Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 4
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

High-resolution images of forest areas taken by drone or satellite, further integrated with airborne and terrestrial laser scanning data, can provide early warning of damage – even of individual trees afflicted by pests.
Go to article

Authors and Affiliations

Paweł Strzeliński
1

  1. Faculty of Forestry and Wood Technology, Poznań University of Life Sciences
Download PDF Download RIS Download Bibtex

Abstract

Premises for the construction of balance equations of water reserves in the saturation zone of forest soil are presented in this paper. Changes of soil water reserves are dealt with as an effect of the atmosphere-tree stand-soil balance at the assumption of constant ground water flow and negligibly small losses for infiltration down the soil profile below saturation zone. These assumptions are met in permeable lowland forest soils, particularly in areas where the aquifer is situated on relatively shallow impermeable substratum. Then, for snow-free periods, it is possible to: 1) combine the increment of soil water reserves with precipitation above tree crowns and with plant and litter interception and 2) combine the losses of soil water reserves with plant transpiration and evaporation from the soil surface. The periods of increments and losses of soil water reserves are determined from limnigraph records of ground water table depth in piesometers. Examples are given in the paper of equations identified by long term data from 13 soil profiles localised in pine forests on Pleistocene floodplain of the Dunajec River. The data included: ground water table depth, physical properties of grounds in soil profiles, and hydro-climatic conditions. The equations combine increments and losses of water reserves in the saturation zone with rainfall and deficits of air humidity measured on a midforest meadow.

Go to article

Authors and Affiliations

Józef Suliński
Krzysztof Owsiak
Download PDF Download RIS Download Bibtex

Abstract

The article was created as a result of the work TECHMATSTRATEG 1 program “Modern Material Technologies” as part of the project with the acronym INNOBIOLAS entitled “Development of innovative working elements of machines in the forestry sector and biomass processing based on high-energy surface modification technologies of the surface layer of cast elements”; agreement No. TECHMATSTRATEG1/348072/2/NCBR/2017.
The article discusses the procedure for selecting casting materials that can meet the high operational requirements of working tools of mulching machines: transfer of high static and dynamic loads, resistance to tribological wear, corrosion resistance in various environments. The mulching process was briefly described, then the alloys were selected for experimental tests, model alloys were made and perform material tests were carried out in terms of functional and technological properties. The obtained results allowed to select the alloy where the test castings were made.
Go to article

Authors and Affiliations

Z. Pirowski
1
ORCID: ORCID
A. Bitka
1
ORCID: ORCID
M. Grudzień-Rakoczy
1
ORCID: ORCID
M. Małysza
1
ORCID: ORCID
S. Pysz
1
ORCID: ORCID
P. Wieliczko
1
ORCID: ORCID
D. Wilk-Kołodziejczyk
1 2
ORCID: ORCID

  1. Center of Casting Technology, Łukasiewicz Research Network – Krakow Institute of Technology Contribution, Poland
  2. AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30. 30-059 Kraków, Poland

This page uses 'cookies'. Learn more