The Influences of Climate Change and Human Activities on Vegetation Dynamics in the Qinghai-Tibet Plateau
Huang, K; Zhang, YJ; Zhu, JT; Liu, YJ; Zu, JX; Zhang, J
2016
Source PublicationREMOTE SENSING
ISSN2072-4292
Volume8Issue:10Pages:-
AbstractGrasslands occupy nearly three quarters of the land surface of the Qinghai-Tibet plateau ( QTP) and play a critical role in regulating the ecological functions of the QTP. Ongoing climate change and human interference have greatly affected grasslands on the QTP. Differentiating human-induced and climate-driven vegetation changes is vital for both ecological understanding and the management of husbandry. In this study, we employed statistical analysis of annual records, various sources of remote sensing data, and an ecosystem process model to calculate the relative contribution of climate and human activities to vegetation vigor on the QTP. The temperature, precipitation and the intensity and spatial pattern of livestock grazing differed between the periods prior to and after the year 2000, which led to different vegetation dynamics. Overall, increased temperature and enhanced precipitation favored vegetation growth. However, their combined effects exhibited strong spatial heterogeneity. Specifically, increased temperature restrained vegetation growth in dry steppe regions during a period of slightly increasing precipitation from 1986 to 2000 and in meadow regions during a period of precipitation decline during 2000-2011, thereby making precipitation a dominant factor. An increase in precipitation tended to enhance vegetation growth in wet meadow regions during warm periods, and temperature was the limiting factor in Tibet during dry periods. The dominant role played by climate and human activities differed with location and targeted time period. Areas dominated by human activities are much smaller than those dominated by climate. The effects of grazing on grassland pasture were more obvious under unfavorable climate conditions than under suitable ones.
SubtypeJournal
Keywordgrassland climate change grazing contribution multiple standardize regression
Subject AreaRemote Sensing
WOS Subject ExtendedRemote Sensing
WOS KeywordNET PRIMARY PRODUCTIVITY ; ATMOSPHERIC HEAT-SOURCE ; NDVI TIME-SERIES ; ALPINE GRASSLAND ; NORTHERN-TIBET ; TREND ANALYSIS ; LAND DEGRADATION ; WEAKENING TREND ; COVER CHANGES ; CHINA
Indexed BySCI
Language英语
WOS IDWOS:000387357300090
PublisherMDPI AG
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44174
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Huang, K,Zhang, YJ,Zhu, JT,et al. The Influences of Climate Change and Human Activities on Vegetation Dynamics in the Qinghai-Tibet Plateau[J]. REMOTE SENSING,2016,8(10):-.
APA Huang, K,Zhang, YJ,Zhu, JT,Liu, YJ,Zu, JX,&Zhang, J.(2016).The Influences of Climate Change and Human Activities on Vegetation Dynamics in the Qinghai-Tibet Plateau.REMOTE SENSING,8(10),-.
MLA Huang, K,et al."The Influences of Climate Change and Human Activities on Vegetation Dynamics in the Qinghai-Tibet Plateau".REMOTE SENSING 8.10(2016):-.
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