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    Home > Food News > Food Articles > In 80 years, the line of Salix alpine shrubs on the Qinghai-Tibet Plateau climbed 59.3 meters

    In 80 years, the line of Salix alpine shrubs on the Qinghai-Tibet Plateau climbed 59.3 meters

    • Last Update: 2021-12-02
    • Source: Internet
    • Author: User
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    In 80 years, the line of Salix alpine shrubs on the Qinghai-Tibet Plateau climbed 59.


    Recently, the Ecosystem Pattern and Process Team of the Institute of Tibetan Plateau Research, Chinese Academy of Sciences, and the School of Biology and Environment, Nanjing Forestry University, found that from 1939 to 2010, climate warming led to an increase in the renewal rate of Salix alpine shrubs on the Qinghai-Tibet Plateau, and their spatial distribution range Expansion, this is one of the factors that promote the greening of the Qinghai-Tibet Plateau
    .

    Over the past 80 years, the Salix alpine shrub line on the Qinghai-Tibet Plateau has climbed significantly, with a maximum ascent of 59.
    3 meters and a climbing rate of approximately 5.
    16 meters per 10 years
    .
    In the past 10 years, the regeneration rate of Salix alpine shrubs has shown a downward trend, and the shrub line tends to remain static


    .


    According to Liang Eryuan, the corresponding author of the paper and a researcher at the Institute of Tibetan Plateau Research of the Chinese Academy of Sciences, the alpine shrub line refers to the upper limit of the altitude boundary for the distribution of shrubs
    .
    On the alpine shrub line, the climate is harsh and unstable.


    Such climatic characteristics limit key ecological processes such as shrub growth and regeneration


    The Qinghai-Tibet Plateau has abundant shrubs such as Sabina, Rhododendron, Berberis, Caragana, Salix, Rosa, Potentilla, Sophora, Honeysuckle, Seabuckthorn, Lycium, Spiraea, etc.
    Forest resources form a continuous line of natural shrubs
    .
    Studies have revealed that the Qinghai-Tibet Plateau is home to the highest evergreen cedar shrub line in the world (5280 meters above sea level)


    .


    Based on the data of continuous field surgery examinations in the past 5 years, the research team found that the mountain willow is the most typical deciduous shrub that can form the alpine shrub line, with an altitude of up to 4960 meters
    .
    However, it is still unclear what changes have taken place in the line structure and pattern of willow shrubs on the Qinghai-Tibet Plateau under the background of climate warming


    .


    The first author of the paper, Associate Professor Wang Yafeng, School of Biology and Environment, Nanjing Forestry University, introduced that the research team established 24 mountain willow-shrub line plots along a latitude gradient of nearly 900 kilometers in the eastern part of the Qinghai-Tibet Plateau, and obtained coordinates, plant heights, Base diameter, crown width, age and habitat conditions and other parameters
    .
    Combining climate change and remote sensing satellite data, the system reveals the spatiotemporal pattern of the position and population renewal of the willow shrub line in the past 80 years


    .


    Figure 1 The spatial distribution map of the mountain willow-shrub line plot on the Qinghai-Tibet Plateau ( photo courtesy of the research team)

    (Photo courtesy of the research group)

    Figure 2 The landscape of mountain willow shrubs (top) and shrub line (bottom) on the Qinghai-Tibet Plateau (photo courtesy of the research team)

    Information about the paper: https://doi.


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