基于遥感影像的田坎系数的合理性验证——以韶关乐昌市为例  

Reasonability Validation on Field Ridge Coefficient Based on Remote Sensing Image

作　　者：王永梅[1] 杨传俊[1] 邓南荣[1] 

机构地区：[1]广东省生态环境与土壤研究所,广东广州510650

出　　处：《安徽农业科学》2010年第17期9292-9294,9369,共4页Journal of Anhui Agricultural Sciences

基　　金：广东省科技攻关项目(2008A0602049)

摘　　要：以韶关乐昌市为研究区,针对二次土地调查下发的田坎系数与更新调查田坎系数存在的较大差异。从遥感影像目视解译提取未达到规定标准的田坎,进行田坎系数测算,并分别与二次土地调查下发的田坎系数和更新调查田坎系数进行比较。结果表明,使用遥感影像获取的田坎系数与广东省第二次土地调查下发的田坎系数的符合度在96%以上,而与更新调查的田坎系数的符合度仅为50%~30%。因此该研究认为,第二次土地调查的田坎系数较符合真实情况,计算出的耕地面积较精确。With Lechang City of Shaoguan as the studied area,aiming to greater difference of field ridge coefficient existing between the second land surveys and renewing survey,the field ridges,which didn＇t reach the regulation standard were analyzed and extracted from remote sensing images by seeing for measuring field ridge coefficients and they were compared with that found in the second land surveys and renewing survey.The results showed that the consistent degree between the field ridge coefficient obtained by using remote sensing image and that found in the second land survey in Guangdong Province was above 96% and the consistent degree between it and that found in renewing survey was only 50%～30%.So,it was believed in this study that the field ridge coefficient found in the second land survey accorded with true condition more and the calculated farmland area was more precise.

关 键 词：第二次土地调查 遥感影像 田坎系数 韶关乐昌市 

分 类 号：S127[农业科学—农业基础科学]