997 resultados para vegetation survey
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We describe a new online database, named HispaVeg, which currently holds data from 2663 vegetation plots of Spanish woodlands, scrublands and grasslands. Unlike other similar databases, a detailed description of the structure is stored with the floristic data of each plot (i.e., number and physiognomy of the vertical layers, cover values for each layer).Most of the vegetation plots are large rectangles (400 to 2000 square meters) with an average of 34 species per plot. The survey dates range from 1956 to present, with most of the records between 1964 and 1994. The elevation of the plots ranges from 0 to 2880, with most of the plots between 300 and 1500 m. HispaVeg is freely available to the scientific community. Users can query the online database, view printable reports for each plot and download spreadsheet-like raw data for subsets of vegetation plots.
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CO2 capture and storage (CCS) projects are presently developed to reduce the emission of anthropogenic CO2 into the atmosphere. CCS technologies are expected to account for the 20% of the CO2 reduction by 2050. Geophysical, ground deformation and geochemical monitoring have been carried out to detect potential leakage, and, in the event that this occurs, identify and quantify it. This monitoring needs to be developed prior, during and after the injection stage. For a correct interpretation and quantification of the leakage, it is essential to establish a pre-injection characterization (baseline) of the area affected by the CO2 storage at reservoir level as well as at shallow depth, surface and atmosphere, via soil gas measurements. Therefore, the methodological approach is important because it can affect the spatial and temporal variability of this flux and even jeopardize the total value of CO2 in a given area. In this sense, measurements of CO2 flux were done using portable infrared analyzers (i.e., accumulation chambers) adapted to monitoring the geological storage of CO2, and other measurements of trace gases, e.g. radon isotopes and remote sensing imagery were tested in the natural analogue of Campo de Calatrava (Ciudad Real, Spain) with the aim to apply in CO2 leakage detection; thus, observing a high correlation between CO2 and radon (r=0,858) and detecting some vegetation indices that may be successfully applied for the leakage detection.
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This layer is a georeferenced raster image of the historic paper map entitled: Survey of the Mississippi River : made under the direction of the Mississippi River Commission : chart no. 76, projected from a trigonometrical survey made by the U.S. Coast Survey in 1874. It was published by the Mississippi River Commission ca. 1895. Scale 1:10,000. Covers the City of New Orleans and adjacent portions of Jefferson and St. Bernard Parishes. This layer is image 1 of 4 total images of the four sheet source map, representing the northeast portion of the map. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Louisiana State Plane Coordinate System, South NAD83 (in Feet) (Fipszone 1702). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, railroads, canals, drainage, vegetation/ground cover, land ownership in outlying areas, selected public, private, and industrial buildings, parks, cemeteries, Parish boundaries, ferry routes and more. Relief shown by contours. Detailed depths of the Mississippi River shown with soundings and dates of survey, and survey control points. River banks and bottom soil types shown. Includes index chart, list of authorities, and notes. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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This layer is a georeferenced raster image of the historic paper map entitled: Survey of the Mississippi River : made under the direction of the Mississippi River Commission : chart no. 76, projected from a trigonometrical survey made by the U.S. Coast survey in 1874. It was published by the Mississippi River Commission ca. 1895. Scale 1:10,000. Covers the City of New Orleans and adjacent portions of Jefferson and St. Bernard Parishes. This layer is image 2 of 4 total images of the four sheet source map, representing the southeast portion of the map. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Louisiana State Plane Coordinate System, South NAD83 (in Feet) (Fipszone 1702). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, railroads, canals, drainage, vegetation/ground cover, land ownership in outlying areas, selected public, private, and industrial buildings, parks, cemeteries, Parish boundaries, ferry routes and more. Relief shown by contours. Detailed depths of the Mississippi River shown with soundings and dates of survey, and survey control points. River banks and bottom soil types shown. Includes index chart, list of authorities, and notes. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
Resumo:
This layer is a georeferenced raster image of the historic paper map entitled: Survey of the Mississippi River : made under the direction of the Mississippi River Commission : chart no. 76, projected from a trigonometrical survey made by the U.S. Coast survey in 1874. It was published by the Mississippi River Commission ca. 1895. Scale 1:10,000. Covers the City of New Orleans and adjacent portions of Jefferson and St. Bernard Parishes. This layer is image 3 of 4 total images of the four sheet source map, representing the southwest portion of the map. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Louisiana State Plane Coordinate System, South NAD83 (in Feet) (Fipszone 1702). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, railroads, canals, drainage, vegetation/ground cover, land ownership in outlying areas, selected public, private, and industrial buildings, parks, cemeteries, Parish boundaries, ferry routes and more. Relief shown by contours. Detailed depths of the Mississippi River shown with soundings and dates of survey, and survey control points. River banks and bottom soil types shown. Includes index chart, list of authorities, and notes. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
Resumo:
This layer is a georeferenced raster image of the historic paper map entitled: Survey of the Mississippi River : made under the direction of the Mississippi River Commission : chart no. 76, projected from a trigonometrical survey made by the U.S. Coast survey in 1874. It was published by the Mississippi River Commission ca. 1895. Scale 1:10,000. Covers the City of New Orleans and adjacent portions of Jefferson and St. Bernard Parishes. This layer is image 4 of 4 total images of the four sheet source map, representing the northwest portion of the map. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Louisiana State Plane Coordinate System, South NAD83 (in Feet) (Fipszone 1702). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, railroads, canals, drainage, vegetation/ground cover, land ownership in outlying areas, selected public, private, and industrial buildings, parks, cemeteries, Parish boundaries, ferry routes and more. Relief shown by contours. Detailed depths of the Mississippi River shown with soundings and dates of survey, and survey control points. River banks and bottom soil types shown. Includes index chart, list of authorities, and notes. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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This report summarizes the impact of Hurricane Allen (August 1980) on dune configuration, sand accretion or erosion, and changes in the vegetation on north Padre Island. Four experimental foredunes, the result of grass plantings from 1969 to 1973, and an unplanted control section were monitored in 1975-1977 and also in 1981. The 1981 posthurricane data were compared where possilbe, with the previous studies. Foredune elevation surveys were completed in March 1981; accompanying vegetation transects were made in July 1981. Hurrican Allen causes erosion of the dune face of all the experimental dunes, but caused a breach in only one dune. The beach elevations had returned to approximately prehurricane heights by the time the area was resurveyed. The unplanted control dune provided little resistance to waves generated by the storm and a large quantity of sand was deposited inland.
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"U.S. Geological Survey, U.S. Department of the Interior"--P. [1].
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Cover title.
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"Report to Commonwealth Edison Company, Chicago."--Cover.
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"Aquatic Biology technical series 1983(1)"--Cover.
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"With the assistance of the Public Works and Community Development Departments, City of Highland Park, Illinois."
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Ink on linen. Elevations, location of drainage tiles, buildings and vegetation. Includes some penciled lines and notes. 94 cm. x 80 cm. Scale: 1"= 50' [Marion College] [from photographic copy by Lance Burgharrdt]
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Black and red ink on linen. Elevations, topographical lines, location of vegetation, buildings and drainage tiles; locations of (proposed?) gardens, walkways, ponds, stables, etc. penciled in. 92 cm. x 83 cm. Scale: 1" = 50'. [Marion College] [from photographic copy by Lance Burgharrdt]