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A comparative analysis of changes in the phasing of temperature and satellite-derived greenness at northern latitudes

Auteur(s) et Affiliation(s)

MA, T.
State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
ZHOU, C.
State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
PEI, T.
State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
XIE, Y.
Dep. of Geography and Geology, Eastern Michigan Univ., Ypsilanti, Etats-Unis


Description :
Over recent decades, the results have shown trends indicating a marked increased towards overall plant productivity from 1982 to 2005, reduced trends in seasonal variation at low-mid latitudes, increased trends in seasonal variations at mid-high latitudes, and an earlier phase in northern terrestrial ecosystems (~1.1 days) in parallel with changes in the phasing of surface temperatures at northern latitudes over the 24 years in this study. These shifts in annual cycles of terrestrial vegetation appear to have a distinct geographical zonality and are dependent upon latitudinal changes in climatic variables. More conspicuous changes in overall vegetation productivity and the seasonal phase of ecosystems have been observed in Eurasia compared to North America, largely because of a more rapid rise in temperature. These results state that changing climate boosts plant growth at northern latitudes, but also alters the phase and seasonal variations of the annual cycle of terrestrial ecosystems.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2013, vol. 23, n°. 1, p. 57-66, nombre de pages : 10, Références bibliographiques : 24 ref.

Date :
2013

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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