Analysis of sustainability of Chinese cities based on network big data of city rankings
文献类型：期刊论文
| 作者 | Liu, Jiakun; Zhao, Yu; Lin, Tao; Xing, Li; Lin, Meixia; Sun, Caige; Zeng, Zhiwei; Zhang, Guoqin |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2021 |
| 卷号 | 72期号:20页码:7180-7190 |
| 关键词 | Amino acids ammonium nitrate N preferences photosynthesis relative growth rate |
| ISSN号 | 0022-0957 |
| 英文摘要 | The ability of plants to acquire soil nitrogen (N) sources is plastic in response to abiotic and biotic factors. However, information about how plant preferences among N forms changes in response to internal plant N demand through growth phases, or to environmental stress such as ozone (O-3), is scarce. Diploid and triploid Chinese white poplar were used to investigate N form preferences at two key developmental periods (spring, summer) and in response to summer O-3 (ambient, 60 ppb above ambient). We used stable isotopes to quantify NH4+, NO3- and glycine N-uptake rates. Carbon acquisition was recorded simultaneously. Both ploidy levels differed in growth, N form preferences, and N and C use strategies. Diploid white poplars grew faster in spring but slower in summer compared with triploids. Diploid white poplars also showed plasticity among N form preferences through the season, with no preferences in spring, and NO3- preferred in summer, while triploids showed an overall preference for NO3-. Carbon acquisition and NO3- uptake were inhibited in both ploidy levels of poplar at elevated O-3, which also reduced diploid total N uptake. However, triploid white poplars alleviated N uptake reduction, switching to similar preferences among N forms. We conclude that N form preferences by white poplar are driven by internal C and N use in response to nutrient demands, and external factors such as O-3. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46712]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China 2.Univ Utrecht, Fac Geosci, Dept Human Geog & Spatial Planning, NL-3584 CB Utrecht, Netherlands 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.Xiamen Univ, Coll Environm & Ecol, Xiamen 361005, Peoples R China 5.South China Normal Univ, Sch Geog, Guangzhou 510631, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiakun,Zhao, Yu,Lin, Tao,et al. Analysis of sustainability of Chinese cities based on network big data of city rankings[J]. ECOLOGICAL INDICATORS,2021,72(20):7180-7190. |
| APA | Liu, Jiakun.,Zhao, Yu.,Lin, Tao.,Xing, Li.,Lin, Meixia.,...&Zhang, Guoqin.(2021).Analysis of sustainability of Chinese cities based on network big data of city rankings.ECOLOGICAL INDICATORS,72(20),7180-7190. |
| MLA | Liu, Jiakun,et al."Analysis of sustainability of Chinese cities based on network big data of city rankings".ECOLOGICAL INDICATORS 72.20(2021):7180-7190. |
入库方式： OAI收割
来源：生态环境研究中心
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