Land Inventory Research Articles

Properties and Management of Forest Soils

PROPERTIES AND DYNAMIC PROCESSES: Introduction Forest Soils and Vegetation Development Soils Associated with the Major Forest Ecosystems The Forest Floor Forest Soil Biology Chemical Properties of Forest Soils Physical Properties of Forest Soils Soil Water and the Hydrological Cycle Soil and Roots Mycorrhizae: Forms and Functions Nutrient Cycling in Forest Ecosystems Soil Properties and Site Productivity MANAGEMENT AND ITS CONSEQUENCES: Forest Land Inventory Soils and Silviculture Management of Nursery and Seed Orchard Soils Management of Problem Soils Tropical Forest Soils Diagnosis and Correction of Nutrient Deficiencies Fertilizer Materials and Application Systems Effects of Anthropogenic Chemicals on Forest Ecosystems Effects of Fire on Soils and Site Intensive Management and Long-Term Soil Productivity Appendixes.

Canada's Land Capability Inventory Program

Abstract The Canada Land Inventory was conducted cooperatively by the federal and provincial governments to provide an information base for a variety of land-use planning and rural development activities, including recent applications in assessment of potential environmental impacts. This inventory program comprised a series of interpretive classifications developed for agriculture, forestry, wildlife, and recreation. The land-capability ratings were based on an evaluation of information available in existing soil-landform and vegetation surveys, or obtained through new biophysical land-classification surveys in previously unsurveyed areas.

EFFECTS OF SOILS AND SEASONAL TIME ON ACCURACY OF CROP IDENTIFICATION IN SOUTHWESTERN ONTARIO FROM 1974 LANDSAT-1 IMAGERY

Imagery from the earth resources satellite, Landsat-1 for the dates of 2 and 20 June, and 8 July 1974, supplemented by airborne photography (1:80,000, and enlarged to 1:3,000), was used to classify crops in Kent County, Ontario. The County was stratified into five areas according to the Canadian Land Inventory Capability classification system. A minimum of three to five fields per crop was selected from each area, using the previous year’s photography, for training prior to 2 June. The percentage of fields accurately identified from the satellite data varied widely among sites, dates and crops. In general, identification accuracy of crops > 80% was achieved by stratifying the area according to soils and using appropriate dates for classifying each crop. Classification accuracy was higher with a layered classifier (developed manually) than with a minimum distance or maximum likelihood classifier. The best date for classifying barley was 2 June (100%); hay, 20 June (87%); winter wheat, 20 June to 8 July (87%); and corn, 8 July (91%). The highest level of accuracy of classification for all crops and dates occurred on the clay loam–clay soils (89%) and the lowest on the sandy loam series (78%). A multiple regression analysis of the values for the average-feature vectors computed from the radiation values of the four bands of Landsat-1 imagery showed that 69% of the variation in the vector values from the 213 fields of the five test sites for 2 and 20 June was attributable to variation in the soil, ground cover, and solar radiation rather than to crop, land class and growth stage.

Correlates of fertility and mortality in low-migration standard metropolitan statistical areas.

Abstract Socioeconomic determinants of fertility and mortality were estimated by regression analysis for 29 low‐migration SMSA's located in the eastern part of the U. S. A low‐migration sample was chosen to maximize length of life history within the regions. Independent variables included per cent nonwhite, gross and net migration, population, density, medical care, welfare, per cent Catholic, education, income, and labor force participation. Density was measured by an index based on the census inventory of urban land. Mortality results include effects of migration on older nonwhite life expectancy, an inverse effect of density on life expectancy for older whites, specific income and educational effects on older life expectancies, different causative factors for e(50) and e(1,50), lack of influence of medical care (except for the nonwhite male), and significant infant mortality multiple correlations only for the nonwhite female. For nonwhite fertility, the inverse influences of per cent nonwhite and net migration 1960–70 were of greatest importance. White fertility showed a negative relationship with medical care and a positive one with nonwhite male e(0).

In defence of Canada Land Inventory

In defence of Canada Land Inventory

An Initial Bibliography on Outdoor Recreational Studies in Canada with Selected United States Re ferences. Canada Land Inventory, Department of Regional Expansion, Ottawa, Ontario, Canada. November 1970. 196p plus index

An Initial Bibliography on Outdoor Recreational Studies in Canada with Selected United States Re ferences. Canada Land Inventory, Department of Regional Expansion, Ottawa, Ontario, Canada. November 1970. 196p plus index

REVIEWS

Book reviewed in this article:NEW ZEALAND LAND INVENTORY SURVEY. OHINEMURI COUNTY. By Department of Lands and Survey.WISE'S NEW ZEALAND GUIDE. 4th Edit., Revised by E. Whittleston.RIVER CONTROL AND DRAINAGE IN NEW ZEALAND. By A. R. Acheson.

Problems in Land Registration and in Filing Environmental Data in Eastern Canada

The two basic problems in the deed registration system — the problem of title and the problem of description — are illustrated by eight case histories. The problem of title is aggravated because the registry office has no responsibility for the legal effect of the documents in its files. As there is, for the most part, no check on the correctness, or the validity, of the contents of documents, it frequently happens that incomplete or erroneous descriptions are filed and these become the cause of further errors and misinterpretations. The descriptions in the case histories and most of the descriptions in Eastern Canada are vitiated by the lack of a control survey system to which the point of commencement and the dimensions can be related and tested for errors. In New Brunswick alone, an estimated 30 man-years of lawyers’ time would be saved each year if the Torrens systein were used in place of the deed registration system. In the Canada Land Inventory system, the information on land use and land capability from some 3,000 map sheets is being transferred to computer files. At the Dominion Bureau of Statistics, the magnetic tape files containing all the information from the 1961 census are readily accessible in an operational system. Yet, the common denominator, the information on the boundaries of the parcels of land on which people live and on which they grow crops, is buried obscurely in land registration and land survey offices instead of being readily available on computer files comparable with those of CLl and DBS. It is concluded that a network of survey control stations and an improved system of land registration are prerequisites for the development of an integrated environmental data bank system. It is also concluded that serious dialogue on the objectives of such a system should begin as soon as possible.

New Approaches to Forest Recreation Planning in Canada

The steadily increasing demand in Canada for opportunities for outdoor recreation will be satisfied largely on forest lands. Foresters must play the lead role in the allocation and development of lands for recreation use, and should be aware of new tools becoming available. Among these is the recreation capability mapping program of the Canada Land Inventory, which will classify all land in the designated area — some 1,000,000 square miles — according to its natural capability to engender and sustain outdoor recreation use. A parallel program is classifying and mapping wildlife capability. In addition, plans are underway for commencement in 1968 of a co-ordinated, searching analysis of the demands for outdoor recreation across Canada. Several federal agencies and the provinces will take part in associated surveys to assess present opportunities for recreation, present use of them and the preferences and habits of users and non-users.In spite of the lack of an evident national direction, and of national leadership in outdoor recreation, informal and semi-formal liaison ensure a reasonable degree of intergovernment and interdepartment co-ordination in the development of these new tools and in making them available to land use planners.

Comments on Canada Land Inventory

Comments on Canada Land Inventory

Forestry Aspects Of The Canadian Land Inventory

Forestry Aspects Of The Canadian Land Inventory

SOIL, SITE AND LAND CLASSIFICATION

Forest management is a kind of land management, and the forester's attention is increasingly drawn to the physical land base from which forestry values derive.Various approaches to the inventory of forest land are discussed: through soil classification with its inherited agronomic background, through site classification whose yardstick is productivity, through classification using few or many environmental factors, and through classification based on morphological features of the land itself.Purpose is implicit in all classifications and different purposes lead to different classifications. It is suggested that forestry purposes are best served by a land classification which initially breaks the landscape pattern into geomorphological parts, each relatively constant as to surface materials. These can be further divided into relatively homogeneous forest-land patches or ecosystem units, the basis for study and prediction of productivity. As a means of reducing complexity, land inventory needs to be placed within a geographic framework of regions or zones.

An Inventory of Land and People

An Inventory of Land and People

Menace of Soil Erosion

No phase of our national life occupies a more dominating position of positive influence on our community, state and national well being than that of combined farming interests, and no national resources or asset outranks in importance our inventory of agricultural lands. The fact is, that the indispensable cropping and grass lands of the country, administered in ownership and operation by sturdy, patriotic and purposeful farmer-citizens, constitute the abiding bulwark of our state and national safety and security. Of momentous importance, therefore, is the protection of this most valuable and basic resource from impoverishment and wastage by unrestrained erosion, if we ever expect to establish a stable foundation upon which to build a permanent farming regime of surer and better economic and social standards. Investigation produces positive evidence that the people of the United States generally are indifferently permitting their sloping farm lands to become depleted of the reproductive topsoil, and then to be further impoverished or destroyed by the relentless action of uncontrolled gullying. This wastage is proceeding in America faster than with any race or people, civilized or barbaric, in the history of the world. Land deterioration has very markedly influenced, and even determined, the actual destinies of nations. It seems conclusive that strong agricultural soils form an essential basis of national greatness and their wise utilization, a sustained national security. Careless, haphazard, erosion-inducing farm practices of tillage and cropping have taken severe toll of our good farm areas, and the alarming situation is that the same inefficient methods are still in general use over most of our highly erosive regions; and there is no widespread concern about it. In the Piedmont section of Georgia and the Carolinas, hardly less than 60 percent of the upland has lost from 4 to 8 inches of its soil

Inventory of Land by the Wis. State Soils Laboratory

Soil Science Society of America JournalVolume B5, Issue 1 p. 40-42 Article Inventory of Land by the Wis. State Soils Laboratory T. J. Dunnewald, T. J. Dunnewald University of WisconsinSearch for more papers by this author T. J. Dunnewald, T. J. Dunnewald University of WisconsinSearch for more papers by this author First published: 01 January 1924 https://doi.org/10.2136/sssaj1924.0361599500B500010010xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. VolumeB5, Issue11924Pages 40-42 RelatedInformation