摘要
基于地学信息图谱理论与方法,运用Arc GIS 10.0软件,以江苏省1990、2000和2010年3期遥感解译数据为空间数据源合成江苏省1990—2000和2000—2010年两个10年阶段的土地利用变化图谱以及耕地利用变化模式图谱,据此揭示江苏省土地利用变化时空特征及规律.结果表明:1990—2000年,江苏省土地利用变化以耕地与城乡建设用地、耕地与水域以及耕地与林草地的图谱单元互换为主要特征,尤其是以"耕地→城乡建设用地"、"耕地→水域"最为显著,耕地数量减少、空间分布集中.2000—2010年,江苏省土地利用变化最显著的仍是"耕地→城乡建设用地"图谱单元;同时,"草地→水域"、"城乡建设用地→水域"图谱类型分布集中且扩大趋势明显;与1990—2000年相比,空间图谱变化总面积和空间分离度均有所增大.江苏省耕地利用变化模式以后期变化型为主,前期变化型次之,反复和持续变化型耕地所占比例较小.
This paper studied the spatial-temporal characteristics and rules of land use change in Jiangsu Province using theories and methods of geo-spectrum.Based on the land use data translated from remote sensing images of 1990,2000 and 2010,we synthesized the geo-spectrum of the mode of arable land use change and that of land use change in two corresponding phases,1990-2000 and 2000-2010,in Jiangsu using Arc GIS 10.0.The results showed that in the phase of 1990-2000,the major characteristics of land use change were swaps between the geo-spectrum unit of arable land and urban-rural construction land,arable land and water body,and arable land and grassland.Specifically,the patterns of ＂arable land → urban-rural construction land＂and ＂arable land→ water body＂were highly significant.We also found the reduction of arable land area and the concentration of its spatial distribution.In the phase of 2000-2010,the ＂arable land → urban-rural construction land＂pattern was still the most salient characteristic.In addition,the patterns of ＂grassland → water body＂and ＂urban-rural construction land → water body＂became more spatially concentrated and tended to expand.Compared with the previous phase,the area of the land use in the phase of 2000-2010 had been changed expanded and became more scattered.Overall,the geospectrum of arable land use change in Jiangsu was mainly shaped by the anaphase change type and partially by the prophase change type,with a tiny influence of the repeated and continuous change.
出处
《应用生态学报》
CAS
CSCD
北大核心
2016年第4期1077-1084,共8页
Chinese Journal of Applied Ecology
基金
国土资源部海岸带开发与保护重点实验室开放基金项目(2015CZEPK02)
国家自然科学基金项目(41301185)
国家级大学生创新创业训练计划项目(201410446035)资助~~
关键词
土地利用变化
图谱特征
空间分离度
耕地占补
江苏省
land use change
characteristics of geo-spectrum
space separating degree
arable land occupation and supplement
Jiangsu Province
