Accuracy Evaluation and Consistency Analysis of Four Global Land Cover Products in the Arctic Region

doi:10.3390/rs11121396

	Accuracy Evaluation and Consistency Analysis of Four Global Land Cover Products in the Arctic Region
	Liang, Li 1,2; Liu, Qingsheng 1; Liu, Gaohuan 1; Li, He 1; Huang, Chong 1
刊名	REMOTE SENSING
	2019-06-02
卷号	11 期号:12 页码:24
关键词	global land cover dataset spatial agreement spatial variation in accuracy Arctic
ISSN号	2072-4292
DOI	10.3390/rs11121396
通讯作者	Liu, Qingsheng(liuqs@lreis.ac.cn)
英文摘要	Land cover is a fundamental component of crucial importance in the earth sciences. To date, many excellent international teams have created a variety of land cover products covering the entire globe. To provide a reference for researchers studying the Arctic, this paper evaluates four commonly used land cover products. First, we compare and analyze the four land cover products from the perspectives of land cover type, distribution and spatial heterogeneity. Second, we evaluate the accuracy of such products by using two sets of sample points collected from the Arctic region. Finally, we obtain the spatial consistency distribution of the products by means of superposition analysis. The results show the following: (a) among the four land cover products, Climate Change Initiative Land Cover (CCI-LC) has the highest overall accuracy (63.5%) in the Arctic region, GlobeLand30 has an overall accuracy of 62.2% and the overall accuracy of the Global Land Cover by the National Mapping Organization (GLCNMO) is only 48.8%. When applied in the Arctic region, the overall accuracy of the Moderate Resolution Imaging Spectroradiometer (MODIS) is only 29.5% due to significant variances. Therefore, MODIS and GLCNMO are not recommended in Arctic-related research as their use may lead to major errors. (b) An evaluation of the consistency of the four products indicates that the classification of the large-scale homogeneous regions in the Arctic yields satisfactory results, whereas the classification results in the forest-tundra ecotone are unsatisfactory. The results serve as a reference for future research. (c) Among the four products, GlobeLand30 is the best choice for analyzing finely divided and unevenly distributed surface features such as waters, urban areas and cropland. Climate Change Initiative Land Cover (CCI-LC) has the highest overall accuracy, and its classification accuracy is relatively higher for forests, shrubs, sparse vegetation, snow/ice and water. GlobeLand30 and CCI-LC do not vary much from each other in terms of overall accuracy. They differ the most in the classification accuracy of shrub-covered land; CCI-LC performed better than GlobeLand30 in the classification of shrub-covered land, whereas the latter obtained higher accuracy than that of the former in the classification of urban areas and cropland.
资助项目	National Key Research and Development Program of China[2016YFC1402701]
WOS关键词	PERMAFROST THAW ; VEGETATION MAP ; DATA SETS ; MODIS ; CLASSIFICATION ; GLOBCOVER ; GLC2000 ; CARBON ; TREE ; SENSITIVITY
WOS研究方向	Remote Sensing
语种	英语
出版者	MDPI
WOS记录号	WOS:000473794600002
资助机构	National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58416]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Qingsheng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liang, Li,Liu, Qingsheng,Liu, Gaohuan,et al. Accuracy Evaluation and Consistency Analysis of Four Global Land Cover Products in the Arctic Region[J]. REMOTE SENSING,2019,11(12):24.
APA	Liang, Li,Liu, Qingsheng,Liu, Gaohuan,Li, He,&Huang, Chong.(2019).Accuracy Evaluation and Consistency Analysis of Four Global Land Cover Products in the Arctic Region.REMOTE SENSING,11(12),24.
MLA	Liang, Li,et al."Accuracy Evaluation and Consistency Analysis of Four Global Land Cover Products in the Arctic Region".REMOTE SENSING 11.12(2019):24.