地形地貌对土地整理新增耕地数量的影响  

The Effect of Topography and Geomorphology on the Amount of Newly-Increased Cultivated Land

作　　者：田蜜[1] 高明[1] 鲍金星[1] 徐畅[1] 贾丽娟[1] 韩文友[1] 

机构地区：[1]西南大学资源环境学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2010年第11期98-103,共6页Journal of Southwest University(Natural Science Edition)

基　　金：国家科技支撑计划资助项目(编号:2008BAB38B02)

摘　　要：选取重庆市具有典型代表的浅丘、深丘和中低山3种地貌类型为研究对象,通过1∶2 000土地利用现状图和地形图,结合第一次土地详查资料,研究了地形地貌对土地整理新增耕地的影响.结果表明:不同地形地貌下土地整理新增耕地数量有较大差异,整理前浅丘区的土地利用类型以水田为主,净耕地系数较高,深丘和中低山区的土地利用类型以旱地为主,净耕地系数较低;实施土地整理后,浅丘区的新增耕地率较小,为4.98%和5.02%,深丘和中低山区新增耕地率较大,分别为10.95%,5.47%和16.07%,10.15%.因此,地形地貌可以通过影响土地利用现状和净耕地系数影响新增耕地潜力,对土地整理新增耕地的影响十分明显.Using the land-use map with a scale of 1∶2 000,the topographic map and the data of the first detailed land survey,the effects of topography and geomorphology on the amount of newly-increased cultivated land in Chongqing were studied with three kinds of typical physiognomy of shallow hill,deep hill and middle-low mountain as the study objects,with 2 sampling sites for each kind.The results showed a significant difference in the amount of newly-increased cultivated land of land consolidation under different physiognomical conditions.Before the implementation of land consolidation,the major land use type was paddy field in shallow hill regions,with a relatively high net cultivated land coefficient,but the major land use type was dryland in deep hill and middle-low mountain regions,with a lower net cultivated land coefficient.The rate of increase in cultivated land of shallow hill was 4.98% and 5.02% and that of deep hill and middle-low mountain regions was 10.95% and 5.47% and 16.07% and 10.15%,respectively,after the implementation of land consolidation.It is thus concluded that topography and geomorphology have significant influences on the status of land use and the potential of newly-increased farmland and on the newly-increased farmland as well.

关 键 词：土地整理 新增耕地 地形地貌 净耕地系数 

分 类 号：F311[经济管理—产业经济]