[1]TONG Limian,ZENG Biao,WANG Xin.Phenological Variation of Different Vegetation Types and Its Response to Climate Changes in Shanxi Province from 2000 to 2012[J].Research of Soil and Water Conservation,2016,23(02):194-200.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 02
Page number:
194-200
Column:
Public date:
2016-04-28
- Title:
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Phenological Variation of Different Vegetation Types and Its Response to Climate Changes in Shanxi Province from 2000 to 2012
- Author(s):
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TONG Limian, ZENG Biao, WANG Xin
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College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
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- Keywords:
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MODIS-NDVI; phenology; spatiotemporal features; climate change
- CLC:
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Q948.11;TP79
- DOI:
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- Abstract:
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We reconstructed time-series MODIS-NDVI data of Shanxi Province from 2000 to 2012 by asymmetric Gaussian function and extracted SOG, EOG and LOG of vegetation by dynamic threshold method. We analyzed spatiotemporal variation of different kinds of vegetation phenology and investigated the correlation between vegetation phenology and climate factors (temperature, precipitation and sunshine duration). The result showed that: (1) SOG of vegetation presented the advancing trend, EOG of vegetation showed the delady trend, and LOG of vegetation showed the prolonging trend at various degrees during 13 years in Shanxi Province; (2) the spatial variation of vegetation phenology was obviously different, average phenology of vegetation from south to north in Shanxi Province showed that SOG of vegetation was gradually postponed, EOG of vegetation was gradually advanced and LOG of vegetation was gradually shortened, based on the variation trend, SOG of vegetation showed the advancing trend, EOG of vegetation showed the delayed trend, and LOG of vegetation showed the prolonging trend in most research areas; the region in which SOG of vegetation was advancing, EOG of vegetation was postponing and LOG of vegetation was prolonging mainly distributed in mainstream of Yellow River in the north of Xinshui River, upstream of Fenhe River, Sanggan River and Hutuo River; in contrast, the region in which SOG of vegetation was postponing, EOG of vegetation was advancing and LOG of vegetation was shortening mainly distributed in Guancen Mountain, Hengshan Mountain, Wutai Mountain, Lüliang mountain and the south of Taiyue Mountain; (3) we found that variations of different vegetation phenology events probably were controlled by precipitation and sunshine duration, the response of vegetation phenology to climate change differed among vegetation types; increasing precipitation in spring and shortening sunshine duration in March probably were main reasons for SOG advancing of vegetation besides conifers, and the increasing precipitation and shortening sunshine duration in September probably were main reasons for EOG postponement besides conifers and meadow.