[1]LI Dan,WU Xiuqin,ZHANG Jingzhou,et al.Vegetation Phenology Change and Response to Climate Change in the Karst Faulted Basin of Southwest China[J].Research of Soil and Water Conservation,2020,27(06):168-173.
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Vegetation Phenology Change and Response to Climate Change in the Karst Faulted Basin of Southwest China
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
168-173
Column:
目次
Public date:
2020-10-20
- Title:
- Vegetation Phenology Change and Response to Climate Change in the Karst Faulted Basin of Southwest China
- Keywords:
- karst faulted basin; vegetation phenology; climate change; NDVI
- CLC:
- K903; Q142.2
- DOI:
- -
- Abstract:
- In order to understand the vegetation phenology pattern and explore the driving mechanism of vegetation phenology change in karst faulted basin, based on the 250 m product data of MOD13Q1 from 2001 to 2016, three vegetation phenological indices(the start of the growing season, the end of the growing season, the length of the growing season)were estimated to study the vegetation phenological changes by using TIMESAT model in southwest karst faulted basin. And then the main factors affecting phenology change were analyzed. The results showed that:(1)from 2001 to 2016, SOS of karst basin of southwest China experienced a delay of 7.7 d/decade, EOS experienced a delay of 10 d/decade, and LOS prolonged 2.3 d/decade;(2)the change of SOS in the research area reflected postponement in the west and advance in the east; the areas with significant advance trend concentrated in the Yunnan-Guizhou border of the eastern research area; in most regions, EOS presented the delay trend, but in a few regions, EOS presented the advance trend, such as Anning River valley, Muli low-elevation valley;(3)the response of phenological index to temperature and precipitation was different; in general, SOS was more strongly affected by climate factors than EOS; the influence of spring temperature and precipitation on SOS was generally greater than that in other seasons in the whole study area; the delay of SOS was mainly affected by the temperature rise in spring; summer precipitation had a great influence on EOS, which reflected that precipitation had a certain time lag on plant growth. Under the climate background of increasing temperature and humidity, phenological indexes of faulted basins show the spatial differentiation of the early pattern in east and the later pattern in west and indicate the delayed response relationship with climate change. Water is the main factor limiting vegetation growth, and mainly presents the impact on vegetation in the spring and summer.
- References:
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Last Update:
2020-10-20