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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
07/08/2024 |
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Data da última atualização: |
07/08/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTANA, M. S.; GIONGO, V.; SAMPAIO, E. V. de S. B.; ANDRADE, E. M. de. |
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Afiliação: |
MÔNICA SILVA SANTANA, UNIVERSIDADE FEDERAL DO CEARÁ; VANDERLISE GIONGO, CNPT; EVERARDO VALADARES DE SÁ BARRETTO SAMPAIO, UNIVERSIDADE FEDERAL DE PERNAMBUCO; EUNICE MAIA DE ANDRADE, UNIVERSIDADE FEDERAL DO CEARÁ. |
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Título: |
Do irrigated and rainfed agrosystems change aboveground and root carbon and nitrogen stocks in a semiarid environment? |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Journal of Arid Environments, v. 224, 105223, 2024. |
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Idioma: |
Inglês |
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Notas: |
First online. |
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Conteúdo: |
Determining shoot and root biomass and carbon (C) and nitrogen (N) stocks in different ecosystems is crucial to propose adaptative measures to reduce greenhouse gas emission. Data on systems of semiarid areas are scarce, especially irrigated ones. We compared biomasses of four irrigated (bean, maize, grapevine, and mango) and four rainfed livestock systems (buffel grass, prickly pear, gliricidia and leucaena) with those of a preserved and an open tropical dry forest (Caatinga) used as pasture. Caatinga biomass was estimated by allometry and biomasses of the other systems by the destructive method. Root biomasses were determined in layers down to 100 cm. Mango had the highest aboveground and root biomasses: 34.2 and 91.3 Mg ha- 1. Preserved Caatinga was the second in aboveground biomass: 25.1 Mg ha- 1, compared 9–14.1 Mg ha- 1 of the open Caatinga and permanent crops and 3.0–11.8 Mg ha- 1 of the grass and annual crops. Preserved Caatinga, gliricidia and buffel grass formed the second group in root biomass (23.7–25.1 Mg ha- 1), while all other systems had less than 13.5 Mg ha- 1. Preserved and open Caatinga, annual crops and prickly pear had root:shoot ratios below 1, while the other systems had ratios >1, especially mango (2.7). Most systems had roots concentrated in the 0–15 cm layer, but the permanent crops, except prickly pear, concentrated about half of their roots in deeper layers. C (34.2–46.6%) and N (0.6–3.4%) concentrations varied less than biomasses. Root biomass was the plant factor mostly correlated with soil C and N stocks. Therefore, irrigated crops can accumulate more biomass than the native forest, but substitution by mango led to a severe depletion in soil C and N stocks, and all other systems also lost soil C and N. Management strategies such as green manure and crop diversification should be adopted to maintain plant and soil C and N stocks similar to those of the original vegetation. MenosDetermining shoot and root biomass and carbon (C) and nitrogen (N) stocks in different ecosystems is crucial to propose adaptative measures to reduce greenhouse gas emission. Data on systems of semiarid areas are scarce, especially irrigated ones. We compared biomasses of four irrigated (bean, maize, grapevine, and mango) and four rainfed livestock systems (buffel grass, prickly pear, gliricidia and leucaena) with those of a preserved and an open tropical dry forest (Caatinga) used as pasture. Caatinga biomass was estimated by allometry and biomasses of the other systems by the destructive method. Root biomasses were determined in layers down to 100 cm. Mango had the highest aboveground and root biomasses: 34.2 and 91.3 Mg ha- 1. Preserved Caatinga was the second in aboveground biomass: 25.1 Mg ha- 1, compared 9–14.1 Mg ha- 1 of the open Caatinga and permanent crops and 3.0–11.8 Mg ha- 1 of the grass and annual crops. Preserved Caatinga, gliricidia and buffel grass formed the second group in root biomass (23.7–25.1 Mg ha- 1), while all other systems had less than 13.5 Mg ha- 1. Preserved and open Caatinga, annual crops and prickly pear had root:shoot ratios below 1, while the other systems had ratios >1, especially mango (2.7). Most systems had roots concentrated in the 0–15 cm layer, but the permanent crops, except prickly pear, concentrated about half of their roots in deeper layers. C (34.2–46.6%) and N (0.6–3.4%) concentrations varied less than biomasses. Root biomass wa... Mostrar Tudo |
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Thesagro: |
Biomassa; Raiz. |
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Categoria do assunto: |
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Marc: |
LEADER 02543naa a2200193 a 4500
001 2166321
005 2024-08-07
008 2024 bl uuuu u00u1 u #d
100 1 $aSANTANA, M. S.
245 $aDo irrigated and rainfed agrosystems change aboveground and root carbon and nitrogen stocks in a semiarid environment?$h[electronic resource]
260 $c2024
500 $aFirst online.
520 $aDetermining shoot and root biomass and carbon (C) and nitrogen (N) stocks in different ecosystems is crucial to propose adaptative measures to reduce greenhouse gas emission. Data on systems of semiarid areas are scarce, especially irrigated ones. We compared biomasses of four irrigated (bean, maize, grapevine, and mango) and four rainfed livestock systems (buffel grass, prickly pear, gliricidia and leucaena) with those of a preserved and an open tropical dry forest (Caatinga) used as pasture. Caatinga biomass was estimated by allometry and biomasses of the other systems by the destructive method. Root biomasses were determined in layers down to 100 cm. Mango had the highest aboveground and root biomasses: 34.2 and 91.3 Mg ha- 1. Preserved Caatinga was the second in aboveground biomass: 25.1 Mg ha- 1, compared 9–14.1 Mg ha- 1 of the open Caatinga and permanent crops and 3.0–11.8 Mg ha- 1 of the grass and annual crops. Preserved Caatinga, gliricidia and buffel grass formed the second group in root biomass (23.7–25.1 Mg ha- 1), while all other systems had less than 13.5 Mg ha- 1. Preserved and open Caatinga, annual crops and prickly pear had root:shoot ratios below 1, while the other systems had ratios >1, especially mango (2.7). Most systems had roots concentrated in the 0–15 cm layer, but the permanent crops, except prickly pear, concentrated about half of their roots in deeper layers. C (34.2–46.6%) and N (0.6–3.4%) concentrations varied less than biomasses. Root biomass was the plant factor mostly correlated with soil C and N stocks. Therefore, irrigated crops can accumulate more biomass than the native forest, but substitution by mango led to a severe depletion in soil C and N stocks, and all other systems also lost soil C and N. Management strategies such as green manure and crop diversification should be adopted to maintain plant and soil C and N stocks similar to those of the original vegetation.
650 $aBiomassa
650 $aRaiz
700 1 $aGIONGO, V.
700 1 $aSAMPAIO, E. V. de S. B.
700 1 $aANDRADE, E. M. de
773 $tJournal of Arid Environments$gv. 224, 105223, 2024.
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| 2. |  | GAZZOLA, R.; SOUZA, G. da S. e; MARTINELLI, S. S.; SOUSA, A. A. de; PROENÇA, R. P. da C. Renta de agricultores y agroindustrias cooperados en Santa Catarina, Brasil. Revista Verde de Agroecologia e Desenvolvimento Sustentável, v. 14, n. 1, p. 69-77, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
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