RESOLVING DIFFERENCES IN N CYCLING BETWEEN MORE POLLUTED AND PRISTINE FORESTS USING 15N ISOTOPE DILUTION
CONTROLLING NITROGEN FLOWS AND LOSSES
| dc.creator | Boeckx, Pascal | |
| dc.creator | Godoy Borquez, Roberto Eduardo | |
| dc.creator | Oyarzun Ortega, Carlos Enrique | |
| dc.creator | Van Cleemput, Oswald | |
| dc.date | 2016-12-27T21:50:17Z | |
| dc.date | 2022-06-17T20:37:33Z | |
| dc.date | 2016-12-27T21:50:17Z | |
| dc.date | 2022-06-17T20:37:33Z | |
| dc.date | 2004 | |
| dc.date.accessioned | 2023-08-23T00:31:38Z | |
| dc.date.available | 2023-08-23T00:31:38Z | |
| dc.identifier | 1020989 | |
| dc.identifier | 978-90-76998-43-5 | |
| dc.identifier | 978-90-8686-528-4 | |
| dc.identifier | https://hdl.handle.net/10533/165511 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8355478 | |
| dc.description | Indications are emerging that N cycling differs between pristine and more disturbed or polluted forest ecosystems. In 100 pristine old-growth forest catchments of South Chile, having a low N deposition, N losses between 0.2 and 3.5 kg N ha-1 yr-1 were observed. The DON and DIN drained from these catchments was 20 and 80%, respectively (Perakis & Hedin, 2002). Rainfall was the main factor affecting the DON:DIN los ratio. The contribution of DON to N losses from rorests of more polluted regions of the world, on the ogher hand, is negligible. MacDonald ete al., (2002) showed that in forests of Europe (N deposition 1-60 kg Nha-1 yr-1)the predominant N loss mechanism was NO3 leaching (1-40 kg N ha-1 yr-1). Nitrate formation in N polluted forests seemed to be largely controlled by N input and N enrichment of the forest floor. Organic layer C:N ratios of ca. 25 seem to be crucial to initiate more intense nitrification and subsequent NO3 or losses. It has been suggested that forest soils may possess a substantial biotic or abiotic NO3 NH4+ retention mechanism controlling DON and DIN losses. The exact mechanisms, the capacity and time frame of these alternative N retention processes in forest solis are still unclear. Here we present an initial study comparing N turnover in a pristine and a more polluted forest. | |
| dc.description | FONDECYT | |
| dc.description | 624 | |
| dc.description | FONDECYT | |
| dc.language | spa | |
| dc.publisher | WAGENINGEN ACADEMIC PUBLISHERS | |
| dc.relation | instname: Conicyt | |
| dc.relation | reponame: Repositorio Digital RI2.0 | |
| dc.relation | instname: Conicyt | |
| dc.relation | reponame: Repositorio Digital RI 2.0 | |
| dc.relation | info:eu-repo/grantAgreement/Fondecyt/1020989 | |
| dc.relation | info:eu-repo/semantics/dataset/hdl.handle.net/10533/93479 | |
| dc.relation | https://books.google.cl/books?id=KMgA1bHkTn4C&pg=PA7&lpg=PA7&dq=CONTROLLING+NITROGEN+FLOWS+AND+LOSSES&source=bl&ots=tYVL5a5oMF&sig=AYHh2Yqvc1JefT5uYFQfdJ9fhow&hl=es&sa=X&ved=0ahUKEwi-usKI_cLMAhXBIpAKHeq3AowQ6AEIKjAB#v=onepage&q=CONTROLLING%20NITROGEN%20FLOWS%20AND%20LOSSES&f=false | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.title | RESOLVING DIFFERENCES IN N CYCLING BETWEEN MORE POLLUTED AND PRISTINE FORESTS USING 15N ISOTOPE DILUTION | |
| dc.title | CONTROLLING NITROGEN FLOWS AND LOSSES | |
| dc.type | Capitulo de libro | |
| dc.type | info:eu-repo/semantics/bookPart |