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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
10/11/2021 |
Data da última atualização: |
10/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BOURGOIN, C.; BETBEDER, J.; LE ROUX, R.; GOND, V.; OSZWALD, J.; ARVOR, D.; BAUDRY, J.; BOUSSARD, H.; LE CLECH, S.; FREITAS, L. J. M. de; DESSARD, H.; LÄDERACH, P.; REYMONDIN, L.; BLANC, L. |
Afiliação: |
CLÉMENT BOURGOIN, CIRAD / CIAT; JULIE BETBEDER, CIRAD / CATIE; RENAN LE ROUX, CIRAD; VALÉRY GOND, CIRAD; JOHAN OSZWALD, Université Rennes 2; DAMIEN ARVOR, Université Rennes 2; JACQUES BAUDRY, BAGAP, INRAE, Institut Agro; HUGUES BOUSSARD, BAGAP, INRAE, Institut Agro; SOLEN LE CLECH, Wageningen University and Research; LUCAS JOSE MAZZEI DE FREITAS, CPATU; HÉLÈNE DESSARD, CIRAD; PETER LÄDERACH, CIAT; LOUIS REYMONDIN, CIAT; LILIAN BLANC, CIRAD. |
Título: |
Looking beyond forest cover: an analysis of landscape-scale predictors of forest degradation in the Brazilian Amazon. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Environmental Research Letters, v. 16, n. 11, 114045, Nov. 2021. |
DOI: |
https://doi.org/10.1088/1748-9326/ac31eb |
Idioma: |
Inglês |
Conteúdo: |
While forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition, configuration and dynamic of land use/cover) on primary forest's aboveground biomass (AGB), spanning from low to highly degraded, in Paragominas municipality (Pará state). We used random forest models to identify the most important landscape predictors of degradation and clustering methods to analyze their distribution and interactions. We found that 58% of the variance of AGB could be explained by metrics reflecting land use practices and agricultural dynamics around primary forest patches and that their spatial patterns were not randomly distributed. Forest degradation is mainly driven by fragmentation effects resulting from old deforestation and colonization events linked with cropland expansion (e.g. soybean and maize) coupled with high accessibility to market. To a lesser extent, degradation is driven by recent and ongoing (1985?2015) deforestation and fragmentation in slash-and-burn agricultural areas, characterized by heterogeneous mosaics of pastures and fallow lands combined with high use of fire. Our findings highlight the potential of landscape-level framework and remotely sensed land cover data for a thorough understanding of the distribution of forest degradation across human-modified landscapes. Addressing these spatial determinants by looking at agricultural dynamics beyond forest cover is necessary to improve forest management which has major implications for biodiversity, carbon and other ecosystem services. MenosWhile forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition, configuration and dynamic of land use/cover) on primary forest's aboveground biomass (AGB), spanning from low to highly degraded, in Paragominas municipality (Pará state). We used random forest models to identify the most important landscape predictors of degradation and clustering methods to analyze their distribution and interactions. We found that 58% of the variance of AGB could be explained by metrics reflecting land use practices and agricultural dynamics around primary forest patches and that their spatial patterns were not randomly distributed. Forest degradation is mainly driven by fragmentation effects resulting from old deforestation and colonization events linked with cropland expansion (e.g. soybean and maize) coupled with high accessibility to market. To a lesser extent, degradation is driven by recent and ongoing (1985?2015) deforestation and fragmentation in slash-and-burn agricultural areas, characterized by heterogeneous mosaics of pastures and fallow lands combined with high use of fire. Our findings highlight the... Mostrar Tudo |
Thesagro: |
Degradação Ambiental; Sensoriamento Remoto; Uso da Terra. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/227627/1/Bourgoin-2021-Environ.-Res.-Lett.-16-114045.pdf
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Marc: |
LEADER 02866naa a2200325 a 4500 001 2135995 005 2021-11-10 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1088/1748-9326/ac31eb$2DOI 100 1 $aBOURGOIN, C. 245 $aLooking beyond forest cover$ban analysis of landscape-scale predictors of forest degradation in the Brazilian Amazon.$h[electronic resource] 260 $c2021 520 $aWhile forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition, configuration and dynamic of land use/cover) on primary forest's aboveground biomass (AGB), spanning from low to highly degraded, in Paragominas municipality (Pará state). We used random forest models to identify the most important landscape predictors of degradation and clustering methods to analyze their distribution and interactions. We found that 58% of the variance of AGB could be explained by metrics reflecting land use practices and agricultural dynamics around primary forest patches and that their spatial patterns were not randomly distributed. Forest degradation is mainly driven by fragmentation effects resulting from old deforestation and colonization events linked with cropland expansion (e.g. soybean and maize) coupled with high accessibility to market. To a lesser extent, degradation is driven by recent and ongoing (1985?2015) deforestation and fragmentation in slash-and-burn agricultural areas, characterized by heterogeneous mosaics of pastures and fallow lands combined with high use of fire. Our findings highlight the potential of landscape-level framework and remotely sensed land cover data for a thorough understanding of the distribution of forest degradation across human-modified landscapes. Addressing these spatial determinants by looking at agricultural dynamics beyond forest cover is necessary to improve forest management which has major implications for biodiversity, carbon and other ecosystem services. 650 $aDegradação Ambiental 650 $aSensoriamento Remoto 650 $aUso da Terra 700 1 $aBETBEDER, J. 700 1 $aLE ROUX, R. 700 1 $aGOND, V. 700 1 $aOSZWALD, J. 700 1 $aARVOR, D. 700 1 $aBAUDRY, J. 700 1 $aBOUSSARD, H. 700 1 $aLE CLECH, S. 700 1 $aFREITAS, L. J. M. de 700 1 $aDESSARD, H. 700 1 $aLÄDERACH, P. 700 1 $aREYMONDIN, L. 700 1 $aBLANC, L. 773 $tEnvironmental Research Letters$gv. 16, n. 11, 114045, Nov. 2021.
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Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
10/08/2001 |
Data da última atualização: |
25/01/2006 |
Autoria: |
NUNES, M. C.; CORREA-FERREIRA, B.S. |
Título: |
Danos causados a soja por adultos de Euschistus heros (F.) (He.: Pentatomidae) sadios e parasitados por Hexacladia smithii Ashmead (Hym.: Encyrtidae). |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
In: SIMPOSIO DE CONTROLE BIOLOGICO, 7., 2001, Pocos de Caldas. [Anais]. Lavras: UFLA, 2001. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
Endoparasitóide gregário; Parasitóide; Percevejo marrom. |
Thesagro: |
Controle Biológico; Inseto; Soja. |
Thesaurus NAL: |
biological control; Insecta; parasitoids; soybeans. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00808naa a2200253 a 4500 001 1456877 005 2006-01-25 008 2001 bl uuuu u00u1 u #d 100 1 $aNUNES, M. C. 245 $aDanos causados a soja por adultos de Euschistus heros (F.) (He.$bPentatomidae) sadios e parasitados por Hexacladia smithii Ashmead (Hym.: Encyrtidae). 260 $c2001 300 $c1 CD-ROM. 650 $abiological control 650 $aInsecta 650 $aparasitoids 650 $asoybeans 650 $aControle Biológico 650 $aInseto 650 $aSoja 653 $aEndoparasitóide gregário 653 $aParasitóide 653 $aPercevejo marrom 700 1 $aCORREA-FERREIRA, B.S. 773 $tIn: SIMPOSIO DE CONTROLE BIOLOGICO, 7., 2001, Pocos de Caldas. [Anais]. Lavras: UFLA, 2001.
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