Relationship between the spatial and temporal distribution of snow depth and the terrain over the Tibetan Plateau
BAI Shuying1,2, WU Qi1, SHI Jianqiao3, GU Haimin4
1. College of Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2. Nanjing Institute of Environmental Science, Ministry of Environmental Protection, Nanjing 210042, China; 3. Unit 61, No.94783 Troop of PLA, Changxing 313111, China; 4. Meteorological Bureau of Fuling District, Fuling 408000, China
Abstract：Using the daily dataset of snow depth from 1979 to 2010, the authors analyzed the relationship between the spatial and temporal distribution of snow depth and the terrain factors over the Tibetan Plateau by means of Mann-Kendall test and GIS space analysis. According to the results achieved, the distribution of snow depth was significantly affected by topography, the average snow depth was affected mainly by elevation from May to September, whereas in other months it was under the common influence of temperature and elevation. The snow depth amplitude of the same segment elevation reflected the impact of the aspect on snow depth, and the influence was greater when the amplitude was wider. The maximum snow depth kept increasing with the increment of elevation and slope, while the spatial heterogeneity decreased with the increment of elevation but increased with the decrement of slope. From October to May of the next year, the average snow depth at the elevation from 82 to 2 482 meter and 6 082 to 7 682 meter was more affected by slope and aspect than that at the elevation from 2 482 to 6 082 meter. Multiple regression analysis showed that the distribution of snow depth over the Tibetan Plateau was influenced by elevation and slope; furthermore, spatial differences of slope at the elevation of 82~3 282 meter had significant positive effect on the spatial variability of average snow depth; nevertheless, elevation was the main limiting factor of the average snow depth.
白淑英, 吴奇, 史建桥, 顾海敏. 青藏高原积雪深度时空分布与地形的关系[J]. 国土资源遥感, 2015, 27(4): 171-178.
BAI Shuying, WU Qi, SHI Jianqiao, GU Haimin. Relationship between the spatial and temporal distribution of snow depth and the terrain over the Tibetan Plateau. REMOTE SENSING FOR LAND & RESOURCES, 2015, 27(4): 171-178.
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2015, Vol. 27 
