SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Moreira,Geisianny Augusta Monteiro; Vale,Helson Mario Martins do.

ABSTRACT Soils of the Quadrilátero Ferrífero are rich in mineral resources, especially gold and iron. Soil management and mining activities greatly impact soil biology. However, studies addressed to the diversity of microorganisms and their ecological role in the recovery of these areas are scarce. This study aimed to assess the yeast occurrence in soils with natural vegetation (Atlantic Forest, neotropical savanna, and iron outcrop) and areas with anthropogenic modifications (Eucalyptus stand and rehabilitated area) in the Quadrilátero Ferrífero region. We isolated and identified a total of 68 yeast. Partial sequencing of the 26S ribosomal gene revealed the presence of six genera: Saitozyma, Pseudozyma, Meyerozyma, Debaryomyces, Lipomyces, and...

Soil quality indicators in a rhodic kandiudult under different uses in northern Parana, Brazil

Palavras-chave: Diversity; Fungi; Land use; Mining.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100418

Kuwano,Biana Harumi; Knob,Adriana; Fagotti,Dáfila Santos Lima; Melém Júnior,Nagib Jorge; Godoy,Leandro; Diehl,Raquel Cátia; Krawulski,Cristina Célia; Andrade Filho,Galdino; Zangaro Filho,Waldemar; Tavares-Filho,João; Nogueira,Marco Antonio.

Sustainable use of soil, maintaining or improving its quality, is one of the goals of diversification in farmlands. From this point of view, bioindicators associated with C, N and P cycling can be used in assessments of land-use effects on soil quality. The aim of this study was to investigate chemical, microbiological and biochemical properties of soil associated with C, N and P under different land uses in a farm property with diversified activity in northern Parana, Brazil. Seven areas under different land uses were assessed: fragment of native Atlantic Forest; growing of peach-palm (Bactrys gasipaes); sugarcane ratoon (Saccharum officinarum) recently harvested, under renewal; growing of coffee (Coffea arabica) intercropped with tree species; recent...

SOIL QUALITY IN RELATION TO FOREST CONVERSION TO PERENNIAL OR ANNUAL CROPPING IN SOUTHERN BRAZIL

Palavras-chave: Bioindicators; Land use; Metabolic coefficient; Microbial biomass; Soil enzymes; Soil quality.

Ano: 2014

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100005

Balota,Elcio Liborio; Yada,Ines Fumiko Ubukata; Amaral,Higo Furlan; Nakatani,Andre Shigueyoshi; Hungria,Mariangela; Dick,Richard Peter; Coyne,Mark Steven.

Many forested areas have been converted to intensive agricultural use to satisfy food, fiber, and forage production for a growing world population. There is great interest in evaluating forest conversion to cultivated land because this conversion adversely affects several soil properties. We examined soil microbial, physical, and chemical properties in an Oxisol (Latossolo Vermelho distrófico) of southern Brazil 24 years after forest conversion to a perennial crop with coffee or annual grain crops (maize and soybeans) in conventional tillage or no-tillage. One goal was to determine which soil quality parameters seemed most sensitive to change. A second goal was to test the hypothesis that no-tillage optimized preservation of soil quality indicators in...

Phosphorus Forms in Sediments as Indicators of Anthropic Pressures in an Agricultural Catchment in Southern Brazil

Palavras-chave: Land use; Tillage; Coffee; Biological activity; Potential mineralization; Aggregate stability.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401003

Tiecher,Tales; Schenato,Ricardo Bergamo; Santanna,Maria Alice; Caner,Laurent; Santos,Danilo Rheinheimer dos.

ABSTRACT Phosphorus (P) fractionation is a suitable procedure to ascertain P lability in sediments and is able to distinguish sources of P under different soil management practices in a catchment. Brazil is the second largest producer and the largest exporter of tobacco in the world. Inadequate management of cultivated areas exposes the soil to erosion processes, accelerating the transfer of sediment and P to water bodies, which leads to eutrophication. We evaluated the P forms in suspended sediments collected at two rainfall events in the stream of a small catchment in the state of Rio Grande do Sul. The samples were collected upstream and downstream areas in three sub-catchments with different degrees of anthropogenic pressure and in three phases of the...

SOIL ORGANIC MATTER FRACTIONS IN PRESERVED AND DISTURBED WETLANDS OF THE CERRADO BIOME

Palavras-chave: Phosphorus fractionation; Watershed; Nonpoint source pollution; Eutrophication; Land use.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100431

Sousa,Ricardo Fernandes de; Brasil,Eliana Paula Fernandes; Figueiredo,Cícero Célio de; Leandro,Wilson Mozena.

Veredas are humid tropical ecosystems, generally associated to hydromorphic soils and a shallow water table. The soils of these ecosystems are affected by the use of the areas around these veredas. The objective of this study was to determine soil organic matter (SOM) fractions in veredas adjacent to preserved (native savanna) and disturbed environments (agricultural areas and pastures) in the Cerrado biome. Soil samples were collected from the 0-10 and 10-20 cm layers along reference lines drawn along the relief following the upper, middle and lower positions of one of the slopes, in the direction of the draining line of the vereda. The soil analysis determined: total soil OC, total nitrogen and C:N ratio; C and N contents and C:N ratio in particulate and...

Physical quality of an oxisol under different uses

Palavras-chave: Hydromorphic soils; Land use; Particulate fraction; Humic substances; Organic carbon.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100222

Mota,Francisco Ocian Bastos; Ness,Ricardo Luiz Lange; Mota,Jaedson Cláudio Anunciato; Clemente,Celso Augusto; Sousa,Sebastião Cavalcante.

The use of a soil induces changes in the physical properties according to the management, tillage intensity and type of crop. The objective of this work was to measure the alterations of some of the soil physical properties and evaluate the physical quality by the S index, an indicator proposed by Dexter (2004), comparing the land uses: eucalyptus plantations at different ages, grazing pasture, annual crops, and an area of preserved secondary vegetation with an area of preserved native forest (National Forest Araripe - NFA) as control. The study was carried out on an Oxisol on the Fazenda Redenção, in Jardim, State of Ceará, Brazil. The experiment was arranged in a completely randomized design with seven treatments and three replications in the layers...

Physical properties of dystrophic Red Latosol (Oxisol) under different agricultural uses

Palavras-chave: Land use; Soil physical properties; S index; Soil degradation; Araripe Plateau - Brazil.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000600017

Tavares Filho,João; Barbosa,Graziela Moraes de Cesare; Ribon,Adriana Aparecida.

Obtaining information about soil properties under different agricultural uses to plan soil management is very important with a view to sustainability in the different agricultural systems. The aim of this study was to evaluate changes in certain indicators of the physical quality of a dystrophic Red Latosol (Oxisol) under different agricultural uses. The study was conducted in an agricultural area located in northern Paraná State. Dystrophic Red Latosol samples were taken from four sites featuring different types of land use typical of the region: pasture of Brachiaria decumbens (P); sugarcane (CN); annual crops under no-tillage (CAPD); and native forest (permanent conservation area) (control (C)). For each land use, 20 completely randomized, disturbed and...

Growth, water use and efficiency of forage cactus sorghum intercropping under different water depths

Palavras-chave: Land degradation; Land use; Grazing; Sugarcane; No-tillage farming.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300034

AGRIAMBI

Lima,Lucivania R.; Silva,Thieres G. F. da; Jardim,Alexandre M. da R. F.; Souza,Carlos A. A. de; Queiroz,Maria G. de; Tabosa,José N..

ABSTRACT The effects of the forage cactus sorghum configuration and different irrigation depths on the growth, water use and efficiency of the forage cactus production system were investigated in this study. The experiment was conducted in the municipality of Serra Talhada, Pernambuco State, Brazil, between the years 2012 and 2013. Forage cactus was distributed in randomized blocks with factorial scheme and four replicates, in split plots (5 x 2), with five irrigation depths (0, 8.75, 17.5, 26.25 and 35% of the reference evapotranspiration, ET0) and two cropping systems (forage cactus monocropping and forage cactus sorghum intercropping). Crop evapotranspiration was calculated through soil water balance. The ratio between crop and reference...

Paleolimnological studies of Laguna Chica of San Pedro (VIII Region): Diatoms, hydrocarbons and fatty acid records

Palavras-chave: Actual evapotranspiration; Drip irrigation; Land use; Semi-arid region.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000200113

RChHN

URRUTIA,ROBERTO; KOEN,SABBE; CRUCES,FABIOLA; POZO,KARLA; BECERRA,JOSE; ARANEDA,ALBERTO; VYVERMAN,WIM; PARRA,OSCAR.

Diatom, hydrocarbons and fatty acid sedimentary records were used for reconstructing the recent (last 150 years) palaeolimnological history of Laguna Chica of San Pedro (Concepción, VIII Región, Chile). Cluster analyses (Constrained Incremental Sum of Squares) on the diatom data revealed three distinct periods. The first period (1883-1940's) showed a pronounced increase in sedimentation rate and a slight increase in organic matter accumulation. In this period, eutrophic species (Aulacoseira granulata and Staurosira construens) became increasingly dominant. From the 1940s until the 1970s the diatom signal is more equivocal: after the initial decrease in the relative abundance of A. granulata and S. construens their numbers fluctuate without a clear pattern....

Tipo: Journal article

Palavras-chave: Diatoms; Hydrocarbons; Fatty acids; Paleolimnology; Land use.

Ano: 2000

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400014

The economic and environmental impact of trade in forest reserve obligations: a simulation analysis of options for dealing with habitat heterogeneity

Rev. Econ. Sociol. Rural

Chomitz,Kenneth M.; Thomas,Timothy S.; Brandão,Antônio Salazar P..

A tradeable development rights (TDR) program focusing on biodiversity conservation faces a crucial problem: defining which areas of habitat should be considered equivalent. Restricting the trading scope to a narrow area could boost the range of biodiversity conserved but could increase the opportunity cost of conservation. The issue is relevant to Brazil, where TDR-like policies are emerging. Long-standing laws require each rural property to maintain a legal forest reserve (reserva legal) of at least 20%, but emerging policies allow some tradeability of this obligation. This paper uses a simple, spatially explicit model to simulate a hypothetical state-level program. We find that wider trading scopes drastically reduce landholder costs of complying with...

Modelling Beef and Dairy Sectors' Productivities and their Effects on Land Use Change in Brazil

Palavras-chave: Brazil; Conservation; Environment; Land use; Minas Gerais; Tradeable development rights.

Ano: 2005

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032005000400003

Rev. Econ. Sociol. Rural

Harfuch,Leila; Nassar,André Meloni; Zambianco,Wilson Milani; Gurgel,Angelo Costa.

Abstract: This paper aims to develop new methodology for the Brazilian beef and dairy sectors incorporating different levels of productivities in the Brazilian Land Use Model (BLUM), analyzing land use dynamics. Several datasets combinations were used and supply and demand equations were re-estimated. Historical database developed in this paper shows that the livestock sector increased productivity levels per hectare (in both beef and dairy sectors), being an important land releaser for other agricultural uses. Even in frontier regions, the occupation process was followed by productivity increase. When technologies were implemented in BLUM, results show that there were significant differences on land use in 2030, reducing land for pasture compared to BLUM...

SOIL GLYCOSIDASE ACTIVITIES AND WATER SOLUBLE ORGANIC CARBON UNDER DIFFERENT LAND USE TYPES

Palavras-chave: Land use; Beef and dairy; Production technologies; Economic modeling.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032016000200281

R.C. Suelo Nutr. Veg.

Ma,X. Z; Chen,L. J; Chen,Z. H; Wu,Z.J; Zhang,L.L; Zhang,Y.L.

The purpose of this study was to measure the effects of different land uses on soil glycosidase activities (a- and (β-glucosidase, α- and (β-galactosidase), water soluble organic carbon (WSOC) and their relationships. Glycosidase activities showed significant differences under different land use types, the highest one was woodland. (β-glucosidase had the highest activity among the four glycosidases. The activities of these glycosidases decreased with increasing soil depth, being all significantly affected by change of soil depth. Except grassland, the four glycosidase activities intercorrelated each other. Woodland had the highest content of WSOC in the soil depth of 0-20 cm and at increasing soil depth, WSOC content...

Tipo: Journal article

Palavras-chave: Glycosidase activities; Water soluble organic carbon; Land use; Soil depth.

Ano: 2010

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000200001

Aggregate distribution, stability and release of water dispersible clay for two subtropical Oxisols

Scientia Agricola

Azevedo,Antonio Carlos de; Schulze,Darrel Gene.

The behavior of a soil regarding the dispersion and aggregation of its particles is very important for the development of environmental and agricultural soil functions. This study was conducted to determine how aggregate distribution and stability are impacted by land uses and how the release of Water Dispersible Clay (WDC) relates to disaggregation in Oxisols from subtropical Brazil. Samples from two Oxisols, collected at three depths from sites under no-tillage (NT), conventional tillage (CT) and native vegetation (NV) land uses were shaken in 250 mL plastic bottles for intervals up to 27 hours. The mass of aggregates was measured in five size classes ranging from 53 to 2000 µm. Most aggregates larger than 500 mm disappeared during the first 7.5 hours of...

Threats to the Cerrado remnants of the state of São Paulo, Brazil

Palavras-chave: Land use; Disaggregation; Soil tillage; Soil management.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100006

Scientia Agricola

Durigan,Giselda; Siqueira,Marinez Ferreira de; Franco,Geraldo Antonio Daher Correa.

Patches of natural vegetation remaining in landscapes occupied by man are continuously under threat due to the edge effects and also to land use types around these remnants. The most frequent threats and land use types in the vicinity of 81 Cerrado (tropical savanna type) fragments in the State of São Paulo, Brazil, were analyzed in order to verify if the frequency of every type of disturbance to the natural ecosystem depends on the neighboring land use. The hypothesis of the study assumes that environmental threats are correlated with land use around protected areas. From the 81 areas, the most frequent human-induced land cover types around the Cerrado remnants were: pasture (recorded in 78% of the areas), sugarcane plantations (26%), roads (19%), annual...

อิทธิพลของการใช้ที่ดินต่อสมบัติของดินในพื้นที่อ่างขาง จังหวัดเชียงใหม่

Palavras-chave: Savanna; Conservation; Impact; Fragmentation; Land use.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400006

ผลของการพัฒนาบนที่สูงต่อลักษณะอากาศใกล้ผิวพื้นบริเวณดอยอ่างขาง จังหวัดเชียงใหม่

Naruemol Wasuwan.

Thesis (M.Sc. in Agriculture)

Tipo: PhysicalObject

Palavras-chave: Soil properties; Soil conservation; Soil management; Land use; Ang Khang area; Chiang Mai province; การใช้ที่ดิน; การอนุรักษ์ดิน; การจัดการดิน; คุณสมบัติของดิน; พื้นที่อ่างขาง; จ.เชียงใหม่.

Ano: 2008

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5472

การจัดระบบการปลูกพืชร่วมกับข้าวโพดไร่เพื่อประสิทธิภาพการใช้ดินสูงสุดในเขตเกษตรอาศัยน้ำฝน

Raiwin Rattanapatipong.

Thesis (M.Sc. in Environmental Science)

Tipo: PhysicalObject

Palavras-chave: The Royal Agricultural Station Angkhang; Chiang Mai; Doi Angkhang; Climate; Land use; การพัฒนาที่สูง; การใช้ที่ดิน; ลักษณะอากาศ; ลักษณะอากาศใกล้ผิวดิน; สถานีเกษตรหลวงอ่างขาง.

Ano: 1995

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3068

Anna Saimaneerat; Supranee Ngamprasitthi; Sangkhae Nawanich; Sukum Chotechuangmanirat.

6 tables

Palavras-chave: Corn; Maize; Cropping systems; Rainfed area; Land use; Field corn; ข้าวโพด; ระบบการปลูกพืช; การใช้ที่ดิน; เกษตรอาศัยน้ำฝน; ประสิทธิภาพ.

Ano: 2004

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4215

การจัดเขตศักยภาพการปลูกข้าวของประเทศไทย: ทางเลือก โอกาส และความท้าทาย

Comunidade de Odonata (Insecta) em áreas naturais de Cerrado e monocultura no nordeste do Estado de São Paulo, Brasil: relação entre o uso do solo e a riqueza faunística

Chitnucha Buddhaboon; Benjamas Rossopa; Piyaphan Srikum; Sommai Lertna; Waraporn Vongboon; Nopadon Prayoonsook; Duangporn Witoonjit; Yupin Rammanee; Kingkaew Kunket.

Zoning of rice production potential in Thai rice area has been conducted from 2000 to 2013. The objectives of the project were 1) to define the potential of rice area in Thailand in term of soil suitability and productivity, 2) to create map of rice production zoning with appropriate recommendation. Methodology to run the project consisted of secondary data collection, field survey, crop cutting, field experiment, and mapping. The research found that total of 12.6 M ha of rice areas in Thailand it was suitable for rice production about 8.2 M ha. Rice soil was more fertile in the central plain as compared to other region. Most of the farmer grew recommended rice varieties. There were three major groups of growing rice variety, jasmine rice, white rice, and...

Tipo: PhysicalObject

Palavras-chave: Rice; Zoning area; Rice production; Alternative; Land capability; Agricultural potential; Land use; Production technology; Soil fertility; GIS; ข้าว; พื้นที่การจัดเขต; การผลิตข้าว; ศักยภาพการผลิต; การทำแผนที่; การใช้ที่ดิน; ความอุดมสมบูรณ์ของดิน; เทคโนโลยีการผลิต; ข้าวหอม; ข้าวขาว; ข้าวเหนียว; การเพิ่มผลผลิต.

Ano: 2013

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5709

Zoologia

Ferreira-Peruquetti,Patrícia S.; Fonseca-Gessner,Alaíde A..

Stream ecosystems may be strongly influenced in different ways by land use. The effects of land-cover patterns on Odonata community were studied in eight streams and seven lakes-dams of northeastern São Paulo State. The pattern analyzed was monoculture (sugar cane) vs. nature reserve in terms of Odonata species richness and similarity. Eighty-five Odonata species were sampled. The species richness was higher in the monoculture (33 species) than nature reserve (30 species) and 22 species were common to both areas. There was not verified relationship between land use and physical or chemical characteristics of the streams or lakes-dams water. These results suggest that some Odonata species are benefited and other affected by anthropogenic actions, although...

Identification and characterization of deforestation hot spots in Venezuela using MODIS satellite images

Palavras-chave: Cerrado; Diversity; Land use; Odonata; Species richness.

Ano: 2003

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200008

Acta Amazonica

Pacheco,Carlos Eduardo; Aguado,María Inmaculada; Mollicone,Danilo.

Land cover changes over time as a result of human activity. Nowadays deforestation may be considered one of the main environmental problems. The objective of this study was to identify and characterize changes to forest cover in Venezuela between 2005-2010. Two maps of deforestation hot spots were generated on the basis of MODIS data, one using digital techniques and the other by means of direct visual interpretation by experts. These maps were validated against Landsat ETM+ images. The accuracy of the map obtained digitally was estimated by means of a confusion matrix. The overall accuracy of the maps obtained digitally was 92.5%. Expert opinions regarding the hot spots permitted the causes of deforestation to be identified. The main processes of...