The Productivity and Sustainability of Southern Forest Ecosystems in a Changing Environment

1998. Auflage 1998
ISBN: 978-0-387-94851-5
Verlag: Springer

Buch, Englisch, Band 128, 892 Seiten, Gewicht: 1420 g

Reihe: Ecological Studies

In conclusion, current-year, first-flush foliage of branches grown in 525,. d 1- 1 and 700 J. Lll-I of carbon dioxide had much greater rates of Pm ax compared to the P max of foliage grown in 350 J. Lll- I carbon dioxide. These findings are similar to other long-term field studies with loblolly pine (Teskey, 1995; Murthy, 1995). Elevated carbon dioxide concentration was also significantly affected the G, max however, higher rates were only found at the 525 J. Ll 1-I carbon dioxide con­ centration. Generally the total chlorophyll content decreased as the carbon dioxide concentration was increased. The data presented here represent first-year responses to the carbon dioxide and cultural treatments. This experiment will continue to determine whether increased maximum net photosynthetic rate resulting from elevated carbon dioxide will persist over the life of the foliage and over an anticipated greater range of moisture and nutrient availability than existed during the first year of the study. In addition to this determination, evidence will also be collected to test for the possibility of downward acclimation of photosynthesis by foliage exposed to long-term ele­ vated carbon dioxide concentrations. Detailed phenology measurements of branches and whole trees are expected to further the knowledge of how loblolly pine trees growing at the edge of the natural range respond to variations in carbon dioxide concentration, water, and nutrient supply.

Zielgruppe

Research

Autoren/Hrsg.

Mickler, Robert

Fox, Susan

Fachgebiete

• Technische Wissenschaften Umwelttechnik | Umwelttechnologie Luftreinhaltung
• Geowissenschaften Umweltwissenschaften Umweltverschmutzung, Umweltkriminalität, Umweltrecht
• Naturwissenschaften Biowissenschaften Biowissenschaften Ökologie
• Naturwissenschaften Agrarwissenschaften Ackerbaukunde, Pflanzenbau Forstwirtschaft, Forstwissenschaft
• Naturwissenschaften Biowissenschaften Biowissenschaften Naturschutzbiologie, Biodiversität
• Geowissenschaften Umweltwissenschaften Angewandte Ökologie
• Naturwissenschaften Agrarwissenschaften Agrarwissenschaften
• Naturwissenschaften Biowissenschaften Biowissenschaften Terrestrische Ökologie
• Naturwissenschaften Biowissenschaften Biowissenschaften Meeres- und Süßwasserökologie
• Naturwissenschaften Biowissenschaften Botanik Pflanzenökologie
• Geowissenschaften Umweltwissenschaften Umweltüberwachung, Umweltanalytik, Umweltinformatik

Inhaltsverzeichnis

Section 1: An Introduction to Southern Forests in a Changing Environment; Section 2: Global Change Impacts on Tree Physiology and Growth; Section 3: Modeling the Biophysical Effects of Global Change; Section 4: The Effects of Climate Change on Forest Soils; Section 5: Disturbance Interactions with Global Change; Section 6: Socioeconomic Impacts of Global Change