Treesearch

I recently read an article about several women who were preparing to sit 80 ft (25 m) above a forest floor in tree-sitting nets to protest a logging operation in Jefferson National Forest (Appalachia). Tree hugging is nothing new in this country. But did environmental activists know we have more forests now than we did in the 1920s? In 1920, we only had 735 million ac (297 million ha) of forest land. Today we have 749 million ac (303 million ha), or 2 ac (0.8 ha) for every single person in America thanks to you and others in the nursery industry.Individual papers from this publication

The Water Erosion Prediction Project (WEPP) Fuel Management (FuMe) tool was developed to estimate sediment generated by fuel management activities. WEPP FuMe estimates sediment generated for 12 fuel-related conditions from a single input. This fact sheet identifies the intended users and uses, required inputs, what the model does, and tells the user how to obtain the model.Other publications in this series

Each decision to suppress fire reinforces a feedback cycle in which fuels continue to accumulate, risk escalates, and the tendency to suppress fires grows (Miller and others, 2003). Existing decision-support tools focus primarily on the negative consequences of fire. This guide outlines a framework managers can use to (1) identify key areas of fire risk and (2) systematically determine where and under what fire weather conditions fire will benefit ecological conditions and management targets while reducing fuels. The Fire Effects Planning Framework (FEPF) sequentially links state-of-the-art...

The survey on values, objectives, beliefs, and attitudes, implemented as a module of the National Survey on Recreation and the Environment, asked over 7,000 respondents nationwide about their values with respect to public lands, objectives for the management of these lands, beliefs about the role the USDA Forest Service should play in fulfilling those objectives, and attitudes about the job the agency has been doing. This report — one of a series of similar regional reports — shows respondents from the Pacific Southwest (USDA Forest Service Region 5: California and Hawaii) are quite...

Sage-grouse (Centrocercus minimus, C. urophasianus) are dependent upon live sagebrush (Artemisia spp.) for all life processes across their entire range. This paper describes habitats used by sage-grouse as documented in the scientific literature. The leaves of sagebrush are eaten by sage-grouse throughout the entire year and comprise 99 percent of their winter diets. Spring (late March through May) habitats are those with intermixed areas of taller (40 to 80 cm) sagebrush with canopy cover of 15 to 25 percent and taller (>18 cm) grass/forb cover of at least 15 percent. Sites used for...

Estimation of the amount of carbon stored in forests is a key challenge for understanding the global carbon cycle, one which remote sensing is expected to help address. However, carbon storage in moderate to high biomass forests is difficult to estimate with conventional optical or radar sensors. Lidar (light detection and ranging) instruments measure the vertical structure of forests and thus hold great promise for remotely sensing the quantity and spatial organization of forest biomass. In this study, we compare the relationships between lidarmeasured canopy structure and coincident...

The remote sensing of fire severity is a noted goal in studies of forest and grassland wildfires. Experiments were conducted to discover and evaluate potential relationships between the characteristics of African savannah fires and post-fire surface spectral reflectance in the visible to shortwave infrared spectral region. Nine instrumented experimental fires were conducted in semi-arid woodland savannah of Chobe National Park (Botswana), where fire temperature (Tmax) and duration (dt) were recorded using thermocouples positioned at different heights and locations. These variables, along...

Open-roof greenhouses provide a natural environment for plant growth when the outdoor weather is suitable and an artificial environment when it is too hot or cold. Opening the roof over the plants increases light intensity, which can help to control the growth habit, flowering, and crop timing. It also reduces electricity costs because expensive fan cooling is not needed.Individual papers from this publication

Afforestation of bottomland hardwood species has increased in the Lower Mississippi River Alluvial Valley (LMRAV) in recent years. Rising demand for hardwood nursery stock and poor performance of some planted seedlings has created concern regarding the quality of seedlings currently available for afforestation in the LMRAV. Furthermore, no definitive guidelines for optimal seedling morphological quality of bottomland hardwoods in the LMRAV have been developed. We measured initial morphology of green ash (Fraxinus pennsylvanica Marsh.) and water oak (Quercus nigra L.) seedlings from 3...

A summary of weed control practices used in seedbeds of deciduous species at Indiana Department of Natural Resources nurseries is presented.Individual papers from this publication