论文部分内容阅读
利用遥感(RS)和地理信息系统(GIS)技术能够快捷高效地进行景观解译。土系分布与景观特征密切相关,可以借助景观变异规律来辅助土系调查。本研究选择句容市某小区域为研究对象,首先以决策树分类方法对资源三号卫星影像进行土地利用类型的分类,将分类结果与原始影像叠加,并结合野外调查结果进行人工修正;精度达到要求后,再以修正后的土地利用类型图为底图,用决策树分类方法添加合适的坡度和高程信息,生成“高程-坡度-土地利用类型”的景观分类图;在此基础上,根据土壤-景观关系,结合数字高程模型(DEM)数据、资源三号卫星原始影像和景观分类图,对大比例尺土系调查进行调查路线的选择、剖面点的设置和土系界线的确定,并在研究区中选取核心区进行验证。结果证明:改进后的方法相对于传统土壤调查方法更加定量地考虑到景观变异情况,调查结果更具有代表性。
Landscape interpretation can be done quickly and efficiently using remote sensing (RS) and geographic information system (GIS) technologies. Soil distribution and landscape features are closely related to the law of landscape variation can be used to assist soil survey. In this study, we selected a small area in Jurong City as the research object. Firstly, we classified the land use types of Resource No.3 satellite imagery by the method of decision tree classification, and superimposed the classification results with the original image, and combined with the field survey results, After reaching the requirements, the revised land use type map is used as the base map, and the appropriate gradient and elevation information is added by using the decision tree classification method to generate the landscape classification map of “elevation-gradient-land use type”; on this basis , According to soil-landscape relationship, combined with digital elevation model (DEM) data, the original image of Resources No.3 satellite and landscape classification map, the survey route selection, section point setting and soil line boundary determination of large-scale soil series survey , And select the core area in the study area for verification. The results show that the improved method takes into account landscape variation more quantitatively than the traditional soil survey methods, and the survey results are more representative.