文献类型: 外文期刊
第一作者: Xu, B
作者: Xu, B;Chen, ZX;Qin, ZH;Liu, J;Yang, XC;Xin, XP
作者机构:
关键词: climate change;geographic information system;future climate conditions
期刊名称:IGARSS 2005: IEEE International Geoscience and Remote Sensing Symposium, Vols 1-8, Proceedings
ISSN:
年卷期: 2005 年
页码:
收录情况: SCI
摘要: Global climate change has influenced the environments in which we human beings live. We examine the applicability of GIS spatial analysis technology in assessment of climate change. Using GIS, we establish several climatic data layers through analysis and process of the climate data from 1,915 weather stations and points. Some conclusions are drawn: 1) By the year of 2030 and 2050, the number of regions in which the average climate temperature is less than 0 degrees C would have been decreased obviously, and 9.10% and 11.05% of the terrestrial proportion are decreased respectively. The terrestrial proportion in which the average temperature is above 0 degrees C will be increased in future. The rate of the increase for that of 0 to 12 degrees C will not be significant. The number of the regions in which the temperature will be above 12 degrees C would be increased at the rate of 7.53% and 9.72% respectively. 2) The changing tendency for the temperature zone on which the accumulated temperature is equal and above 10 degrees C is that the proportion of the moderate zone will decrease and on the contrary the proportion of the subtropical and tropical zone will increase. The increase and the decrease in those correspondent areas form a balance. To each temperature zone the increase and decrease of the area is a dynamic process. The global increase of the temperature causes the shift of the bound of the temperature zone and that will exert great influence to the ecosystem, which has been generated through the long process of adapting to the local climate. 3) The general tendency for the climate shifts in future is that the and and semiarid areas will he decreased while the humid and sub-humid areas will show a tendency of increase. By 2030 and 2056 the and zone on which the annual rainfall is lower than 200mm will be decreased at the rate of 0.75% and 3.76% respectively. The humid zone will increase 2.86% and 2.67% respectively. The distribution of certain types of plants to which the rainfall is crucial will be influenced accordingly.
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