本文選題：風(fēng)蝕氣候侵蝕力　切入點：風(fēng)蝕氣候因子指數(shù)　出處：《中國沙漠》2017年06期

【摘要】：風(fēng)蝕氣候侵蝕力是潛在風(fēng)力侵蝕強度的重要表征。基于2013年和2014年風(fēng)速、降水和空氣溫度、濕度等氣象要素的實地觀測數(shù)據(jù),對甘肅敦煌雅丹地質(zhì)公園區(qū)的風(fēng)蝕氣候因子指數(shù)進(jìn)行了逐月的計算和分析。結(jié)果表明:(1)研究區(qū)風(fēng)蝕氣候因子指數(shù)為151.98±0.13,是全國的三大極大值區(qū)之一;(2)研究區(qū)風(fēng)蝕氣候因子指數(shù)不同于全國干旱半干旱區(qū)基本季節(jié)變化特征,夏季最大,春夏季明顯高于秋冬季,與新疆和田地區(qū)的季節(jié)變化特征相似;(3)研究區(qū)風(fēng)蝕氣候因子指數(shù)具有4—8月持續(xù)高值、9月至翌年3月持續(xù)低值的月變化特征;(4)風(fēng)蝕氣候因子指數(shù)的決定性氣象因子是風(fēng)速,而降水的減弱作用甚微;(5)一般來說,雅丹地貌分布區(qū)風(fēng)蝕氣候因子指數(shù)≥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 鹵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，

本文編號：1681884