Structural Characteristics of Old- and Second-Growth Stands of Longleaf Pine ( Pinus palustris ) in the Gulf Coastal Region of the U.S.A.

作者: Jill M. Noel , William J. Platt , E. Barry Moser

DOI: 10.1111/J.1523-1739.1998.96124.X

关键词: GeographyPinus <genus>Secondary forestForestryDeserts and xeric shrublandsFlatwoods

摘要: Comparisons of old- and second-growth stands longleaf pine (Pinus palustris) may be useful for setting long-term objectives the restoration management stands. We quantified structural differences among (1) one xeric old-growth stand, (2) two stands, (3) seasonally flooded flatwoods stand using quadrats ranging from 100 m2 to 10,000 m2. estimated mean density size pines, frequency open spaces, scale aggregation each stand. The pines was higher in than but variability at higher, suggesting discrete patches densely stocked small trees, interspersed with larger trees spaces. This pattern not present either In contrast, site lower areas any other class distribution characterized by more large fewer intermediate-sized all it decreased increasing quadrat size, reflecting inclusion smaller quadrats; this three dynamics can provide a framework interpreting patterns observed an death older, creates allowing recruitment juveniles. Patches suitable were Proactive selective removal groups overstory would allow uneven create recruitment. differed sites thus is likely require different regimes. Caracteristicas Estructurales de Bosques Maduros y Segundo Crecimiento del Pino en la Region Costera Golfo los Estados Unidos Las comparaciones rodales maduros crecimiento secundario pinos hoja larga pueden ser utiles para establecer objetivos restauracion manejo largo plazo bosques secundarios. Aqui se cuantifican las diferencias estructurales entre: un rodal xerofitico maduro, dos xerofiticos secundario, bosque estacionalmente inundable, cuadrantes que varian entre Se estimaron densidades tamanos promedios pinos, el tamano frecuencias espacios abiertos, escala agregacion cada rodal. Las promedio pino fueron mas altas secundarios pero variabilidad maduro fue mayor, sugiriendo parches discretos arboles pequenos densamente agrupados, separados por grandes abiertos. No encontro este patron ninguno Por al contrario, densidad inundables menor abiertos mayor cualquier otro La distribucion clases estuvo caracterizada predominancia menos intermedios secundario. El todos esta diferencia disminuyo con incremento area cuadrantes, reflejando asi grandes; no observo tres dinamica puede proveer marco referencia interpretar patrones observados En maduros, muerte viejos origina apertura claros permitiendo instalacion encontraon adecuado juveniles creimrento proactivo traves eliminacion selectiva grupos dosel permitiria una pareja crearia inundable diferente es probable requiera diferentes sistemas manejo.

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