Arid
DOI10.1016/j.rse.2013.07.010
Monitoring and analysis of grassland desertification dynamics using Landsat images in Ningxia, China
Li, Jinya1; Yang, Xiuchun1; Jin, Yunxiang1; Yang, Zhi2; Huang, Wenguang3; Zhao, Lina4; Gao, Tian1; Yu, Haida1; Ma, Hailong1; Qin, Zhihao1; Xu, Bin1
通讯作者Xu, Bin
来源期刊REMOTE SENSING OF ENVIRONMENT
ISSN0034-4257
EISSN1879-0704
出版年2013
卷号138页码:19-26
英文摘要

State and local governments in China have implemented a series of grassland protection policies to address the problem of grassland degradation. In 2003, Ningxia was the first province to implement a province-wide grazing ban. The effect of this ban is contentious at all levels of government and has become a topic of public concern. Grassland desertification is the most direct indicator of the effect of the grazing ban. We selected 14 counties and cities in north-central Ningxia as the study area. A desertification classification and grading system for Ningxia’s grassland was then designed based on fieldwork and expert review. Using the Spectral Mixture Analysis (SMA) and decision-tree methods, we interpreted Landsat TM/ETM + images of the study area during four years: 1993, 2000, 2006 and 2011. The following results were obtained: from 1993 to 2011, the area of desertified grassland in north-central Ningxia decreased gradually from 8702 km(2) in 1993 to 7485 km(2) in 2011, a decrease of 13.98%; the degree of desertification gradually decreased from 3573 km(2) of severely desertified grassland in 1993 to 1450 km(2) in 2011, a decrease of 59.41%; desertified grassland vegetation was restored rapidly during 2000-2006 and 2006-2011, reducing the total area of desertified grassland annually by 1.87 and 0.61%, respectively; finally, the area of severely desertified grassland decreased annually by 5.78 and 6.28% during 2000-2006 and 2006-2011, respectively. These results show that the region-wide grazing ban, together with other ecological engineering measures, has helped reverse desertification and promote the restoration of grassland vegetation. (C) 2013 Elsevier Inc All rights reserved.


英文关键词Grassland desertification Spectral mixture analysis Spatiotemporal analysis Grazing ban Ningxia
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000326767300003
WOS关键词SPECTRAL MIXTURE ANALYSIS ; VEGETATION CHANGE ; DEGRADATION ; INDICATORS ; SCIENCE
WOS类目Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构中国科学院植物研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179739
作者单位1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Agriinformat, Beijing 100081, Peoples R China;
2.Minist Agr, Grassland Monitoring & Supervis Ctr, Beijing 100125, Peoples R China;
3.Ningxia Grassland Monitoring & Supervis Ctr, Yinchuan 750002, Peoples R China;
4.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714
Li, Jinya,Yang, Xiuchun,Jin, Yunxiang,et al. Monitoring and analysis of grassland desertification dynamics using Landsat images in Ningxia, China[J]. 中国科学院植物研究所,2013,138:19-26.
APA Li, Jinya.,Yang, Xiuchun.,Jin, Yunxiang.,Yang, Zhi.,Huang, Wenguang.,...&Xu, Bin.(2013).Monitoring and analysis of grassland desertification dynamics using Landsat images in Ningxia, China.REMOTE SENSING OF ENVIRONMENT,138,19-26.
MLA Li, Jinya,et al."Monitoring and analysis of grassland desertification dynamics using Landsat images in Ningxia, China".REMOTE SENSING OF ENVIRONMENT 138(2013):19-26.
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