Life Sciences Commons^™

Incorporating Applied Undergraduate Research In Senior To Graduate Level Remote Sensing Courses, Richard Henley, Daniel Unger, David Kulhavy, I-Kuai Hung

Faculty Publications

An Arthur Temple College of Forestry and Agriculture (ATCOFA) senior spatial science undergraduate student engaged in a multi-course undergraduate research project to expand his expertise in remote sensing and assess the applied instruction methodology employed within ATCOFA. The project consisted of performing a change detection land-use/land-cover classification for Nacogdoches and Angelina counties in Texas using satellite imagery. The dates for the imagery were spaced approximately ten years apart and consisted of four different acquisitions between 1984 and 2013. The classification procedure followed and expanded upon a series of concrete theoretical remote sensing principles, transforming the four remotely sensed raster images …

Accuracy Assessment Of Land Cover Maps Of Forests Within An Urban And Rural Environment, Daniel Unger, I-Kuai Hung, David L. Kulhavy

Faculty Publications

Land cover maps of forests within an urban and rural environment derived from high spatial resolution multispectral data (QuickBird) and medium spatial resolution multispectral data (Landsat ETM+ and SPOJ 4) were compared to ascertain whether increased spatial resolution increases map accuracy of forests and whether map accuracy varies across land cover classification schemes. It is commonly assumed that increased spatial resolution would probably increase land cover map accuracy regardless of land cover classification methodology. This study assessed whether that assumption is correct within a rural and an urban environment. Map accuracy for modified National Land Cover Data (NLCD) 2001 Level …

Forestland Controlled By Schools Of Forestry: Characteristics And Management, Charles E. Burkhardt, Thomas J. Straka, Steven H. Bullard

Faculty Publications

Most forestry schools control forestland. Traditionally, the school forest has served as a laboratory for field instruction and research. This article reports on a 1985-86 survey of the 1 candidate and 46 accredited forestry schools in the United States on the ownership, objectives, and management of school forests.

The survey's purpose was to determine the extent and distribution of forestland ownership by forestry schools. The survey addressed how the forestry schools gained control of the land; the objectives of forest management, and how important the school forest was to the teaching, research, and service functions of the university. The importance …

Basic Mathematical Programming Applications To Weed Control In Forestry, Steven H. Bullard, R. H. Richardson, Thomas J. Straka

Faculty Publications

Many studies document herbicide performance for Heed and hardwood control in forestry. Few studies, hoHever, attemp t to develop optima l application strategies. Stand-level optindzation is presently limited due to lack of groHth and yield information. Forest-level optimization is possible, however, and has great potential to aid in planning forestry weed control prog rams.

Mississippi’S Softwood Timber Potential: Private Nonindustrial Influences, Steven H. Bullard, G. H. Weaver, Willem W. S. Van Hees

Faculty Publications

Mississippi's long-run softwood timber potential was estimated for three input situations under a common set of economic and biological assumptions. Economic goals for sustained pine production were estimated using the computer program GASPLY with no restrictions, with private nonindustrial upland hardwoods excluded from type conversion and with private nonindustrial lands excluded from active forest management altogether. Estimated price-quantity equilibria ranged from $301 per thousand cubic feet (MCF) and 966 million cubic feet (MMCF) in the unrestricted case, to $1,226/MCF and 479 MMCF in the example with passive private nonindustrial management. Widely diffel'ing potential goals for pine product-ion highlight the degree …

Mixed-Hardwood Thinning Optimization, Steven H. Bullard

Faculty Publications

Upland hardwood forest types are .by far the most widespread in the United States. Stands of the oak-hickory forest type alone include 109 million acres, 23 percent of the Nation's commercial timberland (U.S. Forest Service 1982) . Many even-aged upland hardwood stands developed on nonindustrial private lands through hardwood invasion after pine stands were harvested. In 1973, half of the hardwood timber in the South was determined to be on upland sites which formerly supported pine stands (Murphy and Knight 1974). Many nonindustrial private landowners passively permit the biologically better adapted hardwoods to increase after the harvest of pines. These …

Stand Age Analysis Of Timber On Mississippi’S Private Nonindustrial Forests, Steven H. Bullard, G. H. Weaver, Willem W. S. Van Hees

Faculty Publications

Most of the current pine timber acreage in Mississippi developed through the reversion of large acreages of agricultural cropland to forestry. Now that cropland retirement has ceased, management practices must provide· for pine regeneration on existing forest lands. Harvesting practices that remove higher-valued pine timber from private, nonindustrial pine lands have created large acreages of poorly stocked, low quality hardwood stands.