%0 Journal Article
%T Scale-induced uncertainty in MODIS-based land cover classification<br>MODIS土地覆盖分类的尺度不确定性研究
%A YANG Ying
%A LIU Yuanbo
%A RUAN Renzong
%A YE Chun
%A LU Panpan
%A <br>杨莹
%A 刘元波
%A 阮仁宗
%A 叶春
%A 卢盼盼
%J 遥感学报
%D 2012
%I 
%X Moderate-resolution Imaging Spectroradiometer(MODIS) data have been widely used in land cover classification with its advantages in multi-spectral and high-temporal features.The classification may suffer from uncertainty relevant to its moderate spatial resolution,yet the uncertainty remains unclear.To explore the issue,this paper used high spatial resolution data acquired from theAdvanced Space borne Thermal Emission and Reflection Radiometer(ASTER).SinceASTER and MODIS are onboard the same satellite platform,which allows simultaneous multi-resolution observation at coincident nadirs.The Poyang Lake area was taken as the study area for its diverse land covers in low-water period.The high-resolution ASTER data were upscaled to the same coarse resolution as MODIS,with a scaling function developed from a triangular spread function.Different classification methods were applied respectively for land cover classification using either MODIS or upscaled ASTER data.The uncertainties in classified results were subsequently analyzed based on error matrix and a linear model.The evaluation revealed that the uncertainties contributed from scale difference and that from differences in spectral resolution and imaging mode were(6.6—11.2):2.The scale-induced uncertainty also showed to be land-cover dependent.It was small for water body,but could be as large as 63% for forestland.The signif icance of scale effect is valuable for land cover classification,change detection analysis,scale effect evaluation,and uncertainty analysis in landscape ecology.
%K MODIS
%K Poyang Lake
%K land cover classification
%K spatial scale
%K uncertainty<br>MODIS
%K 鄱阳湖
%K 土地覆盖分类
%K 尺度
%K 不确定性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=A41A70F4AB56AB1B&jid=F926358B31AC94511E4382C083F7683C&aid=804D8F4691AB785603C15356F607552D&yid=99E9153A83D4CB11&vid=7801E6FC5AE9020C&iid=E158A972A605785F&sid=B84F2E0A99FDC89A&eid=750AE535ABE3D62A&journal_id=1007-4619&journal_name=遥感学报&referenced_num=0&reference_num=25