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Increased human pressures on the alpine ecosystem along the Qinghai-Tibet Railway

机译：沿青藏铁路沿着青藏高山生态系统的人类压力增加

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摘要

Construction of the Qinghai-Tibet Railway (QTR) increased the links between inland China and the Qinghai-Tibet Plateau (QTP). The QTR accelerated surrounding tourism, boosted the local economy and led to rapid development of livestock raising. To assess how distance from the railway and different regions has influenced the impact of the QTR on the alpine ecosystem, human footprint maps were produced to indicate human pressures, and the normalized difference vegetation index (NDVI), an index of vegetation greenness, was used to characterize the growth of alpine vegetation. The construction and operation of the QTR have increased human pressures, while the establishment of nature reserves has effectively reduced human pressures. The QTR contributes significantly to the increased human pressures in the Tibetan region compared with the Qinghai region and exerts negative impacts on alpine vegetation. Although the warmer and wetter climate trend has proven beneficial in enhancing alpine vegetation greenness, the declining trend of alpine vegetation has been stronger in regions with more intensive human pressures, especially in the grazing areas and the tourist areas around Lhasa. These results suggest that the impact of the QTR on alpine vegetation in Tibet is greater than that in Qinghai and that the spatial extent of the indirect impact of the QTR in Tibet is confined to approximately 30 km from the railway. These results will provide guidance and a theoretical basis for the protection of the alpine environment on the QTP under intensified anthropogenic influence.
机译：青藏铁路（QTR）建设增加了内陆中国与青藏高原（QTP）之间的联系。 QTR加速了周边旅游，推动了当地经济，并导致畜牧业的快速发展。为了评估铁路和不同地区的距离影响QTR在高山生态系统上的影响，产生人的足迹图以表明人类压力，并使用归一化差异植被指数（NDVI），植被绿色指数。表征高山植被的生长。 QTR的建设和运营增加了人类压力，而自然保护区的建立有效降低了人类压力。 QTR与青海地区相比，西藏地区的人类压力增加了显着贡献，对阿尔卑斯植被产生负面影响。虽然温暖和潮湿的气候趋势已被证明有益于增强高山植被的绿色，但高山植被的下降趋势在具有更强烈的人类压力的地区较强，特别是在拉萨周围的放牧地区和旅游区。这些结果表明，QTR对西藏高山植被的影响大于青海的植被，西藏QTR间接影响的空间程度距离铁路约30公里。这些结果将为在强化的人为影响下提供指导和保护QTP上的高山环境的理论依据。

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  • 来源
    《Regional Environmental Change》 |2020年第1期|33.1-33.13|共13页
  • 作者

    Luo Lihui; Duan Quntao; Wang Lixin; Zhao Wenzhi; Zhuang Yanli;

  • 作者单位

    Chinese Acad Sci Linze Inland River Basin Res Stn Key Lab Inland River Basin Ecohydrol Northwest Inst Ecoenvironm & Resources Lanzhou 730000 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Linze Inland River Basin Res Stn Key Lab Inland River Basin Ecohydrol Northwest Inst Ecoenvironm & Resources Lanzhou 730000 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    IUPUI Dept Earth Sci Indianapolis IN 46202 USA;

    Chinese Acad Sci Linze Inland River Basin Res Stn Key Lab Inland River Basin Ecohydrol Northwest Inst Ecoenvironm & Resources Lanzhou 730000 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Linze Inland River Basin Res Stn Key Lab Inland River Basin Ecohydrol Northwest Inst Ecoenvironm & Resources Lanzhou 730000 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|IUPUI Dept Earth Sci Indianapolis IN 46202 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Alpine ecosystem; Qinghai-Tibet Railway; Human footprint; Vegetation greenness; Impact assessment;

    机译：高山生态系统;青藏铁路;人占地面积;植被绿色;影响评估;

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