HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Peer-reviewed Journal Articles, etc >

Spatial distribution of greenhouse gas concentrations in arid and semi-arid regions : A case study in East Asia

Files in This Item:
Spatial distribution_rev.pdf852.87 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Spatial distribution of greenhouse gas concentrations in arid and semi-arid regions : A case study in East Asia
Authors: Guo, M. Browse this author
Wang, X.-F. Browse this author
Li, J. Browse this author
Yi, K.-P. Browse this author
Zhong, G.-S. Browse this author
Wang, H.-M. Browse this author
Tani, H. Browse this author
Keywords: Climate change
East Asia
GHG concentrations
Land degradation
Spatial distribution
Issue Date: Apr-2013
Publisher: Elsevier
Journal Title: Journal of Arid Environments
Volume: 91
Start Page: 119
End Page: 128
Publisher DOI: 10.1016/j.jaridenv.2013.01.001
Abstract: Land degradation and global warming are currently highly active research topics. Land degradation can both change land cover and surface climate and significantly influence atmospheric circulation. Researches have verified that carbon dioxide (CO2) and methane (CH4) are major greenhouse gases (GHG) in the atmosphere and are directly affected by human activity. However, to date, there is no research on the spatial distribution of GHG concentrations and also no research on how land degradations affect GHG concentrations in arid and semi-arid regions. In this study, we used GHG data from the ENVIronment SATellite (ENVISAT) and the Greenhouse gases Observing Satellite (GOSAT), the Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST) data from the MODerate resolution Imaging Spectroradiometer (MODIS) and precipitation data from ground stations to analyze the way land degradation affects GHG concentrations in northern China and Mongolia, which exhibit the most serious land degradation process in East Asia. Our research revealed that the CO2 and CH4 concentrations (XCO2 and XCH4) increased from 2003 to 2009 and then decreased into 2011. We used geostatistics to predict and simulate the spatial distribution of XCO2 and XCH4 and found that the distribution of XCO2 displays a seasonal trend and is primarily affected by plant photosynthesis, soil respiration and precipitation. As the distribution of XCH4 is mainly affected by the sources' distribution, microbial processes, LST and submarine hydrate, the CH4 concentration presents no obvious seasonal changes and the high XCH4 values are primarily found in northeast and southeast China. Land degradation increases the concentration of GHG: the correlation coefficient between NDVI and XCO2 is R2 = 0.76 (P < 0.01) and the value between NDVI and XCH4 is R2 = 0.75 (P < 0.01).
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 王 秀峰

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University