Computerized Plant Community Classification


Book Description

Ecological site classification can be subjective, and attempts have been made throughout Canada to develop computer models for the consistent classification of plots. This report describes the application of fuzzy logic technology to ecological land classification data. In this research, investigators translated into a simple fuzzy logic program a classification of the forested portion of the montane subregion of west central Alberta by plant community type (a more detailed level than ecosite). The program was tested, using the FuzzyTECH fuzzy logic software package, on 147 ecological site information system plots compiled by Alberta Environment. The results compare the computerized classification with that of experts, and reasons for discrepancies are identified.
















Classification, Description, and Dynamics of Plant Communities After Fire in the Taiga of Interior Alaska


Book Description

One hundred thirty forests stands ranging in age from 1 month postfire to 200 years were sampled and described by successional series (white spruce and black spruce) and by developmental stage (newly burned, moss-herb, tall shrub-sapling, dense tree, hardwood, and spruce). Patterns of change in the two successional series are described. In addition, 12 mature forest communities are described in quantitative and qualitative terms.




Computer assisted vegetation analysis


Book Description

There are many books and computer programs dealing look ahead rather than pondering the past. This is a with data analysis. It would be easy to count at least a manual of recent views that evolved in the study of hundred, yet few of these would show applications in vegetation. This book is intended to emphasize the new vegetation science. Today in the face of environmental acquisitions which we believe significantly affect the degradation caused by anthropogenic pressures on the future of vegetation analysis: biosphere there is added urgency to study vegetation 1. Vegetation is a 'fuzzy' system, it must be treated as processes and dynamics in order to understand their role such at the set level, where the idea ofconceptualized in regulating the water, oxygen and the carbon cycles, in patterns must drive the research design. relation to global warming and ozone layer depletion. It 2. Vegetation cannot be seen only in the perspective of a is well known that ecology was developed first in vegeta traditional taxonomy based on the species concept; tion studies (see Acot 1989) but after an active period character sets of ecological value must enter into marked by intensive phytoclimatic and synecological consideration and a hierarchical analysis of patterns studies, vegetation science entered in a rather dormant and processes should be the basis of comparisons. period. Other ecological disciplines such as animal popu 3.