The Site : The Blackwood Division of the Duke Forest is near Durham, North Carolina (35° 58' 41.430"N, 79° 05' 39.087" W, 163 m asl) about 10 miles from the Duke University Campus. Mean annual precipitation is 1140 mm, and mean annual temperature is 15.5 °C. Soils are acidic Hapludalf, with a clayey loam in the upper 0.3 m, and clay below down to the bedrock at 0.7 m. Maximum soil moisture is 0.54 m3m-3. The local topographic variations are small (<5% slopes). The three vegetation types (abandoned Old Field - OF; Mid-rotation Pine Plantation - PP; & 80-100-year-old Oak-Hickory Type Deciduous Forest - DF) represent a typical land-use sequence in the piedmont region of N.C. The OF and PP cover types were established after a clear-cut and burn in 1983. Pine seedlings were planted (2 X 2.4 m), and natural regeneration added a large number of additional species. The Old Field is mowed every year to check the encroachment of pine and hardwood species.
Data sets and site descriptions can be found at: Duke University C-H2O Website, C-H2O Ecology group's data archive, and Duke University's FACE-FACTS I site.
