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Spatial–temporal variation of land use and land cover change in the glacial affected area of the Tianshan Mountains
Catena ( IF 5.4 ) Pub Date : 2021-03-03 , DOI: 10.1016/j.catena.2021.105256
Hong Wei , Liyang Xiong , Guoan Tang , Josef Strobl , Kaikai Xue

During the past decades, land use/land cover change (LUCC) has occurred in the glacial affected areas at unpredictable rates driven by natural and human factors. Monitoring and identifying the spatial and temporal land cover changes and driving forces in this unique type of region provides a scientific basis for understanding the changing process of the Earth's surface, helping to reveal the impact of climate change and human activities on LUCC. In this study, the Tianshan Mountains (TSMs), which are located in the hinterland of Eurasia, were selected to investigate the LUCC of its typical glacial affected areas that have significant regional particularities. LUCC processes in the TSMs in China over the past 35 years were analyzed using a dynamic change model, a landscape pattern index, a centroid transfer model, and geoinformation Tupu based on the land use data of 1980, 1990, 2000, and 2015. The results show that the areas of cultivated and built-up lands immensely increased by 45.87% and 187.10%, respectively. Correspondingly, the areas of bare land and ice and snow cover decreased by 26.76% and 37.93%, respectively. The land use change in the TSMs was characterized by different stages, and high conversion rates and intensities were obtained from 2000 to 2015. The landscape change was mainly reflected in the significant increase in the number of patches and the simplification and regularization of patch shapes. The spatial connectivity of different land use types also increased. The temperature and precipitation in the region showed increasing trends, and the melting rate of ice and snow cover significantly accelerated. This study can help achieve a dynamic LUCC model to investigate the interacting influences of climate change and human activities in glacial affected areas.



中文翻译:

天山冰川影响区土地利用和土地覆被变化的时空变化

在过去的几十年中,冰川影响地区的土地利用/土地覆被变化(LUCC)以自然和人为因素驱动的不可预测的速度发生。监测和识别这种独特类型区域的时空土地覆盖变化和驱动力,为了解地球表面变化过程提供了科学依据,有助于揭示气候变化和人类活动对LUCC的影响。在这项研究中,选择位于欧亚大陆腹地的天山山脉(TSMs)来调查其典型的冰川显着地区的LUCC,这些地区具有明显的区域特殊性。使用动态变化模型,景观格局指数,质心转移模型,根据1980年,1990年,2000年和2015年的土地利用数据,图普的地理信息和土浦信息。结果表明,耕地和建成地的面积分别大幅增加了45.87%和187.10%。相应地,光秃秃的土地面积和冰雪覆盖面积分别减少了26.76%和37.93%。TSM的土地利用变化具有不同的阶段特征,从2000年到2015年获得了较高的转化率和强度。景观变化主要反映在斑块数量的显着增加以及斑块形状的简化和规范化上。不同土地利用类型的空间连通性也有所提高。该地区的温度和降水呈上升趋势,冰雪覆盖的融化速度明显加快。

更新日期:2021-03-03
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