甘肃敦煌雅丹地质公园区风蚀气候侵蚀力特征

发布时间：2018-03-29 16:15

  本文选题：风蚀气候侵蚀力　切入点：风蚀气候因子指数　出处：《中国沙漠》2017年06期

【摘要】：风蚀气候侵蚀力是潜在风力侵蚀强度的重要表征。基于2013年和2014年风速、降水和空气温度、湿度等气象要素的实地观测数据,对甘肃敦煌雅丹地质公园区的风蚀气候因子指数进行了逐月的计算和分析。结果表明:(1)研究区风蚀气候因子指数为151.98±0.13,是全国的三大极大值区之一;(2)研究区风蚀气候因子指数不同于全国干旱半干旱区基本季节变化特征,夏季最大,春夏季明显高于秋冬季,与新疆和田地区的季节变化特征相似;(3)研究区风蚀气候因子指数具有4—8月持续高值、9月至翌年3月持续低值的月变化特征;(4)风蚀气候因子指数的决定性气象因子是风速,而降水的减弱作用甚微;(5)一般来说,雅丹地貌分布区风蚀气候因子指数≥150。
[Abstract]:Wind erosion climate erosivity is an important indicator of potential wind erosion intensity. Based on field observations of meteorological factors such as wind speed, precipitation and air temperature, humidity in 2013 and 2014, The monthly calculation and analysis of wind erosion climatic factor index in Dunhuang Yadan Geopark area, Gansu Province are carried out. The results show that the wind erosion climatic factor index in the study area is 151.98 卤0.13, which is one of the three maximum value regions in China. The phenological factor index is different from the basic seasonal variation in arid and semi-arid areas of China. Summer is the largest, spring and summer are obviously higher than autumn and winter, Similar to the seasonal variation in Hotan area, Xinjiang, the climatic factor index of wind erosion has a high value in April to August, and a low monthly variation from September to March of the following year) the decisive meteorological factor of the index is wind speed. Generally speaking, the weathering climatic factor index of Yadan geomorphologic distribution area is 鈮，

本文编号：1681884