Congressi Nazionali SISEF

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Presentazione orale

Gentilesca T, Mencuccini M, Ripullone F, Goss S, Borghetti M

Effects of long term soil nitrogen fertilizations on Sitka spruce (Picea sitchensis (Bong) Carr.) plantation ecosystems.

Riassunto: Nitrogen (N) is a basic element for plant nutrition and growth of forest ecosystems in the world. Despite of the great abundance of N in the atmosphere, many ecosystems are N limited, especially temperate and boreal forest ecosystems. On the other hand, where N supply exceeds biological demand, chronic N inputs may cause decline in forest productivity and experience greater mortality, acidification and loss of soil nutrients. Although the effects of N addition on plant physiology have been widely studied in controlled conditions, only few long-term studies have been carried out in forests. The purpose of the present research was to evaluate the effects of repeated N addition on Sitka Spruce (Picea sitchensis (Bong) Carr.) plantation ecosystems. The study has been performed at five different sites in Northern East Scotland on 23 to 31 years-old Sitka Spruce artificial stands subjected to repeated fertilization treatments since plantation up to the age of 16-20 years. Treatments consisted in the supply of N to the soil (as UREA, from 150 to 160 kg of N ha-1 per time), alone or in combination with P, K or both. The results of the effects of soil N fertilizations on soil C stocks, above-ground and ground vegetation biomass, pattern on long-term growth will be discussed. These results will be also compared to the most important N fertilization experiments made in United Kingdom on Sitka Spruce plantations.

Parole Chiave: Nitrogen, Sitka Spruce, Biomass Accumulation, Fertilization

Citazione: Gentilesca T, Mencuccini M, Ripullone F, Goss S, Borghetti M (2011). Effects of long term soil nitrogen fertilizations on Sitka spruce (Picea sitchensis (Bong) Carr.) plantation ecosystems.. In: VIII Congresso Nazionale SISEF “Selvicoltura e conservazione del suolo: la sfida Europea per una gestione territoriale integrata“ (Rende (CS), 04-07 Ottobre 2011), Abstract-book, Contributo #c08.3.4. - [online] URL: https://congressi.sisef.org/?action=paper&id=1442

Dettagli

Congresso VIII Congresso Nazionale SISEF
“Selvicoltura e conservazione del suolo: la sfida Europea per una gestione territoriale integrata”
Rende (CS), 04-07 Ottobre 2011
Collocazione c08.3.4 (#)
Sessione Sessione 03
Moderatore/i Paolo De Angelis, Elena Paoletti
Data Oct 07, 2011
Ora 12:56-12:56
Luogo -
Info Autori
(*): speaker

T Gentilesca*
Italy

M Mencuccini
Italy

F Ripullone
Italy

S Goss
Italy

M Borghetti
Italy