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首页> 外文期刊>Journal of geovisualization and spatial analysis >Accuracy Assessment of ESA WorldCover 2020 and ESRI 2020 Land Cover Maps for a Region in Syria
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Accuracy Assessment of ESA WorldCover 2020 and ESRI 2020 Land Cover Maps for a Region in Syria

机译：叙利亚某地区 ESA WorldCover 2020 和 ESRI 2020 土地覆盖地图的准确性评估

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Obtaining high-accuracy land use/land cover (LULC) maps is very costly; therefore, the use of the global LULC maps may prove to be very effective in several domains, including for geographic information system (GIS) applications. However, it is essential to assess the accuracy of LULC maps before using them. The objective of this study was to assess the accuracy of the two latest free and high-resolution (10 m) global land cover maps, namely, European Space Agency (ESA) WorldCover2020 and Environmental Systems Research Institute (ESRI) 2020 Land Cover in Tartous governorate (Syria), using geospatial techniques. Two sampling methods are used to assess the accuracy of the two LULC maps: stratified random sampling (SRS) and equalized stratified random (ESR). The overall accuracy (OA) and kappa coefficient were calculated, in addition to other accuracy assessment indicators. In the first method, the OA of the ESA WorldCover2020 map increased from 74.4 (global accuracy) to 78.3% (local accuracy). On the other hand, the OA of the ESRI 2020 Land Cover map decreased by 16%, from 86 (global accuracy) to 74.1% (local accuracy). The kappa coefficient for the ESA WorldCover2020 map was 0.72 against 0.62 for ESRI 2020 Land Cover map. In the second method, the OA reached 70% and 73% for the ESA WorldCover2020 map and the ESRI 2020 Land Cover map, respectively. Furthermore, the kappa coefficient for the ESA WorldCover2020 map was 0.66 against 0.69 for ESRI 2020 Land Cover map. A comparison was also carried out between the eight classes of two LULC maps. In addition, the map of agreement and disagreement between ESA and ESRI land cover 2020 datasets was created, which highlighted that the disagreement was not uniformly distributed in the study area.
机译：获得高精度的土地利用/土地覆盖(LULC)地图是非常昂贵的,全球LULC地图可能被证明是非常有效的在几个领域,其中包括地理信息系统(GIS)应用程序。有必要评估LULC的准确性地图之前使用它们。研究评估的准确性最新的全球自由和高分辨率(10米)土地覆盖地图,即欧洲太空总署(ESA) WorldCover2020和环境系统研究所(ESRI公司)2020年土地覆盖塔尔图斯省(叙利亚),使用地理空间技术。评估的准确性两LULC地图:分层随机抽样(SRS)和平衡的分层随机(ESR)。(OA)和kappa系数计算其他精度评估指标。在第一种方法中,ESA的OAWorldCover2020从74.4(增加全球地图准确性)到78.3%(当地的准确性)。手,2020年ESRI OA土地覆盖地图下降了16%,从86年(全球精度)74.1%(当地的准确性)。欧洲航天局WorldCover2020地图0.72与0.62ESRI 2020土地覆盖图。方法,ESA的OA达到70%和73%WorldCover2020地图和ESRI 2020土地覆盖地图,分别。系数的ESA WorldCover2020地图0.66对0.69 ESRI 2020土地覆盖图。八之间也进行了比较类的两个LULC地图。协议和ESA和ESRI之间的分歧土地覆盖2020创建数据集分歧并不突出均匀分布在研究区。

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