TR32-Database: Database of Transregio 32

[677] - Inverse determination of soil heterotrophic respiration dependency on temperature and water content under field conditions

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Citation
Bauer, J., Weihermüller, L., Huisman, J. A., Herbst, M., Graf, A., Sequaris, J., Vereecken, H., 2012. Inverse determination of soil heterotrophic respiration dependency on temperature and water content under field conditions. Biogeochemistry, 108, 119 - 134. DOI: 10.1007/s10533-011-9583-1.
Identification
Title(s):Main Title: Inverse determination of soil heterotrophic respiration dependency on temperature and water content under field conditions
Description(s):Abstract: Heterotrophic soil respiration is an important flux within the global carbon cycle. Exact knowledge of the response functions for soil temperature and soil water content is crucial for a reliable prediction of soil carbon turnover. The classical statistical approach for the in situ determination of the temperature response (Q10 or activation energy) of field soil respiration has been criticised for neglecting confounding factors, such as spatial and temporal changes in soil water content and soil organic matter. The aim of this paper is to evaluate an alternative method to estimate the temperature and soil water content response of heterotrophic soil respiration. The new method relies on inverse parameter estimation using a 1-dimensional CO2 transport and carbon turnover model. Inversion results showed that different formulations of the temperature response function resulted in estimated response factors that hardly deviated over the entire range of soil water content and for temperature below 25°C. For higher temperatures, the temperature response was highly uncertain due to the infrequent occurrence of soil temperatures above 25°C. The temperature sensitivity obtained using inverse modelling was within the range of temperature sensitivities estimated from statistical processing of the data. It was concluded that inverse parameter estimation is a promising tool for the determination of the temperature and soil water content response of soil respiration. Future synthetic model studies should investigate to what extent the inverse modelling approach can disentangle confounding factors that typically affect statistical estimates of the sensitivity of soil respiration to temperature and soil water content.
Identifier(s):DOI: 10.1007/s10533-011-9583-1
Responsible Party
Creator(s):Author: Jana Bauer
Author: Lutz Weihermüller
Author: Johan A. Huisman
Author: Michael Herbst
Author: Alexander Graf
Author: Jean-Marie Sequaris
Author: Harry Vereecken
Publisher:Springer
Topic
TR32 Topic:Soil
Subject(s):CRC/TR32 Keywords: SRP, Soil Water Content, Sensor
File Details
File Name:2012_Bauer_Biogeochemistry.pdf
Data Type:Text
Size(s):6 Pages
File Size:676 kB (0.66 MB)
Date(s):Date Accepted: 2011-02-11
Issued: 2011-03-08
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
Geographic
North:51.5915435
East:7.4236328
South:50.2058789
West:5.2263672
Measurement Region:RurCatchment
Measurement Location:--RurCatchment--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2012
Type:Article
Article Type:Journal
Source:Biogeochemistry
Volume:108
Number Of Pages:16
Page Range:119 - 134
Metadata Details
Metadata Creator:Johann Alexander (Sander) Huisman
Metadata Created:2013-12-05
Metadata Last Updated:2013-12-05
Subproject:B1
Funding Phase:2
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:199
Metadata Downloads:0
Dataset Downloads:2
Dataset Activity
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