|
|
|
| Registros recuperados: 122 | |
|
| |
|
|
| Baitello,João Batista; Pastore,João Aurélio; Aguiar,Osny Tadeu de; Sério,Francisco Corrêa; Silva,Carlos Eduardo F. da. |
| Fez-se o levantamento florístico da vegetação arbórea da floresta mesófila do Parque Estadual do Morro do Diabo, Município de Teodoro Sampaio, Estado de São Paulo (22º30'S, 52º20'W) pelos métodos de quadrantes e parcelas, incluindo as árvores com diâmetro à altura do peito igual ou superior a 10 cm. A utilização dos dois métodos deu-se em função das características fisionômicas, solo e drenagem dos locais amostrados. O método de quadrante envolveu 462 pontos com intervalos de 30 m., e o método de parcelas ca. 26.900 m² (ca. 2,7 ha.). Os parâmetros fitossociológicos serão abordados em futuros trabalhos. Os dados florísticos subsidiaram o reassentamento dos grupos faunísticos, em especial o Leontopithecus chrysopygus Mikan, 1823 (mico-leão-preto), dentro das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forest; Floristic composition; State Park of "Morro do Diabo". |
| Ano: 1987 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061987000300021 |
| |
|
| |
|
| |
|
| |
|
|
| HASHEMI,SEYED A.. |
| Abstract Ecological capability evaluation is referred to as evaluation of potential capability of land and determination of its natural land use. In this paper, ecological capability of Lille Basin in Lahijan was evaluated for afforestation and forest expansion using Geographical Information Systems (GIS). For this purpose, information layers (slope, elevation, geographical directions, temperature, rainfall, humidity, soil type, and canopy cover) were prepared by digitizing the data obtained from concerned organizations. First, the layers were prepared based on coordinate systems and pixel value. Then, they were standardized using fuzzy membership functions. The evaluation criteria were prioritized with regard to expert opinion, and by using multi-criteria... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecological capability; Afforestation; AHP; Fuzzy; Forest. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703761 |
| |
|
|
| Campos,João Batista. |
| The process of land occupation by the state of Paraná practically decimated its forests. Presently, only 7% from a total area of 83.41% is covered by forests. Most of them are now concentrated in the "Serra do Mar" and in the Iguaçu National Park. With regard to forest cover the most critical region is situated in the northwestern of the state with less than 1% of its area covered by forest. This restricted area mainly consists of conservation units and the islands of the high Paraná River floodplain. The present study consists of a spatial and multi-temporal analysis of deforestation and the quantification of the remnant forests on Porto Rico island (22º45'S; 53º15'W), which have their occupation history linked to the colonization process of the region.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photogrammetry; Alluvial forest; Floodplain; Forest. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100013 |
| |
|
|
| Centurion,José Frederico; Beutler,Amauri Nelson; Souza,Zigomar Menezes de. |
| The objective of this study was to assess the physical attributes of a kaolinitic oxisol, medium texture (Haplustox) and an oxidic oxisol, clayey (Eutrustox) under different usage systems, localized in the region of Jaboticabal, SP, Brazil. The usage systems were sugarcane, cotton and forest. Parameters such as soil bulk density, total porosity, macro and microporosity at the depths of 0.0-0.1; 0.1-0.2; 0.2-0.3, and 0.3-0.4 m were evaluated. Haplustox showed greater bulk density and smaller total porosity, macro and microporosity. The usage increased the bulk density in 0.0-0.3 m depth, with greater effects on the kaolinitic oxisol, mainly in 0.1-0.2 m depth in the areas cultivated with sugarcane. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sugarcane; Cotton; Forest; Mineralogy; Porosity; Bulk density. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500007 |
| |
|
| |
|
| |
|
|
| Albuquerque,Carlos Juliano Brant; Silva,Sérgio Macedo; Luz,José Magno Queiroz; Zandonadi,César Henrique. |
| ABSTRACT: The objective was to estimate the wood yield and essential oil content in three clones of eucalyptus that were planted in four contrasting arrangements and intercropped with sorghum. Eucalyptus clones MA2001 (Eucalyptus camaldulensis x E. tereticornis), A144 (Eucalyptus urophylla x E. grandis), and GG100 (Eucalyptus urophylla x E. grandis), were planted in single rows (10x2m), double rows (2x3+15m and 2x3+20m); and, triple rows (2x3x2+10m) in a randomized, complete block design experiment with four replicates. Our results demonstrated that planting spacing did not influence the essential oil yield or diameter at breast height in the clones. However, higher density plantings were shown to result in higher fresh weight of branches and leaves per... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Row spacings; Clones; Forest; Integrated crop-livestock-forestry system (ICLF). |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100301 |
| |
|
|
| Barrales Brito, Edgar. |
| El mantillo y horizontes de fermentación (CF) es un reservorio dinámico de carbono (C) en suelos forestales. Las metodologías que cuantifican la emisión de CO2 por la descomposición son escasas y requieren periodos largos de medición. Se requieren métodos para poder generar información de la emisión de CO2 de éstas capas orgánicas en tiempos cortos de medición. Los objetivos fueron: generar un protocolo para la medición de la emisión de CO2 por la descomposición de mantillo y CF con un respirómetro manométrico (OxiTop ®). Medir los reservorios de C de mantillo y CF de bosques con diferentes condiciones. Medir la emisión de CO2 del mantillo y CF y las tasas de descomposición con un respirómetro. Analizar las características químicas de los mantillos y... |
|
Palavras-chave: Biogeoquímica; Emisión de CO2; Respirometría; Materia orgánica; Bosques; Biogeochemistry; CO2 emissions; Respirometry; Organic matter; Forest; Edafología; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2096 |
| |
|
|
| Rojas Serrano, Coral. |
| En este estudio se analiza la forma en que habitantes de Santa Catarina Lachatao, comunidad oaxaqueña gobernada por instituciones indígenas autónomas, conciben, manejan y dan significado al bosque, con el que reproducen un modo de vida agrícola, moldeado por cambios históricos en la economía local, nacional e internacional. Se explica a partir de las teorías de la “acción colectiva” y la “agroecología feminista”, la manera en que la comunidad de estudio se inserta en el sistema económico global, defendiendo una manera propia de manejo forestal, con aspectos positivos y negativos para el desarrollo sustentable. El bosque se concibe como un territorio socialmente construido, valorizado de manera instrumental, social y cultural por la población. Es un espacio... |
|
Palavras-chave: Acción colectiva; Bosque; Género; Gestión comunitaria; Territorio; Community management; Collective action; Forest; Gender; Territory; Estrategias para el Desarrollo Agrícola Regional; EDAR; Doctorado. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2264 |
| |
|
|
| Monroy Romero, Alberto. |
| El sobre pastoreo causa la compactación del suelo y pérdida de la vegetación y cuando es insuficiente la biomasa vegetal, se suele invadir bosques o selvas en búsqueda de alimento para el ganado lo que deteriora los ecosistemas. Como una alternativa surge el pastoreo con enfoque holístico (PH) en el que se favorece la productividad animal sin afectar el entorno. Por ello, en el presente estudio se evaluó de febrero-2008 a enero-2009 el PH en bosque de encino con una manada mixta de equinos, bovinos, ovinos, caprinos y porcinos y su efecto sobre la fertilidad química edáfica, la vegetación nativa y la productividad del ganado. Se colectaron muestras de suelo (99 en PH y 102 sin pastoreo) a 0-5 cm, 5-10 cm y 10-20 cm de profundidad y <5%, 5-15%, 15-30% y... |
|
Palavras-chave: Pastoreo; Holístico; Manada mixta; Bosque; Grazing; Holistic; Mixed herd; Forest; Edafología; Doctorado. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/627 |
| |
|
| |
|
|
| Ango, Tola Gemechu; Department of Human Geography, Stockholm University; tola.gemechu@humangeo.su.se; Senbeta, Feyera; Center for Environment and Development Studies, College of Development Studies, Addis Ababa University ; feyeras@yahoo.com; Hylander, Kristoffer; Department of Ecology, Environment and Plant Sciences, Stockholm University; Kristoffer.Hylander@botan.su.se. |
| Farmers’ practices in the management of agricultural landscapes influence biodiversity with implications for livelihoods, ecosystem service provision, and biodiversity conservation. In this study, we examined how smallholding farmers in an agriculture-forest mosaic landscape in southwestern Ethiopia manage trees and forests with regard to a few selected ecosystem services and disservices that they highlighted as “beneficial” or “problematic.” Qualitative and quantitative data were collected from six villages, located both near and far from forest, using participatory field mapping and semistructured interviews, tree species inventory, focus group discussions, and observation. The study showed that... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Agricultural landscape; Biodiversity; Ecosystem services and disservices; Ethiopia; Farmer practices; Forest; Gera; Trees. |
| Ano: 2014 |
|
| |
|
| |
|
|
| Hein, Lars; Department of Environmental Sciences, Wageningen University; lars.hein@wur.nl. |
| Eliciting the economic benefits provided by protected areas is important in order to ensure that they are properly considered in policy and decision making. There are relatively few studies that provide a comprehensive overview of the economic benefits provided by European forest ecosystems, in spite of the large share of forests in the protected area system in most countries. An economic valuation of the ecosystem services supplied by the Hoge Veluwe forest in the Netherlands is presented. The Hoge Veluwe forest is one of the largest and most well-known protected areas in the country. The services included in the study are wood production, supply of game, groundwater recharge, carbon sequestration, air filtration, recreation, and nature conservation. A... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Ecosystem services; Europe; Forest; Hoge Veluwe forest; Protected area; Valuation. |
| Ano: 2011 |
|
| |
|
| |
|
|
| Tarigan, Suria; Soil and Natural Resources Management, Bogor Agricultural University, Indonesia; surya.tarigan@yahoo.com; Agusta, Herdhata; Agronomy and Horticulture, Bogor Agricultural University, Indonesia; agusta@gmx.at; Gunawan, Dodo; Center of Climate Change and Air Quality, Agency for Meteorology, Climatology and Geophysics, Jakarta, Indonesia; dodogunawan88@gmail.com; Hein, Jonas; Department for Environmental Policy and Natural Resource Management, German Development Institute, Bonn, Germany; Jonas.Hein@die-gdi.de; Hendrayanto, ; Forest Management Department, Faculty of Forestry, Bogor Agricultural University, Indonesia; hendrayanto@gmail.com. |
| Conversions of natural ecosystems, e.g., from rain forests to managed plantations, result in significant changes in the hydrological cycle including periodic water scarcity. In Indonesia, large areas of forest were lost and extensive oil palm plantations were established over the last decades. We conducted a combined social and environmental study in a region of recent land-use change, the Jambi Province on Sumatra. The objective was to derive complementary lines of arguments to provide balanced insights into environmental perceptions and eco-hydrological processes accompanying land-use change. Interviews with villagers highlighted concerns regarding decreasing water levels in wells during dry periods and increasing fluctuations in stream flow between... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Eco-hydrology; Environmental perception; Erosion; Evapotranspiration; Forest; Land-use change; Runoff; Rural water supply; Streamflow; Transpiration. |
| Ano: 2016 |
|
| |
| Registros recuperados: 122 | |
|
|
|
