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spatial distribution; vegetation cover; spatial data; data analysis; forest inventory; land use; forest resources; Ohio
Abstract:
... One of the goals of the Forest Service, U.S. Department of Agriculture's Forest Inventory and Analysis (FIA) program is large-area mapping. FIA scientists have tried many methods in the past, including geostatistical methods, linear modeling, nonlinear modeling, and simple choropleth and dot maps. Mapping methods that require individual model-based maps to be produced are time and labor intensive. ...
logging; deciduous forests; forest trees; forest succession; land ownership; temperate forests; forest management; wildlife habitats; species diversity; forest inventory; stand composition; forest habitats; forest resources; Indiana; Illinois; Iowa; Ohio; Missouri
Abstract:
... Forests in the Central Hardwood region are undergoing change in terms of area, volume, species composition, and forest structure. These forests are dominated by deciduous species; are increasing their average stand size, volume, and age; and, are experiencing woody plant species replacement as shade intolerant species are being replaced by more shade tolerant species. As changes progress, concerns ...
... An inquiry into the losses of nitrogen from the urine of farm animals was thought desirable because many farmers practice storing the liquid manure in tanks until convenient to apply it to the land. The question of the efficiency of these tanks in preserving the urine has often arisen. In these investigations a study was made as to nitrogen losses from urine (a) exposed to the open air, (b) in Bun ...
... A review of the available data indicates that, within reasonable limits at least, variations in ear characters are rather neutral in their effect upon the yield of dent corn, except when they are definitely linked with special adaptive growth characteristics of the plant. Thus, slender ears with smooth, shallow kernels tend to be produced on earlier maturing, smaller, and less rank growing plants ...
... The data of this investigation of the effects of treatments of acid phosphate and limestone on pasture land were secured by ascertaining the yield and chemical analysis of the total vegetation on small areas (3/4000 acre each) of both treated and untreated parts of the same pasture field. Four fields, each located in a different county, were included in the investigation. Three of the four receive ...
... An organization of community soils leaders has been effected. These leaders meet annually to consider problems and methods of solving them. There has been a notable increase in use of limestone and fertilizer as a result of demonstrations. The legume acreage, particularly that of sweet clover and soybeans, have been very considerably increased. Numerous successful pasture rejuvenation demonstratio ...
... The statistical data reported herein indicated that in Ohio: a decrease in rainfall is accompanied by an increase in yield of wheat; subnormal rainfall is more beneficial in the autumn and early spring, than in the winter or late spring; November and April are the two individual months in which subnormal rainfall appears to be most beneficial; wheat yields are probably depressed in most years by t ...
... The statistical data herein presented indicate that under Ohio conditions an increase in clover yields does, within limits, follow: An increase in total rainfall for the months of April, May, and June. An increase in cloudiness for the months of April, May, and June. An increase in total snowfall. An increase in temperature for the months of March and April and a decrease in temperature for the mo ...
... The light in the old unfertilized pasture measured on four different dates ranged from 76 to 90% less than in the open field. The temperature, measured from August 23 to October 3, showed a range of 21.5 degrees F. in the woods and 34.9 degrees in the open. The temperature in the woods remained lower in the daytime and higher in the night. The evaporation, measured with black spherical atmometers ...