Variation in vegetation greenness in spring across eastern China during 1982–2006

Auteur(s) et Affiliation(s)

ZHANG, X.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

DAI, J.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

GE, Q.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

Description :
Vegetation greenness is a key indicator of terrestrial vegetation activity. To understand the variation in vegetation activity in spring across eastern China (EC), the AA. analysed the variation in the Normalised Difference Vegetation Index (NDVI) from April to May during 1982–2006. The regional mean NDVI across EC increased prior to 1998; the increase ceased, and the NDVI dropped to a low level thereafter. However, the processes of variation in the NDVI were different from one region to another (cultivated area, rapid urbanisation). The NDVI in the grasslands and croplands in the semi-humid and semi-arid areas showed a significant positive correlation with precipitation, while the NDVI in the woodlands in the humid to semi-humid areas showed a significant positive correlation with temperature. As much as 60% of the variation in the NDVI was explained by either precipitation or temperature.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2013, vol. 23, n°. 1, p. 45-56, nombre de pages : 12, Références bibliographiques : 31 ref.

Date :
2013

Editeur :
Pays édition : Chine

Langue :
Anglais