Production potential and yield gaps of summer maize in the Beijing-Tianjin-Hebei Region

Auteur(s) et Affiliation(s)

WANG, T.

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

LU, C.

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

YU, B.

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

Description :
This study firstly simulated the potential and waterlimited yield of summer maize in the Beijing-Tianjin-Hebei (BTH) region using WOFOST model with meteorological data of 40 years, and then analyzed yield gaps between the actual and potential yield based on statistical data at county level. The simulated yields gradually decrease from northeast to southwest with changes in climatic conditions particularly temperature and precipitation. Annual variation of potential yield is higher in the central and southern parts than the northeastern part. Compared to potential yield, the water-limited yield has higher coefficient of variation (CV), because of precipitation effects. The study results can be used for land use planning and should promote the growing of rainfed summer maize to reduce the pressure on water resource.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2011, vol. 21, n°. 4, p. 677-688, nombre de pages : 12, Références bibliographiques : 2 p.

Date :
2011

Editeur :
Pays édition : Chine

Langue :
Anglais