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Peatland area change in the southern Altay Mountains over the last twenty years based on GIS and RS analysis
Li, Huan1; Xu, Dingyi1; Zhao, Yan2
2014-12-01
Source PublicationFRONTIERS OF EARTH SCIENCE
Volume8Issue:4Pages:558-563
AbstractAnalyses results of total peatland area changes in the southern Altay Mountain region over the past 20 years are discussed in this paper. These analyses were based on remote sensing (RS) and geographical information system (GIS) studies. Possible control methods are evaluated by comparing these results to other regional records and climate data. The area of the peatland zones was calculated by overlaying a peatland layer of Landsat TM (Thematic Map) image constructed by using supervised classification with a layer of slope based on a digital elevation model (DEM). The results show that slope layer is crucial to improving the accuracy of peatland extracted from TM images. The peatland area of the Altay Mountains increased from 931.5 km(2) in 1990 to 977.7 km(2) in 2010. This trend is consistent with the climate change in this region, due in part to increasing temperatures and precipitation, suggesting possible climate controls on peatland expansion. The increase in the peatland area in the Altay Mountains over the last 20 years has been influenced by the westerlies. Alternatively, changes in the largest highland peatland area of the Zoige Basin, located in the eastern Tibetan Plateau have been influenced by the intensity of the Asian summer monsoons. In addition to increased temperatures, decreased precipitation in the Zoige Basin and increased precipitation in the Altay Mountains, due to varied patterns of atmospheric circulation, are the probable causes for driving the change differences in these two peatland areas.
SubtypeArticle
KeywordRs Image Dem Image Gis Analysis Peatland Area Change The Altay Mountains
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedGeology
WOS KeywordINTERANNUAL VARIATIONS ; TEMPERATURE ; VEGETATION ; BASIN ; PRECIPITATION ; PLATEAU ; CHINA ; NDVI
Indexed BySCI
Language英语
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000345389600009
PublisherSPRINGER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68468
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Yan
Affiliation1.Lanzhou Univ, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Li, Huan,Xu, Dingyi,Zhao, Yan. Peatland area change in the southern Altay Mountains over the last twenty years based on GIS and RS analysis[J]. FRONTIERS OF EARTH SCIENCE,2014,8(4):558-563.
APA Li, Huan,Xu, Dingyi,&Zhao, Yan.(2014).Peatland area change in the southern Altay Mountains over the last twenty years based on GIS and RS analysis.FRONTIERS OF EARTH SCIENCE,8(4),558-563.
MLA Li, Huan,et al."Peatland area change in the southern Altay Mountains over the last twenty years based on GIS and RS analysis".FRONTIERS OF EARTH SCIENCE 8.4(2014):558-563.
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