Atlantic coastal pine barrens in the context of "Temperate coniferous forest"

South Jersey, also known as Southern New Jersey, comprises the southern portion of the U.S. state of New Jersey. It is located between Pennsylvania and the lower Delaware River to its west, the Atlantic Ocean to its east, Delaware to its south, and Central Jersey or North Jersey to its north, depending on the definition of North Jersey.

South Jersey is part of the Philadelphia metropolitan area, or Delaware Valley, the seventh-largest metropolitan region in the nation with 6.288 million residents in the core metropolitan statistical area and 7.366 million residents in the combined statistical area of Camden, Philadelphia and Wilmington, as of 2020. South Jersey is known for containing the unique ecoregion known as the Pine Barrens, which remains largely undisturbed despite its location within the Northeastern megalopolis. The South Jersey Pine Barrens are the largest remaining example of the Atlantic coastal pine barrens ecosystem.

The New Jersey Pine Barrens, also known as the Pinelands or simply the Pines, is the largest remaining example of the Atlantic coastal pine barrens ecosystem, stretching across more than seven counties of New Jersey. Two other large, contiguous examples of this ecosystem remain in the northeastern United States: the Long Island Central Pine Barrens and the Massachusetts Coastal Pine Barrens. The name pine barrens refers to the area's sandy, acidic, nutrient-poor soil. Although European settlers could not cultivate their familiar crops there, the unique ecology of the Pine Barrens supports a diverse spectrum of plant life, including orchids and carnivorous plants. The area is also notable for its populations of rare pygmy pitch pines and other plant species that depend on the frequent fires of the Pine Barrens to reproduce. The sand that composes much of the area's soil is referred to by the locals as sugar sand.

The Pine Barrens remains mostly rural and undisturbed despite its proximity to the sprawling metropolitan cities of Philadelphia and New York City, in the center of the very densely populated Boston-Washington Corridor on the Eastern Seaboard. The heavily traveled Garden State Parkway and Atlantic City Expressway traverse sections of the eastern and southern Pine Barrens, respectively. The Pine Barrens territory helps recharge the 17-trillion-U.S.-gallon (64×10^ m) Kirkwood–Cohansey aquifer, containing some of the purest water in the United States.