摘要
长江三角洲是中国人口最密集、经济增长最快和土地集约化利用程度最高的地区之一 ,经济快速发展加剧的人地矛盾已经成为区域可持续发展面临的一个重要问题。论文利用近50年耕地长序列统计资料和近5年的土地详查与变更数据 ,研究揭示了长江三角洲高强度土地开发的特征和近50年耕地数量变化的基本过程及其空间差异 ,并初步探讨了耕地数量变化的主要驱动因子及其作用。研究表明 ,近50年来 ,长江三角洲地区耕地数量呈现明显的波动减少趋势 ,经历了由增加→急剧减少→缓慢减少→快速减少的基本变化过程 ,其中分别在1958～1963年、1985年前后和1993年前后出现了三次明显的耕地流失高峰 ,其形成机制主要是政策、经济发展和人口增长的驱动。
The Yangtze River Delta is one of the regions with most densely population,fastest economic growth and most intensive land use,the contradiction of land shortage sharpened by high speed economic development has become the problem not to be ignored which restricts regional sustainable development This paper has revealed the characteristics of high intensity land exploitation and the basic process and driving forces of change in arable land area according to the data of long series statistics of arable land area during the past 50 years and detailed investigation of land use during the recent five years The research results show that there is a trend of obvious fluctuant decrease in arable land area during the past 50 years.The changes of arable land area undergo the process from increase to steep decrease to gently decrease to rapid decrease,in which,there are three height periods of decrease in arable land,they are 1958 to 1963,round about 1985 and round about 1993 respectively The mechanism of decrease in arable land are mainly the driving forces of policy,economic development and population growth
出处
《自然资源学报》
CSSCI
CSCD
北大核心
2001年第2期121-127,共7页
Journal of Natural Resources
基金
国家自然科学基金!重点项目 (49831070)
国土资源部重点项目! (991014)联合资助
