2000～2014年承德市建成区土地利用动态变化研究

Study on Land Use Dynamic Change in Chengde City during 2000- 2014

采用2000、2009和2014年的Landsat TM/OLI影像,利用支持向量机分类对承德市建城区（含双桥区与双滦区）进行计算机自动分类,并进行精度验证,得到3期承德市建成区土地利用/覆盖分类图;对研究区内土地覆盖类型进行统计分析,采用转移矩阵进行变化监测。结果表明：2000～2014年人类活动的影响和城市化的加剧导致承德市建筑用地面积呈现增长趋势,耕地和森林与灌草丛地面积出现负增长。因此,采取相应措施维护承德市建成区森林与灌草丛覆盖面积,对于改善城市生态环境很有必要。

Three period of land using / covering classification figure was obtained and the accuracy was verified with 2000,2009,2014 year＇s Landsat TM / OLI images,using support vector machine（ SVM） classification to classify the remote sensing data of Chengde＇s urban area（ including Shuangqiao area and Shuangluan area） by computer. The results showed that human activities＇ impact and urban increasing result in the area of the construction has increased,but the area of plough,forest and grass has a negative growth during 2000-2014. In order to improve the survival environment of human,taking measures to protect the forest and grass in urban area are necessary.