A range-wide experiment to investigate nutrient and soil moisture interactions in Loblolly Pine plantations
DOMEC, Jean-Christophe
Interactions Sol Plante Atmosphère [UMR ISPA]
Department of Forestry and Environmental Resources
< Leer menos
Interactions Sol Plante Atmosphère [UMR ISPA]
Department of Forestry and Environmental Resources
Idioma
en
Article de revue
Este ítem está publicado en
Forests. 2015, vol. 6, n° 6, p. 2014-2028
MDPI
Resumen en inglés
The future climate of the southeastern USA is predicted to be warmer, drier and more variable in rainfall, which may increase drought frequency and intensity. Loblolly pine (Pinus taeda) is the most important commercial ...Leer más >
The future climate of the southeastern USA is predicted to be warmer, drier and more variable in rainfall, which may increase drought frequency and intensity. Loblolly pine (Pinus taeda) is the most important commercial tree species in the world and is planted on ~11 million ha within its native range in the southeastern USA. A regional study was installed to evaluate effects of decreased rainfall and nutrient additions on loblolly pine plantation productivity and physiology. Four locations were established to capture the range-wide variability of soil and climate. Treatments were initiated in 2012 and consisted of a factorial combination of throughfall reduction (approximate 30% reduction) and fertilization (complete suite of nutrients). Tree and stand growth were measured at each site. Results after two growing seasons indicate a positive but variable response of fertilization on stand volume increment at all four sites and a negative effect of throughfall reduction at two sites. Data will be used to produce robust process model parameterizations useful for simulating loblolly pine growth and function under future, novel climate and management scenarios. The resulting improved models will provide support for developing management strategies to increase pine plantation productivity and carbon sequestration under a changing climate.< Leer menos
Palabras clave
Pinus taeda
nitrogen
Palabras clave en inglés
volume increment
throughfall exclusion
fertilization
phosphorus
Orígen
Importado de HalCentros de investigación