Tree Ecology & Health
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Resilient trees- Dr Yadong Qi has been teaching urban forestry for over two decades. In her latest pursuits, she is exploring tree species’ ability to react and respond to UV and a changing climate
Changes in ultraviolet-B and visible optical properties and absorbing pigment concentrations in pecan leaves during a growing season- UV-B (280-320 nm) and visible (400-760 nm) spectral reflectance, transmittance, and absorptance; chlorophyll content; UV-B absorbing compound concentration; and leaf thickness were measured for pecan (Carya illinoensis) leaves over a growing season (April-October).
Characteristics of UV-B Radiation Tolerance in Broadleaf Trees in Southern USA- Research has indicated that the ozone layer in the earth’s stratosphere has decreased significantly in the last two decades. Such a reduction has led to an increase in solar ultraviolet-B (UV-B) radiation (280 nm −315 nm) striking the earth’s surface.
Comparative Wood Anatomy of Ten Selected Urban Trees in the City of Baton Rouge, Louisiana - Knowledge of tree growth and development is crucial to establishment and management of a healthy urban forest. This paper systematically compared the wood anatomy of ten southern broadleaf tree species grown in the city of Baton Rouge, Louisiana using a new cryostat micro-imaging technique.
Detecting Internal Decay in Trees Using Sonic Tomography Technology- Picus Sonic Tomography Technology is the latest state-of-the-art instrument that can be used to assist arborists, tree care and urban forestry professionals in detection of internal decay in trees. The paper introduces the instrument and illustrates how it works using water oak (Quercus nigra L.) as an example.
Physiological, anatomical, and ecological characteristics of southern live oak- Gas exchanges of sun-exposed and shaded leaves of southern live oak (Quercus virginiana Mill.) were studied monthly from May to September, 2000. Six healthy live oak trees with d.b.h. ranging from 21 to 148 cm on Southern University’s campus in Baton Rouge, LA were selected for the study.
Potentials of Nanotechnology Application in Forest Protection- This joint research project formed by Southern University, Louisiana State University and the USDA Forest Service focuses on applying nanotechnology in forest health and natural resource management.
Benefits of Urban and Community Forests- Trees are a vital part of our community infrastructure. About 80% of the US population lives in urban and suburban areas. Urban and community forests play significant roles in our economy, environment, social well-being, and in our everyday life.



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