The Use of Aerial Photography in Mapping Soil Sites

Hills, G. A.

doi:10.5558/tfc26004-1

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…Pre-1970 stand-level investigations by Hills and his colleagues contributed significantly to basic concepts of forest site description (Burger 1972b(Burger , 1977Pierpoint 1981). Their investigations provided some important initial documentation and description of stand-level conditions (Hills 1950(Hills , 1952(Hills , 1954Pierpoint 1962Pierpoint , 1981. In a land-use study of the Glackmeyer Development area in the Northern Clay Belt, Hills and his colleagues (1960) provided a remarkably thorough treatment of forest succession patterns as they relate to the commonly occurring physiographic sites in the area.…”

Section: Stand-level Studiesmentioning

confidence: 99%

The current status of forest site classification in Ontario

Sims¹,

Uhlig²

1992

The Forestry Chronicle

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Forest sites are diagnostic forest-landscape ecosystem units that resource managers must deal with during the planning and implementation stages of management. Forest sites are the basic building blocks for undertaking integrated resource management which weighs wildlife, recreation, environmental impact and various other concerns along with timber harvesting. Consequently, accurate and practical systems for classifying and mapping forest sites are becoming increasingly necessary to organize, communicate and use existing and new management knowledge and experience effectively.Over the past four decades in Ontario, a number of studies and resource surveys have provided important background information on forest sites. Many have considered, to varying extents, the integrative roles of vegetation, soil-site, landform and general climate on forests and forest land. Generally, the emphasis has been on description and classification, with results generating a better understanding of how various forests in different areas develop, both qualitatively and quantitatively, in relation to soil-site or other features of the basic land resource. Some of these studies and surveys have been instrumental in advancing the definitions and understanding of forested ecosystems. Others have provided new information on site dynamics, interrelationships and functions, or have contributed to the science (and art) of site evaluation and classification.This paper briefly summarizes the current status of forest site classification in Ontario. Over time, the role of forest site classification has evolved in response to new technologies and information, and to new emphases and values in resource management. In general, site classification research has become increasingly integrative and quantitative. Some of the important future challenges facing forest site classification in Ontario are briefly discussed. Key words: ecological land classification, forest ecology, forest ecosystem classification, forest management interpretations, forest site classification, land use planning, Ontario.

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Section: Stand-level Studiesmentioning

confidence: 99%

The current status of forest site classification in Ontario

Sims¹,

Uhlig²

1992

The Forestry Chronicle

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“…(Hills, 1952) (b) Air-photograph interpretation of the physiographic sites of the area which the reference area represents. (Burger, 1957;Hills, 1950). (c) Mapping of cover types: (i) present, (ii) stable (climax) (Hills and Brown, 1955).…”

Section: Regions Of Forests and Of Forest Sitesmentioning

confidence: 99%

Regional Site Research

Hills¹

1960

The Forestry Chronicle

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Soil features, such as soil texture, mineral composition and soil moisture, and other features of land, such as topography, vary in their effect on forest growth depending upon regional climate. In Ontario, studies of land-forest relationships are conducted within the framework of site regions. Site regions are regions within which the effectivity of macroclimate is assumed to be relatively uniform since these regions are established through comparing the natural succession of vegetation on similar landforms, rather than by meteorological data. From the standpoint of forestry practice, the most pertinent feature of a site region is that it is an area in which similar responses may be expected from similar natural disturbances and forestry practices within similar combinations of landforms and forest types.Regional site research embraces, within each site region:(a) The establishment of landtypes and the description of the physiographic site types occurring within each landtype.(b) The description of the forest types coinciding with stages of succession within each physiographic site type.(c) The establishment of soil types coinciding with physiographic site types and major vegetation controls; also the establishment of variations in soil types resulting from differences in forest succession and forestry practice.(d) The evaluation of each physiographic site type for producing forest and other crops.Thus the aim of regional site research is (i) to describe the various physiographic conditions occurring in a site region so that foresters and land-use planners may recognize them, and (ii) to provide information regarding forest distribution, forest succession and the capability of these physiographic site types to produce forest and other crops, which information may aid these people in designing silvicultural experiments, in making forest management decisions, or in planning alternative uses of the land.Examples have been drawn from the site regions of Ontario to illustrate the principles and methodology of regional research.

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