Treesearch

The region' covered by the Forest Survey in the lower South embraces the commercially timbered areas of the Gulf States, Georgia, and parts of Arkansas, Oklahoma, Nissouri, Tennessee, and Kentucky. 17 This region is divided into four subregions, the longleaf-slash pine, the delta-hardwoods, "and two pine-hardwood areas, 'east and west. The longleaf-slash pine area, which is the seat of the naval stores industry, is characterized by forests of longleaf and slash pine, with a varying admixture of hardwoods, cypress, loblolly, and other pines. In the two pine-hardwood subregions the forests,...

The area covered by this report!! lies in the eastern half of Texas and may be called the East Texas post oak belt. It is irregular in outline, approximately 400 miles long and 20 to 80 miles wide, and contains a total land area of 11,661,700 acres, From Lamar County on the north, it ,extends southwest to Atascosa and Bee Counties (see fig, 1), On the east, it is bounded by the East 'fexas pine Survey units and the coastal prairies; on the west, by the bla(Jkland prairies; and on the south, by the brushy plains, The natural limits of the post oak belt extend across the county lines...

Lying west of Birmingham and north of Demopolis, West Central Alabama (Forest survey Unit Alabama No. 4) includes almost 4.5 million acres within the following 9 counties: Bibb, Fayette, Greene, Hale, Lamar, Marion, Perry, Pickens, and Tuscaloosa (map, fig. 1). This distinctly rural area includes only one incorporated city or town with a population of 2,500 people or more (Tuscaloosa, 1930 population 20,700). Of the total population (245,000 in 1930), about 66 percent live on farms, 26 percent in non-farm homes in rural areas, and 8 percent in Tuscaloosa. There are only 36 people per...

Forest survey Unit No. 6 in north Alabama embraces 10 counties that lie almost exclusively in the watershed of the Tennessee River (fig. 2). The unit, containing 4,595,900 acres, extends entirely across the northern part of the State, with its southern boundary roughly parallel to, and about 50 miles south of, the Tennessee State line. The Tennessee River, which enters the unit in the northeast corner and flows through it for 200 miles before swinging northward to enter Tennessee, is highly important to the economy of this area, as it is under intensive development by the Tennessee Valley...

The unit hydrograph principle was first presented in 1932 by Leroy K. Sherman, M. Am. Soc. C. E. Since then it has been developed into a usable method for surface run-off analysis. The most notable advance was the introduction of the distribution graph and pluviagraph in 1934 by Merrill M. Am. Soc. C. E. Although the method has become quite. generally accepted, the engineers and hymologists who have made special studies in this field have suggested that farther research be conducted to determine, more definitely, the limitations in the application of the unit hydrograph. One of the...

Each year forest nurserymen are faced with the problem of estimating the number of seedlings they can ship from their nurseries. Since errors in the estimates may seriously affect the planting programs, during the past 2 years the Southern Forest Experiment Station has been attempting to improve nursery-inventory procedure. The inventory method that appears most promising consists of making two estimates one of the total number of seed­ lings in the entire nursery, or a natural subdivision of it; and another of the percentage of plantable seedlings. With the data from these two estimates,...

Methods which are satisfactory for determining the base-exchange capacity of mineral soils can not be applied indiscriminately for determining the exchange capacity of fresh or decomposed plant residues.

The portion of Arkansas treated in this report is a former flood plain of Mississippi River, through which the Arkansas, the White, the Mississippi, and other rivers have cut new channels and developed a later flood plain at a lower level. The soils and topography differ accordingly on the two sites. The present flood plains, or bottoms, are generally flat; wheareas the earlier flood plains, or terraces, are slightly undulating, and because they are about 10 to 20 feet higher they are usually better drained than the bottoms. Altogether, this area (Forest Survey Unit Arkansas #1) covers...

Southeast Alabama (Forest survey Unit Alabam No. 3) has long been one of the principal agricultural areas of the deep South. since its forests, however, are almost as extensive as its fields, a recent study has been made of the forest resources and wood-products industries of this area to determine how important the yare and how their usefulness may be increased. the area, which includes 21 counties with an aggregate of 9 million acres in the southeast part of the State, extends from the Florida boundary line northward to about the middle of the State, and from Georgia line westward to the...