CHILLING UNIT IN RELATION TO THE DEVELOPMENT OF TEMPERATE FRUITS IN THE NORTHERN MOUNTAINOUS PROVINCE OF VIETNAM

Abstract

Aimed to properly determine the impact of weather condition in global climate changes circumstance specialized in annual chilling unit (CU) to the temperate fruit development in the Northern mountainous provinces, a study in the form of basically over all investigation was systematically conducted in which the method of overlapping the suitably related maps, the technologies of participatory rural appraisal (PRA), key informative persons (KIP) and geographical information system (GIS) were used as the principal tools. Results conducted from the study showed that the annual chilling unit calculated in two recent decades was unremarkably changed, closely related to the distribution of temperate fruit production in the studied region and it can be necessarily used for planning and projecting the development of these crops in the Northern mountainous provinces.