Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios
ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchm...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universidade Federal de Lavras
|
| Series: | Ciência e Agrotecnologia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565&lng=en&tlng=en |
| _version_ | 1818615034314489856 |
|---|---|
| author | Diêgo Faustolo Alves Bispo Marx Leandro Naves Silva João José Granate de Sá e Melo Marques Marianne Bechmann Pedro Velloso Gomes Batista Nilton Curi |
| author_facet | Diêgo Faustolo Alves Bispo Marx Leandro Naves Silva João José Granate de Sá e Melo Marques Marianne Bechmann Pedro Velloso Gomes Batista Nilton Curi |
| author_sort | Diêgo Faustolo Alves Bispo |
| collection | DOAJ |
| description | ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands and eucalyptus plantations. Regarding scenario 1, areas under pasture fell into the low (15.1%), medium (45.5%), high (27.1%) and very high (12.3%) P index categories. Environmental Protection Areas on scenario 2 decreased the P loss risk from the scenario 1 in 37.6%. Hence, the model outputs indicate that the reforestation of buffer zones can decrease P loss risk in the case increasing use of P fertilizer. The P index model is a potential support tool to promote judicious use of fertilizers and conservation practices at the Posses catchment. |
| first_indexed | 2024-12-16T16:27:29Z |
| format | Article |
| id | doaj.art-bf0d9149630e48eda8a0ed3553a27f71 |
| institution | Directory Open Access Journal |
| issn | 1981-1829 |
| language | English |
| last_indexed | 2024-12-16T16:27:29Z |
| publisher | Universidade Federal de Lavras |
| record_format | Article |
| series | Ciência e Agrotecnologia |
| spelling | doaj.art-bf0d9149630e48eda8a0ed3553a27f712022-12-21T22:24:42ZengUniversidade Federal de LavrasCiência e Agrotecnologia1981-182941556557910.1590/1413-70542017415012217S1413-70542017000500565Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenariosDiêgo Faustolo Alves BispoMarx Leandro Naves SilvaJoão José Granate de Sá e Melo MarquesMarianne BechmannPedro Velloso Gomes BatistaNilton CuriABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands and eucalyptus plantations. Regarding scenario 1, areas under pasture fell into the low (15.1%), medium (45.5%), high (27.1%) and very high (12.3%) P index categories. Environmental Protection Areas on scenario 2 decreased the P loss risk from the scenario 1 in 37.6%. Hence, the model outputs indicate that the reforestation of buffer zones can decrease P loss risk in the case increasing use of P fertilizer. The P index model is a potential support tool to promote judicious use of fertilizers and conservation practices at the Posses catchment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565&lng=en&tlng=enÍndice Pperda de nutrienteserosão hídricagestão do uso da terraserviços ambientais. |
| spellingShingle | Diêgo Faustolo Alves Bispo Marx Leandro Naves Silva João José Granate de Sá e Melo Marques Marianne Bechmann Pedro Velloso Gomes Batista Nilton Curi Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios Ciência e Agrotecnologia Índice P perda de nutrientes erosão hídrica gestão do uso da terra serviços ambientais. |
| title | Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
| title_full | Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
| title_fullStr | Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
| title_full_unstemmed | Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
| title_short | Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
| title_sort | phosphorus transfer at a small catchment in southeastern brazil distributed modelling in different land use scenarios |
| topic | Índice P perda de nutrientes erosão hídrica gestão do uso da terra serviços ambientais. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565&lng=en&tlng=en |
| work_keys_str_mv | AT diegofaustoloalvesbispo phosphorustransferatasmallcatchmentinsoutheasternbrazildistributedmodellingindifferentlandusescenarios AT marxleandronavessilva phosphorustransferatasmallcatchmentinsoutheasternbrazildistributedmodellingindifferentlandusescenarios AT joaojosegranatedesaemelomarques phosphorustransferatasmallcatchmentinsoutheasternbrazildistributedmodellingindifferentlandusescenarios AT mariannebechmann phosphorustransferatasmallcatchmentinsoutheasternbrazildistributedmodellingindifferentlandusescenarios AT pedrovellosogomesbatista phosphorustransferatasmallcatchmentinsoutheasternbrazildistributedmodellingindifferentlandusescenarios AT niltoncuri phosphorustransferatasmallcatchmentinsoutheasternbrazildistributedmodellingindifferentlandusescenarios |