江苏沿海地区耕地分布格局及其变化特征  

Analysis on Spatial Distribution and Changing Characteristics of Cultivated Land in the Coastal Region of Jiangsu

作　　者：张文华[1] 刘芳[2] 吕晓[1,3] 廉丽姝[1] 

机构地区：[1]曲阜师范大学地理与旅游学院,山东276826 [2]日照市国土资源局,山东276826 [3]国土资源部海岸带开发与保护重点实验室,江苏210024

出　　处：《国土资源情报》2016年第10期27-31,26,共6页Land and Resources Information

基　　金：国家自然科学基金项目(41301185);国土资源部海岸带开发与保护重点实验室开放基金(2015CZEPK02)资助

摘　　要：利用1990年、2000年和2010年的遥感解译土地利用数据提取耕地数据,运用耕地集中度指数、核密度计算等方法分析江苏沿海地区耕地资源空间分布格局及其变化特征。结果表明:1 1990-2010年,江苏沿海地区耕地面积所占比重较高,但呈逐年降低趋势,耕地数量逐年减少。耕地类型以平原水田、平原旱地两类为主,呈整体交错分布、部分集聚的分布格局;2从耕地分布状况来看,呈中部、南部高,北部略低的分布特征,耕地分布较集中,且在时间序列上有进一步加强的趋势,耕地区域变化差异性不明显;3从耕地核密度分布状况来看,密度高值区呈现扩散趋势,密度低值区呈集聚趋势,且在进一步增强。耕地整体呈中西部、西南部耕地分布稀疏,中东部、北部分布密集的空间分布特征。Extract cultivated land data with remote sensing interpretation of land usage data in 1990, 2000 and 2010, analyze the spatial distribution pattern of cultivated land resources and their evolutionary characteristics of the coastal region of Jiangsu Province with the methods of kernel density calculation and concentration index. The results suggest that： 1.The proportion of cultivated land area in the coastal region of Jiangsu Province is higher during 1990-2010, but the trend and the quantity of cultivated land is decreasing year by year. The main types of cultivated lands are paddy fields and plain dry land, and its distribution pattern presents the whole staggered distribution and partial agglomeration. 2. For distribution of cultivated land, the distribution pattern of cultivated land area is higher in the middle and the south, slightly lower in the north. It was relatively concentrated, more concentrated in the time series, and regional variation is not obvious. 3. For distribution of cultivated land densities, the high value area shows a trend of diffusion, while the low value region is in a trend of agglomeration and will further strengthened. The cultivated land densities in the northern and mid-east regions are higher than those in the mid-west and southwest.

关 键 词：耕地空间分布 耕地集中度指数 核密度 GIS 江苏沿海地区 

分 类 号：F323.211[经济管理—产业经济] S159.2[农业科学—土壤学]