No abstract

In the 12,000 years preceding the Industrial Revolution, human activities led to significant changes in land cover, plant and animal distributions, surface hydrology, and biochemical cycles. Earth system models suggest that this anthropogenic land cover change influenced regional and global climate. However, the representation of past land use in earth system models is currently oversimplified. As a result, there are large uncertainties in the current understanding of the past and current state of the earth system. In order to improve representation of the variety and scale of impacts that past land use had on the earth system, a global effort is underway to aggregate and synthesize archaeological and historical evidence of land use systems. Here we present a simple, hierarchical classification of land use systems designed to be used with archaeological and historical data at a global scale and a schema of codes that identify land use practices common to a range of systems, both implemented in a geospatial database. The classification scheme and database resulted from an extensive process of consultation with researchers worldwide. Our scheme is designed to deliver consistent, empirically robust data for the improvement of land use models, while simultaneously allowing for a comparative, detailed mapping of land use relevant to the needs of historical scholars. To illustrate the benefits of the classification scheme and methods for mapping historical land use, we apply it to Mesopotamia and Arabia at 6 kya (c. 4000 BCE). The scheme will be used to describe land use by the Past Global Changes (PAGES) LandCover6k working group, an international project comprised of archaeologists, historians, geographers, paleoecologists, and modelers. Beyond this, the scheme has a wide utility for creating a common language between research and policy communities, linking archaeologists with climate modelers, biodiversity conservation workers and initiatives.

During the late nineteenth and early twentieth centuries, over 450 precolumbian and historic Indigenous agricultural fields were documented across the state of Wisconsin. Today, the vast majority of these features are generally assumed to have been destroyed. Focusing on the Wisconsin River basin, which has the highest concentration of known archaeological field systems in the Midwest, this study explores the potential of using historical aerial photographs to identify and interpret archaeological agricultural features. Relying on state site records, an archive of high-resolution 1930s aerial images, and modern lidar data, we carefully examine the region surrounding 59 sites where fields had previously been documented. At a quarter of the sites we investigated, we successfully identified both known and unrecorded archaeological features—including agricultural fields, effigy mounds, earthworks, and house basins—most of which have been destroyed by recent land use practices. Our analysis sheds light on the complexity and richness of the archaeological landscape, with vast agricultural spaces situated beyond traditional site boundaries, and suggests that precolumbian and historic Indigenous agricultural fields may have been much larger and more widespread than conventionally understood.

This article reports on recent findings from the ongoing archaeological project at the single- component early seventeenth-century Huber phase site, Middle Grant Creek (11WI2739), located at Midewin National Tallgrass Prairie in Will County, Illinois. Excavations and geophysical surveys conducted over the past four years are yielding valuable data that are expanding our understandings of this critical period just prior to European colonialism. Findings have revealed a wide range of protohistoric activities, including foodways, skilled craft production, and ceremonial activities as well as far-flung trade relationships that illustrate the endurance of Indigenous trade networks into at least the early seventeenth-century. This article introduces the latest findings from Middle Grant Creek and brings them into discussions of this key period in Midwestern archaeology.