A Dataset Cataloging Product-Specific Human Appropriation of Net Primary Production (HANPP) in US Counties

Description

This dataset is associated with the paper “Product-Specific Human Appropriation of Net Primary Production (HANPP) in US Counties” (Paudel et al, 2023). This dataset comprises Human Appropriation of Net Primary Productivity (HANPP) values for 3101 counties in the conterminous US for the years 1997, 2002, 2007, and 2012. For this dataset, HANPP is the carbon content of specific crop, timber, and livestock grazing products appropriated by humans in a county in a year.

Steps to reproduce

To calculate total HANPP for each county, we calculated three subsets of HANPP (crops, timber, and grazing) and added them together for each county for the years 1997, 2002, 2007, and 2012. Raw crop data are from the U.S. Department of Agriculture. We used stoichiometry formulas to calculate the NPP harvested for each crop in each county. There are two units of HANPP: county-wide and onsite. HANPP was further divided into used and unused portions and above- and below-ground portions. Raw data on softwood and hardwood harvests for each county were obtained from U.S. Forest Service data. We adapted the crop HANPP formula to calculate the NPP harvested during timber harvest. We estimated grazing HANPP on public and private lands using data from USDA Forest Service, the Bureau of Land Management, and Landsat. Crop, timber, and grazing HANPP were summed to get a measure of total HANPP for all counties. County HANPP was summed to get national HANPP. Calculations were done with Microsoft Excel and ArcGIS Pro software. For more information about the sources and methods used to produce this dataset, please see the accompanying Data in Brief paper "A Dataset Cataloging Product-Specific Human Appropriation of Net Primary Production (HANPP) in US Counties" (Paudel et al 2023).

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