宁夏南部水土流失重点治理区梯田信息提取研究  

Terrace Information Extraction of the Key Control Area of Soil Erosion in Southern Ningxia

作　　者：李启萌 刘一凡 石云[2] 李一辰 王佳蓉 牛家禾 安丰平 LI Qimeng;LIU Yifan;SHI Yun;LI Yichen;WANG Jiarong;NIU Jiahe;AN Fengping(College of Applied Arts and Science,Beijing Union University,Beijing 100191,China;School of Geography and Planning,Ningxia University,Yinchuan 750021,China;School of Resources and Environment,Anhui Agricultural University,Hefei 230036,China)

机构地区：[1]北京联合大学应用文理学院,北京100191 [2]宁夏大学地理科学与规划学院,宁夏银川750021 [3]安徽农业大学资源与环境学院,安徽合肥230036

出　　处：《测绘与空间地理信息》2023年第10期54-57,共4页Geomatics & Spatial Information Technology

基　　金：宁夏大学自治区级大学生创新创业项目(Q2020107490091)资助。

摘　　要：梯田信息提取是水土保持工作的重点,本文以宁夏南部水土流失重点治理区固原市为研究区,以GF-1遥感影像为数据源,利用基于规则和基于样本两种面向对象的分类方法进行梯田信息提取,比较两种面向对象方法的提取结果和适用范围。结果表明,面向对象的方法在梯田信息提取上提取效果较好,基于样本的方法优于基于规则的方法。总体来看,面向对象的方法适用于提取分布广泛呈连片分布,且坡度在5°—15°的中低海拔地区的梯田。Terrace information extraction is the key of the soil and water conservation work,this article takes Guyuan city,a key control area of soil erosion in southern Ningxia as the research area,and uses GF-1 remote sensing images as the data source.Two object-oriented classification methods,rule-based and sample-based are used to extract terrace information.The extraction results and applicability of the two object-oriented methods are compared.The results show that the object-oriented method has a better effect on the extraction of terrace information,and the sample-based method is superior to the rule-based method.In general,the object-oriented method is suitable for extracting the terraces in the middle and low altitude areas with a wide continuous distribution and a slope of 5—15 degrees.

关 键 词：GF-1 梯田 面向对象 信息提取 

分 类 号：P208[天文地球—地图制图学与地理信息工程]