| 施加氮磷肥对希腊北部高原草地上土壤pH与植被生产力的相互关系的影响 |
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| 引用本文： | S. D. VERESOGLOU,O. K. VOULGARI,R. SEN,A. P. MAMOLOS,D. S. VERESOGLOU. 施加氮磷肥对希腊北部高原草地上土壤pH与植被生产力的相互关系的影响[J]. 土壤圈, 2011, 21(6): 750-752. DOI: 10.1016/S1002-0160(11)60178-1 |
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| 作者姓名： | S. D. VERESOGLOU O. K. VOULGARI R. SEN A. P. MAMOLOS D. S. VERESOGLOU |
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| 作者单位： | Faculty of Agriculture;Laboratory of Ecology and Environmental Protection;Aristotle University of Thessaloniki;Department of Environmental and Geographical Sciences;Manchester Metropolitan University;John Dalton Building; |
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| 基金项目： | Supported by the Greek National Scholarship Foundation |
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| 摘 要： | The potential role of soil pH in modulating plant productivity was assessed on the basis of dry mass, harvested in the form of 0.25 m2 quadrats, in two low-productivity upland grasslands of northern Greece subjected to annual factorial nitrogen (N) and phosphorus (P) fertilization (15 g N m-2 year-1 and 10 g P m-2 year-1) over a minimum period of 3 years. It was hypothesized that under these particular conditions, a positive relationship would exist between soil pH and plant productivity and, further, that N or P fertilizer application of a nutrient limited system, would result in a weakening of this positive relationship. A significant positive relationship was confirmed between soil pH and plant productivity in one of the two study areas and a positive trend in the other. Moreover, plant productivity increase, following fertilization, appeared to have a detrimental effect on the soil pH-plant productivity relationship. Findings support the original hypotheses and strengthen the idea that plant diversity-mediated soil pH-plant productivity relationships are a result of the more intense plant speciation that occurred under the more "typical" soil conditions of higher pH in temperate as opposed to tropical regions.
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| 关 键 词： | altitude ecological patterns low productivity grasslands temperate ecosystems |
| 收稿时间： | 2011-03-14 |
Effects of nitrogen and phosphorus fertilization on soil pH-plant productivity relationships in upland grasslands of northern Greece |
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| S. D. VERESOGLOU,O. K. VOULGARI,R. SEN,A. P. MAMOLOS and D. S. VERESOGLOU. Effects of nitrogen and phosphorus fertilization on soil pH-plant productivity relationships in upland grasslands of northern Greece[J]. Pedosphere, 2011, 21(6): 750-752. DOI: 10.1016/S1002-0160(11)60178-1 |
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| Authors: | S. D. VERESOGLOU O. K. VOULGARI R. SEN A. P. MAMOLOS D. S. VERESOGLOU |
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| Affiliation: | Faculty of Agriculture, Laboratory of Ecology and Environmental Protection, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece);Faculty of Agriculture, Laboratory of Ecology and Environmental Protection, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece);Department of Environmental and Geographical Sciences, Manchester Metropolitan University, John Dalton Building, Chester Street M15GD, Manchester (UK);Faculty of Agriculture, Laboratory of Ecology and Environmental Protection, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece);Faculty of Agriculture, Laboratory of Ecology and Environmental Protection, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece) |
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| Abstract: | The potential role of soil pH in modulating plant productivity was assessed on the basis of dry mass, harvested in the form of 0.25 m2 quadrats, in two low-productivity upland grasslands of northern Greece subjected to annual factorial nitrogen (N) and phosphorus (P) fertilization (15 g N m-2 year-1 and 10 g P m-2 year-1) over a minimum period of 3 years. It was hypothesized that under these particular conditions, a positive relationship would exist between soil pH and plant productivity and, further, that ... |
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| Keywords: | altitude ecological patterns ecosystems low productivity grasslands temperate |
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