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Articles containing the keyword 'observations'

Category : Article

article id 4825, category Article
Ruutujärjestelmätoimikunta. (1970). Suositus ruutujärjestelmän käyttämisestä biologian eri aloilla havaintopaikkojen ilmoittamisessa. Silva Fennica vol. 4 no. 3 article id 4825. https://doi.org/10.14214/sf.a14614
English title: Recommendation for use of a coordinate system to report observations in all biological disciplines.
Original keywords: luontohavainnot; ilmoitusjärjestelmä; koordinaattijärjestelmä; paikannus
English keywords: nature observations; coordinate system; localization
Abstract | View details | Full text in PDF | Author Info

The paper describes a recommendation of a coordinate system to be used in all biological disciplines to report observations, agreed on by the natural history museums and the scientific societies in Finland. In the recommended coordinate system, the p-axis of the Cartesian coordinate system joins the E 27° longitude. The recommendation describes in detail how the observations are reported using this system.

  • Ruutujärjestelmätoimikunta, E-mail:

Category : Article

article id 7104, category Article
J. P. Norrlin. (1923). Report on the natural historical Journeys in Tornio- Lappmark area in North of Finland. Acta Forestalia Fennica vol. 23 no. 5 article id 7104. https://doi.org/10.14214/aff.7104
Keywords: vegetation; Lapland; flora; travel report; travel account; Finnish Lapland; fjeld; observations
Abstract | View details | Full text in PDF | Author Info

The article begins on the page 82/122 of the PDF file.

The article is a travel report of the author’s travel from Helsinki to north of Finland. Alongside the description of the travel arrangements, it contains observations about the vegetation of the destinations they visited. The observations are divided into section of “spruce region”, “pine region” and “fjeld region”. 

  • Norrlin, E-mail: jn@mm.unknown (email)

Category : Research article

article id 1683, category Research article
Karol Przeździecki, Jarosław Zawadzki, Chris Cieszewski, Pete Bettinger. (2017). Estimation of soil moisture across broad landscapes of Georgia and South Carolina using the triangle method applied to MODIS satellite imagery. Silva Fennica vol. 51 no. 4 article id 1683. https://doi.org/10.14214/sf.1683
Keywords: soil moisture; remotely sensed imagery; satellite observations of forests; triangle method; TVDI; MODIS
Highlights: Temperature vegetation dryness indices were calculated from MODIS satellite imagery to estimate subsurface soil moisture at different depths using the triangle method; Observations were carried out over the vast areas of Georgia and South Carolina, USA, covered with diverse land uses that, included dense forests and agricultural areas; The triangle method may be useful in forestry management applications where the productivity potential of a region and the hydrologic role of forests in that region are of concern.
Abstract | Full text in HTML | Full text in PDF | Author Info

We describe here a study based on analysis of vegetation indices and land surface temperatures, which provides relevant information for estimating soil moisture at regional scales. Through an analysis of MODIS satellite imagery and in situ moisture data, the triangle method was used to develop a conceptual land surface temperature−vegetation index model, and spatial temperature-vegetation dryness index (TVDI) values to describe soil moisture relationships for a broad landscape. This study was situated mainly within two states of the southern United States (Georgia and South Carolina). The total study area was about 30 million hectares. The analyses were conducted using information gathered from the 2009 growing season (from the end of March to September). The results of the study showed that soil moisture content was inversely proportional to TVDI, and that TVDI based on the normalized difference vegetation index (NDVI) had a slightly higher correlation with soil moisture than TVDI based on the enhanced vegetation index (EVI).

  • Przeździecki, Warsaw University of Technology, Faculty of Building Services, Hydro and Environmental Engineering, 00-653, Nowowiejska 20, Warszawa, Poland ORCID http://orcid.org/0000-0002-2275-5223 E-mail: karol_przezdziecki@is.pw.edu.pl (email)
  • Zawadzki, Warsaw University of Technology, Faculty of Building Services, Hydro and Environmental Engineering, 00-653, Nowowiejska 20, Warszawa, Poland ORCID http://orcid.org/0000-0003-2842-0018 E-mail: j.j.zawadzki@gmail.com
  • Cieszewski, University of Georgia, Warnell School of Forestry and Natural Resources, 180 E Green St, Athens, GA 30602, USA ORCID http://orcid.org/0000-0003-2842-4406 E-mail: thebiomat@gmail.com
  • Bettinger, University of Georgia, Warnell School of Forestry and Natural Resources, 180 E Green St, Athens, GA 30602, USA ORCID http://orcid.org/0000-0002-5454-3970 E-mail: pbettinger@warnell.uga.edu

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