Soil carbon changes for bioenergy crops.

Andress, D.

Argonne National Laboratory

关键词: Poplars;    Crops;    Greenhouse Gases;    Electricity;    Ornl;   

DOI  :  10.2172/834706
RP-ID  :  ANL/ES/RP-113201
RP-ID  :  W-31-109-ENG-38
RP-ID  :  834706

美国|英语

来源: UNT Digital Library

【 摘 要 】

Bioenergy crops, which displace fossil fuels when used to produce ethanol, biobased products, and/or electricity, have the potential to further reduce atmospheric carbon levels by building up soil carbon levels, especially when planted on lands where these levels have been reduced by intensive tillage. The purpose of this study is to improve the characterization of the soil carbon (C) sequestration for bioenergy crops (switchgrass, poplars, and willows) in the Greenhouse gases, Regulated Emissions, and Energy Use in Transportation (GREET) model (Wang 1999) by using the latest results reported in the literature and by Oak Ridge National Laboratory (ORNL). Because soil carbon sequestration for bioenergy crops can play a significant role in reducing greenhouse gas (GHG) emissions for cellulosic ethanol, it is important to periodically update the estimates of soil carbon sequestration from bioenergy crops as new and better data become available. We used the three-step process described below to conduct our study.