The response of tree growth to nitrogen and phosphorus additions in a tropical montane rainforest
| Autor: | Jingyun Fang, Longchao Xu, Zhang Zhou, Biao Zhu, Suhui Ma, Jianxiao Zhu, Chengyang Zheng, Xin Jing, Xuli Zhou, Haihua Shen, Yide Li, Lai Jiang, Di Tian |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Ecology Phosphorus Diameter at breast height chemistry.chemical_element 04 agricultural and veterinary sciences Subtropics Rainforest Biology 01 natural sciences Pollution Agronomy chemistry Relative growth rate Forest ecology 040103 agronomy & agriculture Temperate climate 0401 agriculture forestry and fisheries Environmental Chemistry Waste Management and Disposal Deposition (chemistry) 0105 earth and related environmental sciences |
| Zdroj: | Science of The Total Environment. 618:1064-1070 |
| ISSN: | 0048-9697 |
| Popis: | Rapid increase of global nitrogen (N) deposition has greatly altered carbon cycles and functioning of forest ecosystems. Previous studies have focused on changes in carbon dynamics of temperate and subtropical forests through N enrichment experiments; however, the effects of N deposition on tree growth remain inconsistent, especially in tropical forests. Here, we conducted a five-year N addition experiment (0 and 50kgNha-1yr-1) in a tropical montane rain forest in Hainan Island, China, to explore the effects of enhanced N deposition on growth of trees. We also set phosphorus (P) treatment (50kgPha-1yr-1) and N+P treatment (50kgNha-1yr-1+50kgPha-1yr-1) to examine potential P limitation driven by N deposition. Our results showed that N addition has not significantly influenced tree growth, while P addition significantly increased the relative growth rate of small (diameter at breast height, DBH≤10cm) and medium (10 |
| Databáze: | OpenAIRE |
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