Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1088/1748-9326/8/3/035033 |
Vegetation response to extreme climate events on the Mongolian Plateau from 2000 to 2010 | |
John, Ranjeet1; Chen, Jiquan1,2; Ou-Yang, Zu-Tao1; Xiao, Jingfeng3; Becker, Richard1; Samanta, Arindam4; Ganguly, Sangram5,6; Yuan, Wenping7; Batkhishig, Ochirbat8 | |
通讯作者 | John, Ranjeet |
来源期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2013 |
卷号 | 8期号:3 |
英文摘要 | Climate change has led to more frequent extreme winters (aka, dzud) and summer droughts on the Mongolian Plateau during the last decade. Among these events, the 2000-2002 combined summer drought-dzud and 2010 dzud were the most severe on vegetation. We examined the vegetation response to these extremes through the past decade across the Mongolian Plateau as compared to decadal means. We first assessed the severity and extent of drought using the Tropical Rainfall Measuring Mission (TRMM) precipitation data and the Palmer drought severity index (PDSI). We then examined the effects of drought by mapping anomalies in vegetation indices (EVI, EVI2) and land surface temperature derived from MODIS and AVHRR for the period of 2000-2010. We found that the standardized anomalies of vegetation indices exhibited positively skewed frequency distributions in dry years, which were more common for the desert biome than for grasslands. For the desert biome, the dry years (2000-2001, 2005 and 2009) were characterized by negative anomalies with peak values between -1.5 and -0.5 and were statistically different (P < 0.001) from relatively wet years (2003, 2004 and 2007). Conversely, the frequency distributions of the dry years were not statistically different (p < 0.001) from those of the relatively wet years for the grassland biome, showing that they were less responsive to drought and more resilient than the desert biome. We found that the desert biome is more vulnerable to drought than the grassland biome. Spatially averaged EVI was strongly correlated with the proportion of land area affected by drought (PDSI < -1) in Inner Mongolia (IM) and Outer Mongolia (OM), showing that droughts substantially reduced vegetation activity. The correlation was stronger for the desert biome (R-2 = 65 and 60, p < 0.05) than for the IM grassland biome (R-2 = 53, p < 0.05). Our results showed significant differences in the responses to extreme climatic events (summer drought and dzud) between the desert and grassland biomes on the Plateau. |
英文关键词 | Mongolian Plateau vegetation indices extreme climate drought land surface temperature MODIS EVI EVI2 dzud |
类型 | Article |
语种 | 英语 |
国家 | USA ; Peoples R China ; Mongolia |
收录类别 | SCI-E |
WOS记录号 | WOS:000325247100078 |
WOS关键词 | ATMOSPHERIC CIRCULATION ; INNER-MONGOLIA ; LAND-USE ; DROUGHT ; VARIABILITY ; CHINA ; INDEX ; TRENDS ; PRECIPITATION ; SENSITIVITY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
来源机构 | 北京师范大学 ; 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/2XILL650/176999 |
作者单位 | 1.Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA; 2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China; 3.Univ New Hampshire, Inst Study Earth Oceans & Space, Earth Syst Res Ctr, Durham, NH 03824 USA; 4.Atmospher & Environm Res Inc, Boston, MA USA; 5.Bay Area Environm Res Inst, Moffett Field, CA 94035 USA; 6.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 7.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China; 8.Mongolian Acad Sci, Inst Geog, Ulaanbaatar 210620, Mongolia |
推荐引用方式 GB/T 7714 | John, Ranjeet,Chen, Jiquan,Ou-Yang, Zu-Tao,et al. Vegetation response to extreme climate events on the Mongolian Plateau from 2000 to 2010[J]. 北京师范大学, 中国科学院植物研究所,2013,8(3). |
APA | John, Ranjeet.,Chen, Jiquan.,Ou-Yang, Zu-Tao.,Xiao, Jingfeng.,Becker, Richard.,...&Batkhishig, Ochirbat.(2013).Vegetation response to extreme climate events on the Mongolian Plateau from 2000 to 2010.ENVIRONMENTAL RESEARCH LETTERS,8(3). |
MLA | John, Ranjeet,et al."Vegetation response to extreme climate events on the Mongolian Plateau from 2000 to 2010".ENVIRONMENTAL RESEARCH LETTERS 8.3(2013). |
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