基于RS的海陆交接带土地利用格局演变研究——以盐城大丰段为例

以盐城大丰段为例,利用1992、2002年2个年份的遥感影像分析了海陆交接带的土地利用类型及其格局变化规律。研究发现,10年间,6种土地利用类型均发生变化,滩涂、垦区、耕地面积呈减少趋势,建筑用地、水体、绿地面积呈增加趋势,其中滩涂面积减少的比重最大,水体面积增加的最多,绿地面积变化最小。自然条件是促使土地变化的基础,人口压力、经济发展、政治政策等社会经济因素深刻影响了土地利用类型的变更,是促使土地格局演变的主导因素。

Study on Land Use Pattern Changes in the Land-sea Connecting Belt Based on GIS

Taking Dafeng section of Yancheng as an example,using remote sensing images in 1992 and 2002,the change laws of the land use types and its pattern in the land-sea connecting belt were analyzed.The research indicated that six kinds of land use types changed during ten years.The area of seabeach,reclamation area and cultivated land declined,while the area of construction land,water body and green land increased.The decreased proportion of seabeach area was the most,the increased area of water body was the most and the changes of the green land were the least.Natural condition is the foundation of the land change.Population pressure,development of economy,political policy and other social economy factors are the leading factors of the land pattern changes,which affect the changes of land use pattern deeply.