A STUDY ON TREND AND DRIVING FORCES OF CULTIVATED LAND USE CHANGE IN HUNAN PROVINCE DURING THE PAST 50 YEARS
基于1949-1999年省县两级数据，分析了湖南省耕地面积和人均耕地减少的趋势及区域差异，通过主成分分析识别出经济、社会和技术三类驱动力，为农业可持续发展提供依据。
According to statistical and survey data from 1949 to 1999 at provincial and county levels, trend of cultivated land change and its driving forces in Hunan Province during the last 50 years are discussed in this article. It was found that:since the 1950s, the total area of arable land and per capita availability are reducing;the decreasing regional differences of cultivated land in the past 50 years was very notable;as a result of the principal component analysis,the eight driving forces variables affecting arable land changes were analyzed which could be classified into three types,i.e,the dynamic development of economy,pressure of social system and progress of science and technology in agriculture.As to the specific factors, per capita net living space, population and yield of grain per ha are the main driving forces, which play an important role in the changing of cultivated land. The analytical results and conclusion of this paper will provide scientific basis for sustainable agricultural development in Hunan Province.