Forest Research: Open Access
Open Access

Institute Fysieke Veiligheid, Arnhem, Netherlands

Biography

Nienke Brouwer is affiliated with Institute Fysieke Veiligheid, Arnhem, Netherlands. He was expertised in the feilds of Teaching, Research And Development. His valuable contributions and discoveries in major area of Landscape Ecology. His international experience includes various programs, contributions and participation in different countries for diverse fields.

Publications

• Research   
  Comparing Canopy Metric Estimations Using Three Conifer Species in the Netherlands
  Author(s): Alan Duncan Hibler, Brian P. Oswald*, Nienke Brouwer, Ester Willemsen and Hans M. Williams
  
  A growing concern associated with fire in The Netherlands is estimating the spread of wildfire, however often the data needed to estimate canopy fires are lacking. The primary parameter required is canopy bulk density (CBD), which requires estimations of canopy gap fraction and leaf area index (LAI). The accuracy of three indirect methods of estimating CBD (a densiometer, hemispherical canopy photographs (HCP), and a LI-COR LAI 2200c plant canopy analyzer) was compared for three common tree species in the Netherlands [Scots pine (Pinus sylvestris L.), black pine (Pinus nigra Arnold) and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)]. No differences between species were found for CBD, but the denser canopies in the Douglas-fir stands did have significantly lower gap fractions than the two pine species. The HCP method produced higher gap fraction estimates than the other two method.. View More»
  DOI: 10. 35248/2168-9776.20.9.238

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