Arid
DOI10.1007/s00477-011-0481-9
The dynamic of vegetation coverage and its response to climate factors in Inner Mongolia, China
Yang, Yang1; Xu, Jianhua1; Hong, Yulian1; Lv, Guanghui2
通讯作者Xu, Jianhua
来源期刊STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
ISSN1436-3240
出版年2012
卷号26期号:3页码:357-373
英文摘要

Normalized Difference Vegetation Index (NDVI) is widely recognized as a good indicator of vegetation productivity. Diagnosing the NDVI trend and understanding climatic factors influences on NDVI can predict the productivity changes under different climatic scenarios. This paper examined NDVI dynamic and its response to climate factors during a 10 year period (1998-2008) in Inner Mongolia. The main findings are as follows: (1) The NDVI multi-scale characters can be revealed well by wavelet transform, and the average NDVI and the NDVI amplitude show a gradually decreased trend from northeast to southwest in Inner Mongolia during the past 10 years, furthermore, this trend is consistent with the heat and water distribution caused by latitude difference in north-south direction and Asia monsoon effect in east-west direction. (2) The relation between NDVI and temperature is the most close, followed by precipitation, sunshine hours and relative humidity. Different vegetation cover types show different strengths in correlation between NDVI and climate variables with the correlation values decreasing from forest, meadow steppe to desert steppe in whole. (3) The precipitation and temperature have the same change cycle, both nearly 290 days in the 20 selected stations. The NDVI has the same change cycle with the precipitation and temperature or either 10 days earlier or later than precipitation and temperature, which supports the significant correlation between NDVI and its climatic factors from a new perspective. The nearly 290 days change cycle implies that the vegetation growth cycle is nearly 10 months and there are no obvious differences change cycles in different vegetations. (4) Vegetation dynamic is significantly correlated to the temperature and precipitation at the time scale of 10, 20, 40, 80, 160, and 320-day, respectively, and the S3 scale (i.e., the time scale of 80-day), nearly 3 months (one season), is most significant and suitable for evaluating the vegetation dynamic to climatic factors.


英文关键词Vegetation coverage NDVI Climate factor Correlation Wavelet transform Inner Mongolia of China
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000300016400004
WOS关键词TIME-SERIES ; WAVELET TRANSFORM ; TERRESTRIAL ECOSYSTEM ; AVHRR DATA ; NDVI DATA ; RAINFALL ; BIOMES ; INDEX ; PRECIPITATION ; TEMPERATURE
WOS类目Engineering, Environmental ; Engineering, Civil ; Environmental Sciences ; Statistics & Probability ; Water Resources
WOS研究方向Engineering ; Environmental Sciences & Ecology ; Mathematics ; Water Resources
来源机构新疆大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175127
作者单位1.E China Normal Univ, Res Ctr EW Cooperat China, Key Lab GISci, Educ Minist PRC, Shanghai 200062, Peoples R China;
2.Xinjiang Univ, Key Lab Oasis Ecol, Educ Minist PRC, Urumqi 830046, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714
Yang, Yang,Xu, Jianhua,Hong, Yulian,et al. The dynamic of vegetation coverage and its response to climate factors in Inner Mongolia, China[J]. 新疆大学,2012,26(3):357-373.
APA Yang, Yang,Xu, Jianhua,Hong, Yulian,&Lv, Guanghui.(2012).The dynamic of vegetation coverage and its response to climate factors in Inner Mongolia, China.STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT,26(3),357-373.
MLA Yang, Yang,et al."The dynamic of vegetation coverage and its response to climate factors in Inner Mongolia, China".STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT 26.3(2012):357-373.
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