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, Bin; Zhang, Tingjun; Wu, Qingbai; Sheng, Yu; Zhao, Lin; Zou, Defu
发表日期	2019
ISSN	1994-0416
EISSN	1994-0424
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 intercompare 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.
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS关键词	AIR-TEMPERATURE ; SNOW COVER ; MOUNTAINS ; SURFACE ; LAYER
WOS记录号	WOS:000458364500001
来源期刊	CRYOSPHERE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240306
作者单位	[Cao, Bin; Zhang, Tingjun] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Gansu, Peoples R China; [Cao, Bin] Carleton Univ, Dept Geog & Environm Studies, Ottawa, ON K1S 5B6, Canada; [Wu, Qingbai; Sheng, Yu] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Sheng, Yu; Zhao, Lin] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Jiangsu, Peoples R China; [Zou, Defu] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Cao, Bin,Zhang, Tingjun,Wu, Qingbai,et al. Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence[J]. 中国科学院西北生态环境资源研究院,2019,13(2).
APA	Cao, Bin,Zhang, Tingjun,Wu, Qingbai,Sheng, Yu,Zhao, Lin,&Zou, Defu.(2019).Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence.CRYOSPHERE,13(2).
MLA	Cao, Bin,et al."Brief communication: Evaluation and inter-comparisons of Qinghai-Tibet Plateau permafrost maps based on a new inventory of field evidence".CRYOSPHERE 13.2(2019).