry in above- and belowground productivity responses to N addition in a semi-arid temperate steppe[J]. GLOBAL CHANGE BIOLOGY,2019,25(9):2958-2969. |
| APA | Wang, Jing.,Gao, Yingzhi.,Zhang, Yunhai.,Yang, Junjie.,Smith, Melinda D..,...&Han, Xingguo.(2019).Asymmetry in above- and belowground productivity responses to N addition in a semi-arid temperate steppe.GLOBAL CHANGE BIOLOGY,25(9),2958-2969. |
| MLA | Wang, Jing,et al."Asymmetry in above- and belowground productivity responses to N addition in a semi-arid temperate steppe".GLOBAL CHANGE BIOLOGY 25.9(2019):2958-2969. |
入库方式： OAI收割
来源：金属研究所
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