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Comparative analysis of the mass elevation effect and its implication for the treeline between the Tibetan and bolivian plateaus based on solar radiation

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Journal of Mountain Science 2022年第4期19卷 1082-1094页

作者： YAO Yong-hui SUO Nan-dong-zhu ZHANG Yi-chi State Key Laboratory of Resource and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Qinghai National Park Scientific Research Monitoring and Evaluation CenterXining 810000China

As one of the main non-zonal factors,the mass elevation effect(MEE)has significant impacts on both regional climates and mountain ecological *** recent years,with the development of quantitative techniques and methods,quantitative studies on the MEE and its implication on mountain altitudinal belts have developed ***,some issues have not been solved yet,such as high errors in spatial temperature estimations and difficulties in the definition and extraction of intramountain base ***,there is still a lack of comparative studies on the MEE and its influence on treelines and snowlines as most studies were conducted on specific mountains or *** compare the MEE magnitudes of the Tibetan plateau(TP)and the bolivian plateau(BP),we estimated the correspondent air temperatures and simulated the solar radiations based on MODIS surface temperature,station observation,and treeline ***,we analyzed the elevation of the 10℃isotherms on the two plateaus,the temperatures at the same elevation,and the solar *** to the mechanism of the MEE and the relationship of solar radiation and treeline,we constructed treeline models for the two plateaus through a stepwise regression analysis by considering several influencing factors of the MEE(e.g.,air temperature and precipitation)and using solar radiation as its *** results showed that:(1)the MEE magnitude on the TP is equivalent to that on the BP although the former is slightly higher than the latter;(2)the MEE strongly influences the highest treelines in the northern and southern hemispheres,which both occur on the two ***,the treeline distribution models based on solar radiation had higher accuracies than those models with parameters of temperature and precipitation(the adjusted R^(2) values were 0.76 for the TP and 0.936 for the BP),indicating that solar radiation can be used to quantify the MEE and its implications on ***,the results of this

关键词： Tibetan plateau bolivian plateau Mass elevation effect Solar radiation Treeline Temperature

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