Spatial-Temporal Patterns of Food Provision in Jiangxi Province
摘要
Jiangxi Province is one of the most important grain-production provinces in China.It is significant to understand the detail of food provision in Jiangxi Province.This paper analyzed the yield trend of food produc-tion in Jiangxi during 1980-2005.Food nutrition conversion formula and nutrition consumption standards were used to calculate the food provision.Overall food provision as well as spatial-temporal pattern of food provision and equilibrium of supply and demand were elucidated and demonstrated.The results show that,(1) rice ac-counts for 95% of total plant food output and the production of rice has been rising with tiny waves throughout the studying period,while the outputs of oil seeds,soybean,potato and sugarcane show downtrends since 1998,after rising for 15 years or so;(2) on the whole,food provision in Jiangxi Province is surplus.Taking the year of 2005 as an example,the outputs of food calorie,protein and fat amount to 80.76 nut12 kcal,2.2267 million ton and 1.3768 million ton respectively,which can support 97.94,75.32 and 55.88 million people respectively with a full-well-to-do living standard;(3) food provision of Jiangxi Province is increasing steadily,especially food fat provision,which increased 7.4 times in 2005 copmared to that in 1980 and provision of food calories and protein increased by 1.84 and 2.30 times respectively compared to 1980;(4) food provision of Jiangxi faces the problem of imbalance,food calories superabundance and food fat deficiency,so it is necessary to improve the planting structure and more fat-rich crops should be planted to heighten food fat provision so as to balance the food sup-ply;(5) counties near the Poyang Lake and Ganjiang River basin has higher food output than other regions in Ji-angxi,thanks partly to better availability of water resources.Therefore,it is important to protect the cropland in these high-yield regions and make a full use of the unused lands to maintain the sustainable food provision for Ji-angxi a