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author:

Qiu, Bingwen (Qiu, Bingwen.) [1] (Scholars:邱炳文) | Feng, Min (Feng, Min.) [2] | Zhong, Ming (Zhong, Ming.) [3] | Tang, Zhenghong (Tang, Zhenghong.) [4] | Chen, Chongcheng (Chen, Chongcheng.) [5] (Scholars:陈崇成)

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Abstract:

This paper aims to improve our knowledge of the complex vegetation-climate relationship in subtropical humid region in the context of global warming, by taking into considerations of spatio-temporal variation of both vegetation and climate change. A multi-resolution analysis (MRA) based on the wavelet transform (WT) is applied to examine the vegetation growth and its relationship with climate factors based on 250m 16-day composites MODIS vegetation EVI dataset in subtropical humid region of China over the period 2001-2010. A general greening up (68%) was observed over the period 2001-2010, as well as rather local negative trends. A trend toward global warming was also observed for the whole study region, whereas no obvious trend of precipitation is examined in most areas. Temperature generally has a positive influence on vegetation; with only very few negative EVI-temperature coefficients observed on the south portion principally due to changes in land use, land degradation, and cloud noise. However, nearly equally positive and negative EVI-rainfall relationship is observed on the inter-annual level, with negative coefficients principally observed in the northwest portion with abundant precipitation. Very strong positive relationship is observed between both EVI-temperature and EVI-precipitation at seasonal level. It is revealed that spatio-temporal variation of both vegetation and climate should be taken into considerations when analyzing the long-term effects of global climate change. Interactions between vegetation dynamics and climate variability must be studied through spatially and temporally explicit multi-scale analysis to investigate the influence of long-term climate change on the vegetation growth. © 2015 IEEE.

Keyword:

Climate change Clustering algorithms Data mining Global warming Land use Precipitation (meteorology) Tropics Vegetation Wavelet transforms

Community:

  • [ 1 ] [Qiu, Bingwen]Spatial Information Research Centre of Fujian Province, Fuzhou University, Fuzhou, Fujian; 350002, China
  • [ 2 ] [Feng, Min]Spatial Information Research Centre of Fujian Province, Fuzhou University, Fuzhou, Fujian; 350002, China
  • [ 3 ] [Zhong, Ming]Spatial Information Research Centre of Fujian Province, Fuzhou University, Fuzhou, Fujian; 350002, China
  • [ 4 ] [Tang, Zhenghong]Community and Regional Planning Program, University of Nebraska-Lincoln, Lincoln; NE; 68558, United States
  • [ 5 ] [Chen, Chongcheng]Spatial Information Research Centre of Fujian Province, Fuzhou University, Fuzhou, Fujian; 350002, China

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Year: 2015

Page: 93-98

Language: English

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 2

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