Arid
DOI10.1080/01431161.2015.1066526
Temporal and spatial variations of grassland desertification monitoring in Tibet of China
Xu, B.1; Li, J. Y.1,2; Jin, Y. X.1; Wang, Z. L.3; Qin, Z. H.1; Wu, M. Q.3; Wang, D. L.1; Zhang, J.4; Ma, H. L.1; Yang, X. C.1
通讯作者Yang, X. C.
会议名称4th International Symposium on Recent Advances in Quantitative Remote Sensing (RAQRS)
会议日期SEP 22-26, 2014
会议地点Torrent, SPAIN
英文摘要

Tibet, the largest region of the Qinghai-Tibet Plateau, is undergoing extensive grassland deterioration and desertification due to both human and natural factors. Alpine meadow and grassland restoration is difficult after degradation; consequently, the desertification of the Tibetan grassland has attracted substantial social attention. This article considered Amdo, Baingoin, Coqen, and Zhongba counties in Tibet as the study areas, employed remote-sensing data, and developed Tibetan grassland desertification classification indices based on field surveys. Moreover, this study used spectral mixture analysis (SMA) methods to interpret remote-sensing image data from the study areas during three periods (1990, 2000, and 2009) and considered the bare sand (gravel) area proportion as the main basis for the evaluation of grassland desertification. The results of this study demonstrate that the slightly, moderately, and severely desertified grasslands of the monitoring zone covered a total area of 114,113.16km(2) in 1990, accounting for 82.12% of the study area. The area exhibited no change in 2000 and decreased by 4472.31km(2) in 2009. The severely desertified grassland area declined from 1990 to 2009. The degree of grassland desertification in these four Tibetan counties diminished from 1990 to 2009, and the grassland desertification area exhibited a gradual reduction during the same period. Regarding other soil coverage types, the ice and snow area markedly changed and declined to approximately one-third of its original extent during these 20years, and most of the ice and snow area was converted to bare land and various types of desertified grassland.


来源出版物INTERNATIONAL JOURNAL OF REMOTE SENSING
ISSN0143-1161
EISSN1366-5901
出版年2015
卷号36
期号19-20
页码5150-5164
出版者TAYLOR & FRANCIS LTD
类型Article;Proceedings Paper
语种英语
国家Peoples R China
收录类别SCI-E ; CPCI-S
WOS记录号WOS:000364334500024
WOS关键词SPECTRAL MIXTURE ANALYSIS ; LANDSAT IMAGES ; DYNAMICS ; NINGXIA
WOS类目Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Remote Sensing ; Imaging Science & Photographic Technology
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/304083
作者单位1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Agri Informat, Minist Agr, Beijing 100081, Peoples R China;
2.Ludong Univ, Coll Geog & Planning, Yantai 264025, Peoples R China;
3.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China;
4.Planning & Design Inst Forest Prod Ind, State Forestry Adm, Beijing 100714, Peoples R China
推荐引用方式
GB/T 7714
Xu, B.,Li, J. Y.,Jin, Y. X.,et al. Temporal and spatial variations of grassland desertification monitoring in Tibet of China[C]:TAYLOR & FRANCIS LTD,2015:5150-5164.
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