Status of the Southern Carpathian forests in the long-term ecological research network
Autor: | Stefan Leca, Ioan Seceleanu, Marian Oneata, Ovidiu Badea, Corneliu Iacob, Elena Preda, Ion Dumitru, Ion Barbu, Ioan Taut, Gheorghe Guiman, Diana Silaghi, Stefan Neagu, V. Huber, Lucian Dinca, Andrzej Bytnerowicz, Carmen Iacoban, Horia Iuncu |
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Rok vydání: | 2012 |
Předmět: |
Vascular plant
Nitrogen Biodiversity Acid Rain Management Monitoring Policy and Law Trees Ozone Nutrient Air Pollution Precipitation Ecosystem General Environmental Science Ecology biology Romania Phosphorus General Medicine biology.organism_classification Throughfall Pollution Species evenness Environmental science Phytotoxicity Acid rain Environmental Monitoring |
Zdroj: | Environmental Monitoring and Assessment. 184:7491-7515 |
ISSN: | 1573-2959 0167-6369 |
Popis: | Air pollution, bulk precipitation, throughfall, soil condition, foliar nutrients, as well as forest health and growth were studied in 2006-2009 in a long-term ecological research (LTER) network in the Bucegi Mountains, Romania. Ozone (O(3)) was high indicating a potential for phytotoxicity. Ammonia (NH(3)) concentrations rose to levels that could contribute to deposition of nutritional nitrogen (N) and could affect biodiversity changes. Higher that 50% contribution of acidic rain (pH 5.5) contributed to increased acidity of forest soils. Foliar N concentrations for Norway spruce (Picea abies), Silver fir (Abies alba), Scots pine (Pinus sylvestris), and European beech (Fagus sylvatica) were normal, phosphorus (P) was high, while those of potassium (K), magnesium (Mg), and especially of manganese (Mn) were significantly below the typical European or Carpathian region levels. The observed nutritional imbalance could have negative effects on forest trees. Health of forests was moderately affected, with damaged trees (crown defoliation25%) higher than 30%. The observed crown damage was accompanied by the annual volume losses for the entire research forest area up to 25.4%. High diversity and evenness specific to the stand type's structures and local climate conditions were observed within the herbaceous layer, indicating that biodiversity of the vascular plant communities was not compromised. |
Databáze: | OpenAIRE |
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