Influence of Climate and Environment Change on Dust Storms in Xinjiang,China
Influence of Climate and Environment Change on Dust Storms in Xinjiang,China
复制标题
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Wei Wenshou
中科院分区：
文献类型：
--
作者：
Wei Wenshou
根据新疆近50年来的气候变化和人类活动的影响，探讨了新疆沙尘暴源区沙漠环境的变化。结果表明，新疆气候正由暖干型向暖湿型转变。20世纪70年代中期以来，气候暖湿化十分明显，尤其是南北疆局地气候变化特征、高寒带与盆地气候变化差异、沃茨面积变化等，都明显地揭示了该干旱区区域气候变化的敏感性。这些因素也揭示了新疆与中东部地区区域气候变化的差异。由于气候波动和人类活动的干扰，干旱区沙尘暴的发生发展直接受降水、空气湿度、下垫面状况等因素的影响。沙尘暴的发生频率和强度与自然条件、气候和沙漠环境的变化以及强迫条件（即，天气系统）的沙尘暴源区。因此，气候变暖是导致干旱区生态环境退化和自然灾害频繁发生的主要原因之一，特别是20世纪80年代后期以来干旱区的风沙灾害，揭示了内陆干旱区是气候变化的敏感区。
The desert environment change in the source areas of dust storms occurring in Xinjiang is discussed based on the climate change and the impacts of human activities in Xinjiang in recent 50 years. The results show that the climate in Xinjiang is changing from warming-drying type to warming-wetting type. The climate warming-wetting is quite obvious since the mid-1970s,especially the sensitivity of the regional climate change in this arid area is obviously revealed by many factors,such as the characteristics of the local climate change in south and north Xinjiang,the difference of climate change in the alpine zones and the basins,and the change of areas of the waters,and these factors also reveal the difference of the regional climate change between Xinjiang and central and eastern areas of China. Because of the climate fluctuation and the disturbance of human activities,the occurrence and development of dust storms are directly affected by the precipitation,air humidity,status of underlying surface,etc. in the arid areas. The occurring frequency and intensity of dust storms are closely related to the natural conditions,change of climate and desert environment as well as the forcing conditions (i.e.,weather systems) in the source areas of dust storms. Therefore,climate warming is one of the main causes resulting in the degeneration of the ecological environment and the frequent occurrence of natural disasters,especially the disasters of sand drift and dust storms in the arid areas since the late-1980s,which reveals that the continental arid areas are the sensitive regions to climate change.