气候变化领域集成服务门户(CCPortal): Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence

CCPortal

DOI	10.5194/tc-13-511-2019
	Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence
	Cao B.; Zhang T.; Wu Q.; Sheng Y.; Zhao L.; Zou D.
发表日期	2019
ISSN	19940416
EISSN	13
起始页码	511
结束页码	519
卷号	13 期号:2
英文摘要	Many maps have been produced to estimate permafrost distribution over the Qinghai-Tibet Plateau (QTP), but the errors and biases among them are poorly understood due to limited field evidence. Here we evaluate and inter-compare the results of six different QTP permafrost maps with a new inventory of permafrost presence or absence comprising 1475 field sites compiled from various sources. Based on the in situ measurements, our evaluation results showed a wide range of map performance, with Cohen's kappa coefficient from 0.21 to 0.58 and an overall accuracy between about 55 % and 83 %. The low agreement in areas near the boundary between permafrost and non-permafrost and in spatially highly variable landscapes highlights the need for improved mapping methods that consider more controlling factors at both medium-large and local scales. © Author(s) 2019.
学科领域	error analysis; in situ measurement; inventory; map; performance assessment; permafrost; China; Qinghai-Xizang Plateau
语种	英语
scopus关键词	error analysis; in situ measurement; inventory; map; performance assessment; permafrost; China; Qinghai-Xizang Plateau
来源期刊	The Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118930
作者单位	Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Department of Geography and Environmental Studies, Carleton University, Ottawa, K1S 5B6, Canada; State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou, 730000, China
推荐引用方式 GB/T 7714	Cao B.,Zhang T.,Wu Q.,et al. Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence[J],2019,13(2).
APA	Cao B.,Zhang T.,Wu Q.,Sheng Y.,Zhao L.,&Zou D..(2019).Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence.The Cryosphere,13(2).
MLA	Cao B.,et al."Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence".The Cryosphere 13.2(2019).