Optimizing neighborhood-based stand spatial structure: Four cases of boreal forests

Fire is one of the most important factors structuring boreal forests. A spatial simulation model based on a cellular automata approach was built to obtain insights into the spatial pattern of successional stages. Two scenarios are compared: 1. constant flammability and 2. flammability increasing during succession. Spatial structure strongly depends on the specific form of age-dependent flammability. The fine structure of single fires generated by the model is analyzed by five different measures and is in agreement with empirical evidence.

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Observations of the spatial structure of interstellar hydrogen

Symposium - International Astronomical Union ◽

10.1017/s007418090010066x ◽

1967 ◽

Vol 31 ◽

pp. 45-46

Author(s):

Carl Heiles

Keyword(s):

High Resolution ◽

Spatial Structure ◽

Velocity Dispersion ◽

Temperature Variations

High-resolution 21-cm line observations in a region aroundlII= 120°,b11= +15°, have revealed four types of structure in the interstellar hydrogen: a smooth background, large sheets of density 2 atoms cm-3, clouds occurring mostly in groups, and ‘Cloudlets’ of a few solar masses and a few parsecs in size; the velocity dispersion in the Cloudlets is only 1 km/sec. Strong temperature variations in the gas are in evidence.

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Relation between electronic and spatial structure and spin-transition parameters in chain-like Fe(II) compounds

Solid State Ionics ◽

10.1016/s0167-2738(97)00383-4 ◽

1997 ◽

Vol 101-103 (1-2) ◽

pp. 571-577 ◽

Cited By ~ 2

Author(s):

S Erenburg

Keyword(s):

Spatial Structure ◽

Spin Transition ◽

Electronic And Spatial Structure

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Results of Spatial Structure of Atmosphere Radiation in a Spectral Range (1.5–2) µm Research

Light & Engineering ◽

10.33383/2017-061 ◽

2018 ◽

pp. 7-13

Author(s):

Anton M. Mishchenko ◽

Sergei S. Rachkovsky ◽

Vladimir A. Smolin ◽

Igor V . Yakimenko

Keyword(s):

Spatial Structure ◽

Unmanned Aerial Vehicle ◽

Wavelength Range ◽

Spectral Range ◽

Near Ir ◽

Optoelectronic Systems ◽

Aerial Vehicle

Results of experimental studying radiation spatial structure of atmosphere background nonuniformities and of an unmanned aerial vehicle being the detection object are presented. The question on a possibility of its detection using optoelectronic systems against the background of a cloudy field in the near IR wavelength range is also considered.

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