Spatiotemporal Variations in Grassland Desertification Based on Landsat Images and Spectral Mixture Analysis in Yanchi County of Ningxia, China

doi:10.1109/JSTARS.2014.2348612

	Spatiotemporal Variations in Grassland Desertification Based on Landsat Images and Spectral Mixture Analysis in Yanchi County of Ningxia, China
	Li, Jinya 1; Zhao, Lina 2; Xu, Bin 1; Yang, Xiuchun 3; Jin, Yunxiang 3; Gao, Tian 3; Yu, Haida 3; Zhao, Fen 3; Ma, Hailong 3; Qin, Zhihao 3
	2014
发表期刊	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
ISSN	1939-1404
卷号	7 期号:11 页码:4393-4402
摘要	Facing the worsening degradation of grasslands, state and local governments in China have implemented a series of ecological protection projects. Ningxia Hui Autonomous Region was the first province in China to implement a region-wide grazing ban, the effect of which has become contentious at all levels of government and a topic of public concern. The change of grassland desertification is the most direct indicator of the grazing ban's effect. This paper chooses Yanchi County in Ningxia as the study area to analyze the grassland desertification situation. Based on a series of Landsat TM/ETM+ images, field observations and expert review, a Ningxia grassland desertification classification and grading system was constructed. Then, spectral mixture analysis (SMA) and a decision-tree method were used to interpret images of the study area from 4 years: 1993, 2000, 2006, and 2011. The following results were obtained: the area of desertified grassland decreased gradually from 4142 km(2) in 1993 to 3695 km(2) in 2011, a decrease of 10.80%. The severity of desertification also declined as the area of severely desertified grassland gradually decreased to 324 km(2) in 2011 from 1093 km(2) in 1993, a decrease of 70.34%. The annual reduction rate of the desertified grassland area reached its peak during the period 2000-2006. In particular, the areas of severely desertified grassland declined by 8.86% annually. In a situation of declining rainfall, human factors (such as ecological protection policy) have become amajor cause of ongoing grassland desertification reversal and restoration of grassland vegetation.
关键词	Grassland desertification grazing ban remote sensing spatiotemporal analysis spectral mixture analysis (SMA)
学科领域	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
DOI	10.1109/JSTARS.2014.2348612
收录类别	SCI
语种	英语
WOS关键词	SEMIARID ENVIRONMENTS ; VEGETATION ; DYNAMICS ; INDEX
WOS研究方向	Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000347875700009
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Special Issue	SI
文献子类	Article
出版地	PISCATAWAY
EISSN	2151-1535
资助机构	National Natural Science Foundation of China (NSFC) [31372354] ; International Science and Technology Cooperation Program of China [2013DFR30760] ; Grassland Monitoring and Supervision Center Ministry of Agriculture, China [425-1] ; Centre of Supervision Management of Grassland. Ministry of Agriculture, China
作者邮箱	jyli@rcees.ac.cn ; zhaoln@ibcas.ac.cn ; xubin@caas.cn ; yangxiuchun@caas.cn ; jinyunxiang@caas.cn ; gaotianwuyi@163.com ; yuhaida5920@163.com ; zhaofen198931@163.com ; mahailong@caas.cn ; qinzhihao@caas.cn
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27214
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Agri Informat, Minist Agr, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Li, Jinya,Zhao, Lina,Xu, Bin,et al. Spatiotemporal Variations in Grassland Desertification Based on Landsat Images and Spectral Mixture Analysis in Yanchi County of Ningxia, China[J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,2014,7(11):4393-4402.
APA	Li, Jinya.,Zhao, Lina.,Xu, Bin.,Yang, Xiuchun.,Jin, Yunxiang.,...&Qin, Zhihao.(2014).Spatiotemporal Variations in Grassland Desertification Based on Landsat Images and Spectral Mixture Analysis in Yanchi County of Ningxia, China.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,7(11),4393-4402.
MLA	Li, Jinya,et al."Spatiotemporal Variations in Grassland Desertification Based on Landsat Images and Spectral Mixture Analysis in Yanchi County of Ningxia, China".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 7.11(2014):4393-4402.

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