scholarly journals No Consistent Evidence for Advancing or Delaying Trends in Spring Phenology on the Tibetan Plateau

2017 ◽  
Vol 122 (12) ◽  
pp. 3288-3305 ◽  
Author(s):  
Xufeng Wang ◽  
Jingfeng Xiao ◽  
Xin Li ◽  
Guodong Cheng ◽  
Mingguo Ma ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Spring Phenology

Spring phenology outweighed climate change in determining autumn phenology on the Tibetan Plateau

2021 ◽  
Vol 41 (6) ◽  
pp. 3725-3742
Author(s):  
Jie Peng ◽  
Chaoyang Wu ◽  
Xiaoyue Wang ◽  
Linlin Lu
Keyword(s):  
Climate Change ◽  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Spring Phenology

scholarly journals The impacts of soil freeze/thaw dynamics on soil water transfer and spring phenology in the Tibetan Plateau

2018 ◽  
Vol 50 (1) ◽  
pp. e1439155 ◽  
Author(s):  
Huiru Jiang ◽  
Wenjiang Zhang ◽  
Yonghong Yi ◽  
Kun Yang ◽  
Guicai Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Soil Water ◽  
Water Transfer ◽  
The Tibetan Plateau ◽  
Spring Phenology ◽  
Freeze Thaw

scholarly journals Field evidence for earlier leaf-out dates in alpine grassland on the eastern Tibetan Plateau from 1990 to 2006

2014 ◽  
Vol 10 (8) ◽  
pp. 20140291 ◽  
Author(s):  
H. K. Zhou ◽  
B. Q. Yao ◽  
W. X. Xu ◽  
X. Ye ◽  
J. J. Fu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Land Surface ◽  
Alpine Meadow ◽  
Grassland Management ◽  
The Tibetan Plateau ◽  
Spring Phenology ◽  
Ecosystem Responses ◽  
Vegetation Communities ◽  
Alpine Steppe ◽  
Field Evidence

Worldwide, many plant species are experiencing an earlier onset of spring phenophases due to climate warming. Rapid recent temperature increases on the Tibetan Plateau (TP) have triggered changes in the spring phenology of the local vegetation. However, remote sensing studies of the land surface phenology have reached conflicting interpretations about green-up patterns observed on the TP since the mid-1990s. We investigated this issue using field phenological observations from 1990 to 2006, for 11 dominant plants on the TP at the levels of species, families (Gramineae—grasses and Cyperaceae—sedges) and vegetation communities (alpine meadow and alpine steppe). We found a significant trend of earlier leaf-out dates for one species ( Koeleria cristata ). The leaf-out dates of both Gramineae and Cyperaceae had advanced (the latter significantly, starting an average of 9 days later per year than the former), but the correlation between them was significant. The leaf-out dates of both vegetation communities also advanced, but the pattern was only significant in the alpine meadow. This study provides the first field evidence of advancement in spring leaf phenology on the TP and suggests that the phenology of the alpine steppe can differ from that of the alpine meadow. These findings will be useful for understanding ecosystem responses to climate change and for grassland management on the TP.

scholarly journals Spring frost controls spring tree phenology along elevational gradients on the southeastern Tibetan Plateau

2017 ◽  
Author(s):  
Yafeng Wang ◽  
Bradley Case ◽  
Sergio Rossi ◽  
Liping Zhu ◽  
Eryuan Liang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Driving Forces ◽  
Climate Extremes ◽  
The Tibetan Plateau ◽  
Spring Phenology ◽  
Altitudinal Gradients ◽  
Leaf Unfolding ◽  
Spring Frost ◽  
Southeastern Tibetan Plateau ◽  
Spring Frosts

AbstractTemperature is considered to be a main driver of spring phenology, whereas the role of climate extremes (such as spring frosts) has long been neglected. A large elevational gradient of mature forests on the Tibetan Plateau provides a powerful space-for-time ‘natural experiment’ to explore driving forces of spring phenology. Combining 5-yr of in situ phenological observations of Smith fir (Abies georgei var. smithii) with concurrent air temperature data along two altitudinal gradients on the southeastern Tibetan Plateau, we tested the hypothesis that spring frost was a major factor regulating the timing of spring phenology. Onset of bud swelling and leaf unfolding in the study years occurred ≈ 18 or 17 days earlier, respectively, at the lowest (3800 m a.s.l.) elevation relative to upper treelines (4360 or 4380 m a.s.l.). The frequency of freezing events and last freezing date were critical factors in determining the timing of bud swelling along two altitudinal gradients, whereas onset of leaf unfolding was primarily controlled by the onset of bud swelling. This finding provides evidence for detrimental impacts of spring frost on spring phenology, which have been underappreciated in research on phenological sensitivity to climate but should be included in phenology models. It contributes to explain the declining global warming effects on spring phenophases, because climatic extreme events (e.g. spring frosts) tend to increase with warming.

scholarly journals Precipitation impacts on vegetation spring phenology on the Tibetan Plateau

2015 ◽  
Vol 21 (10) ◽  
pp. 3647-3656 ◽  
Author(s):  
Miaogen Shen ◽  
Shilong Piao ◽  
Nan Cong ◽  
Gengxin Zhang ◽  
Ivan A Jassens
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Spring Phenology

Impacts of snow cover duration on vegetation spring phenology over the Tibetan Plateau

2018 ◽  
Vol 12 (3) ◽  
pp. 583-592 ◽  
Author(s):  
Ke Huang ◽  
Jiaxing Zu ◽  
Yangjian Zhang ◽  
Nan Cong ◽  
Yaojie Liu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Snow Cover ◽  
The Tibetan Plateau ◽  
Spring Phenology ◽  
Snow Cover Duration
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