Treesearch

This report summarizes data on forest acreage, timber volume, growth, and drain1/ collected by the Southern Forest Survey in Alabama, It is primarily the product of the new Forest Survey of the State, made between 1951 and 1953, but it also draws on the first Forest Survey of 1935-36 to show the changes in forest conditions during the intervening 17 years.21

This report summarizes data on forest acreage, timber volume, growth, and drain collected by the Southern Forest Survey in Alabama, It is primarily the product of the new Forest Survey of the State, made between 1951 and 1953, but it also draws on the first Forest Survey of 1935-36 to show the changes in forest conditions during the intervening 1'7 years.21 In the discussion of highlights that follows, the six Survey regions of the State (fig. 1) have been grouped into three. The West Central, North Central, and North regions are referred to as the North; the two southwestern regions are...

Foresters everywhere are becoming increasingly conscious of the potentialities of tree selection and breeding. In the quest for suitable breeding material, many of the plantations of the past are assuming importance, for each plantation of introduced species may provide information on its adaptability to a certain area and the desirable and undesirable traits which it may manifest in its new environment.

When forest fires burn through southern pine stands, effects on tree crowns range from no observable injury to complete browning and even total con­ sumption of all needles. Mortality and loss of growth that may follow are largely determined by the extent of damage to the foliage, particularly to the buds and twigs. Height of scorch line, as marked by yellowing or browning nee­ dles, is a rough measure vf damage.Four major interacting elements determine whether pine needles are damaged by fire. These are fire intensity, initial vegetation temperature, length of exposure to heat, and lethal...

The Southern Forest Survey, an activity of the Southern Forest Experiment Station, covers the seven States of the Station' territory--Alabama, Arkansas. Louisiana, Mississippi, Oklahoma, Tennessee, and Texas. This Survey is a part of the nation-wide Forest Survey authorized by the McSweeney-McNary Forest Research Act of 1928. Its five-fold purpose is (1) to take inventory of the supply of standing timber and other forest products; (2) to ascertain the rate at which this supply is being increased through growth; (3) to determine the rate at which this supply is being diminished through...

Most Piedmont forests, growing on land worn out by row cropping and abandoned, are low in site quality. They contribute appreciable flood runoff and sediment. Soil structure is poor and nutrient content low. Such improvement as takes place comes generally from litter fall, particularly hsrdwood leaves.

The frequency of forest fires in 13 northeastern states dropped about one-half from 1943 to 1950, exclusive of the fluctuations due to weather. The average downward trend and the annual observations from which the trend is determined are shown graphically in the lower chart on the other side of this page. Each dot on the chart is the ratio of fire occurrence (actual number of fires that burn) to fire expectance (number of fires proportional to measured fire danger). By transforming the data in the upper chart to a ratio, the effects of weather are largely eliminated from comparisons...

This paper deals with a study which had two major purposes: (1) to determine the effectiveness of certain preplanting treatments in permitting pines to come through hardwood competition, and (2) to compare survival and growth rate of planted loblolly and slash pine under the various treatments tested.

The Hitchiti Forest Research Center was established in 1946 by the Forest Service, USDA, to find ways and means of producing more wood in the depleted forests of lower Piedmont Georgia, Alabama, and South Carolina. Sixty percent of the 18-1/2 million-acre territory is in forest. The forest consists principally of even-aged stands of loblolly pine on the uplands and a mixture of oaks, hickories, yellow-poplar, and other hardwoods on the moist sites.

This paper discusses four classes of lumber timming machines applicable to the planning mill. The classification is made according to function as follows: Irregularity or defect removal to increase the value of residual portion. Double end trimming to a length standard acceptable by the trade, trimming to specified length of the higher grades of stock after it has been tied into bundles, and end matching to random length stock to permit fuller utilization of the shorter lengths.