NACP MCI: CO2 Emissions Inventory, Upper Midwest Region, USA., 2007

This data set provides a bottom-up CO2 emissions inventory for the mid-continent region of the United States for the year 2007. The study was undertaken as part of the North American Carbon Program (NACP) Mid-Continent Intensive (MCI) campaign. Emissions for the MCI region were compiled from these resources into nine inventory sources (Table 1):(1) forest biomass and soil carbon, harvested woody products carbon, and agricultural soil carbon from the U.S. Greenhouse Gas (GHG) Inventory (EPA, 2010; Heath et al., 2011);(2) high resolution data on fossil and biofuel CO2 emissions from Vulcan (Gurney et al,. 2009); (3) CO2 uptake by agricultural crops, lateral transport in crop biomass harvest, and livestock CO2 emissions using USDA statistics (West et al., 2011); (4) agricultural residue burning (McCarty et al., 2011);(5) CO2 emissions from landfills (EPA, 2012);(6) and CO2 losses from human respiration using U.S. Census data (West et al., 2009). The CO2 inventory in the MCI region was dominated by fossil fuel combustion, carbon uptake during crop production, carbon export in biomass (commodities) from the region, and to a lesser extent, carbon sinks in forest growth and incorporation of carbon into timber products.

本数据集为美国中部地区2007年的自下而上二氧化碳排放清单提供支持。该研究作为北美碳计划（NACP）中部密集型（MCI）活动的一部分而开展。MCI地区的排放数据通过以下九个清单来源进行汇总（见表1）：（1）森林生物质和土壤碳、采伐木材产品碳以及农业土壤碳，来源于美国温室气体（GHG）清单（EPA，2010；Heath等，2011）；（2）Vulcan提供的化石燃料和生物燃料二氧化碳排放的高分辨率数据（Gurney等，2009）；（3）利用美国农业部统计资料，对农业作物吸收的二氧化碳、作物生物质收获过程中的横向运输以及牲畜二氧化碳排放进行统计（West等，2011）；（4）农业残留物焚烧（McCarty等，2011）；（5）垃圾填埋场二氧化碳排放（EPA，2012）；（6）以及利用美国人口普查数据计算的人呼吸导致的二氧化碳损失（West等，2009）。MCI地区的二氧化碳清单主要由化石燃料燃烧、作物生产过程中的碳吸收、区域生物质（商品）出口碳以及在一定程度上，森林生长中的碳汇和木材产品中碳的固化所主导。