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首页> 外文期刊>Environmental Monitoring and Assessment >Impacts of climate change and human factors on land cover change in inland mountain protected areas: a case study of the Qilian Mountain National Nature Reserve in China
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Impacts of climate change and human factors on land cover change in inland mountain protected areas: a case study of the Qilian Mountain National Nature Reserve in China

机译：气候变化和人为因素对内陆山区保护区土地覆盖变化的影响-以中国祁连山国家级自然保护区为例

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Over the past few decades, natural reserves have been affected by both climate change and human activities, and their land cover has changed dramatically, especially in mountain reserves, which are more sensitive to climate change and human activities. This paper used long-term Landsat and MODIS NDVI remote sensing data to monitor the changes of land cover and vegetation conditions in the Qilian Mountain National Nature Reserve (QMNNR) in China from 1975 to 2015, and analysed the impacts of climate change and human activities in combination with meteorological and socioeconomic data. The results show that the land cover structure of the QMNNR has remained stable over the past 40years, but the total area of natural vegetation has decreased by 49.55km(2), the artificial surface and cropland has expanded by 13.68 and 32.57km(2) in some areas, respectively, and the glacier has retreated by 33.34km(2) as a whole. The warming and humidification trend of the climate is the leading factor for glacial retreat and the improvement of the overall vegetation condition, while population growth and economic benefits lead to the expansion of cropland and artificial surfaces in some areas, thus causing the reduction of 18.80 and 28.30km(2) in shrubland and grassland. This study proves that the system of protected areas plays a key role in maintaining the stability of the ecosystem structure and that reducing the population density around the protected areas and changing the mode of economic development can effectively reduce the intensity of human interference. Under the background of climate warming, the change of the ecosystem function in mountain protected areas is full of uncertainty, so management and protection strategies need to be studied in depth.
机译：在过去的几十年中，自然保护区受到了气候变化和人类活动的影响，其土地覆盖率发生了巨大变化，特别是在对气候变化和人类活动更为敏感的山区保护区。本文利用长期的Landsat和MODIS NDVI遥感数据监测了1975年至2015年中国祁连山国家级自然保护区（QMNNR）的土地覆盖和植被状况的变化，并分析了气候变化和人类活动的影响结合气象和社会经济数据。结果表明，QMNNR的土地覆盖结构在过去40年中一直保持稳定，但自然植被总面积减少了49.55km（2），人工地表和耕地面积分别增长了13.68和32.57km（2）。在某些地区，冰川整体已退缩33.34 km（2）。气候的变暖和增湿趋势是冰川退缩和整体植被状况改善的主要因素，而人口增长和经济利益导致某些地区的农田和人工地表扩大，从而导致18.80和80。在灌木丛和草地中28.30km（2）。这项研究证明，保护区系统在维持生态系统结构的稳定中起着关键作用，减少保护区周围的人口密度和改变经济发展方式可以有效地减少人为干预的强度。在气候变暖的背景下，山区保护区生态系统功能的变化充满不确定性，因此需要深入研究管理和保护策略。

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