CONTENTS
Preface .............................................................................................................................
ii
Introduction .....................................................................................................................
1
Ecological land survey approach .................................................................................
1
Fort Greely ecological land survey ..............................................................................
3
Study area ....................................................................................................................
3
Methods ...........................................................................................................................
6
Field survey .................................................................................................................
6
Classification ...............................................................................................................
7
Mapping .......................................................................................................................
10
Results and discussion .....................................................................................................
13
Hierarchial organization of ecosystem components ....................................................
13
Ecotypes ......................................................................................................................
22
Ecosections ..................................................................................................................
44
Ecodistricts ..................................................................................................................
49
Summary and conclusions ...............................................................................................
50
Literature cited .................................................................................................................
60
Appendix A: System for aggregating geomorphoric and vegetation
types into ecotypes ..................................................................................................
65
Appendix B: Ground reference data ................................................................................
70
Appendix C: Accuracy assessment and map verification ................................................
81
Appendix D: Aggregation and simplification of ecotype classification ..........................
83
Abstract ............................................................................................................................
87
ILLUSTRATIONS
Figure
1. Interaction of interrelated state factors that control structure and
function of ecosystems ........................................................................................
2
2. Location of study area and survey transects for the ecological land
survey for Fort Greely .........................................................................................
4
3. Climate at the Big Delta station near Fort Greely ...............................................
5
4. System of hierarchically classifying ecosystem components into
ITUs into ecotypes ...............................................................................................
10
5. Flow diagram of steps used in image processing and classification for
creation of the ecotype map for Fort Greely .......................................................
11
6. Soil patterns used for lithofacies encountered along toposequences
on Fort Greely ......................................................................................................
13
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