Accession Number : ADA368158


Title :   An Ecological Land Survey for Fort Wainwright, Alaska,


Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH


Personal Author(s) : Jorgenson, M. T. ; Roth, Joanna E. ; Raynolds, Martha K. ; Smith, Michael D. ; Lentz, Will


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a368158.pdf


Report Date : SEP 1999


Pagination or Media Count : 92


Abstract : An ecological land survey (ELS) of Fort Wainwright land was conducted to map ecosystems at three spatial scales to aid in the management of natural resources. In an ELS, an attempt is made to view landscapes not just as aggregations of separate biological and earth resources, but as ecological systems with functionally related parts that can provide a consistent conceptual framework for ecological applications. Field surveys at 109 sites along 11 toposequences, and at an additional 131 ground-reference locations, were used to identify relationships among physiography, geomorphology, hydrology, permafrost, and vegetation. The association among ecosystem components also revealed effects of fire and geomorphic processes, such as groundwater discharge, floodplain development, permafrost degradation, and paludification. Ecosystems were mapped at three spatial scales. Ecotypes (1:50,000 scale), delineated areas with homogenous topography, terrain, soil, surface-form, hydrology, and vegetation. Ecosections (1:100,000 scale) are homogeneous with respect to geomorphic features and water regime and, thus, have recurring patterns of soils and vegetation. Ecodistricts (1:500,000) are broader areas with similar geology, geomorphology, and physiography. Development of the spatial database within a geographic information system will facilitate numerous management objectives such as wetland protection, integrated-training-area management, permafrost protection, wildlife management, and recreational area management.


Descriptors :   *NATURAL RESOURCES , *SURVEYS , *ECOSYSTEMS , *RESOURCE MANAGEMENT , *MAPPING , *LAND AREAS , *ECOLOGY , DATA BASES , SPATIAL DISTRIBUTION , MANAGEMENT , INFORMATION SYSTEMS , DEGRADATION , BIOLOGY , WATER , ALASKA , TERRAIN , TOPOGRAPHY , HYDROLOGY , GEOLOGY , GROUND WATER , SOILS , SCALE , PROTECTION , PATTERNS , MAPS , GEOMORPHOLOGY , WETLANDS , VEGETATION , WILDLIFE , RECREATION , GEOGRAPHY , FIELD CONDITIONS , FLOOD PLAINS , HOMOGENEITY , PERMAFROST.


Subject Categories : ECOLOGY
      CARTOGRAPHY AND AERIAL PHOTOGRAPHY
      GEOGRAPHY


Distribution Statement : APPROVED FOR PUBLIC RELEASE