Biochar addition induced the same plant responses as elevated CO2 in mine spoil
| Autor: | Shahla Hosseini Bai, Carl Menke, Barbara Drigo, Yaling Zhang, Manyun Zhang, Zhihong Xu |
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| Přispěvatelé: | Zhang, Yaling, Drigo, Barbara, Bai, Shahla Hosseini, Menke, Carl, Zhang, Manyun, Xu, Zhihong |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Health Toxicology and Mutagenesis Biomass leaf C and N 01 natural sciences nitrogen use efficiency elevated atmospheric CO2 chemistry.chemical_compound Animal science Biochar Environmental Chemistry Ecotoxicology Poaceae Charcoal plant biomass biology Chemistry fungi food and beverages 04 agricultural and veterinary sciences General Medicine biology.organism_classification Pollution Agronomy visual_art Austrostipa Carbon dioxide 040103 agronomy & agriculture visual_art.visual_art_medium biochar application 0401 agriculture forestry and fisheries Pyrolysis 010606 plant biology & botany |
| Zdroj: | Environmental Science and Pollution Research. 25:1460-1469 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-017-0574-1 |
| Popis: | Nitrogen (N) limitation is one of the major constrain factors for biochar in improving plant growth, the same for elevated atmospheric carbon dioxide (CO 2 ). Hence, we hypothesized that (1) biochar would induce the same plant responses as elevated CO 2 under N-poor conditions; (2) elevated CO 2 would decrease the potential of biochar application in improving plant growth. To test these hypotheses, we assessed the effects of pinewood biochar, produced at three pyrolytic temperatures (650, 750 and 850 °C), on C and N allocation at the whole-plant level of three plant species (Austrostipa ramossissima, Dichelachne micrantha and Isolepis nodosa) grown in the N poor mine spoil under both ambient (400 μL L −1 ) and elevated (700 μL L −1 ) CO 2 concentrations. Our data showed that biochar addition (1) significantly decreased leaf total N and δ 15 N (P < 0.05); (2) decreased leaf total N and δ 15 N more pronouncedly than those of root; and (3) showed more pronounced effects on improving plant biomass under ambient CO 2 than under elevated CO 2 concentration. Hence, it remained a strong possibility that biochar addition induced the same plant physiological responses as elevated CO 2 in the N-deficient mine spoil. As expected, elevated CO 2 decreased the ability of biochar addition in improving plant growth. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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