| Change characteristics of sandstorm in Gansu Province and its impacts to agriculture |
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| DOI：10.7606/j.issn.1000-7601.2008.06.41 |
| Key Words: sandstorm change characteristics agricultural production Gansu Province |
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| Abstract: |
| Based on the data about sandstorm from 75meteorological stations from 1960～2006 in Gansu Province using the methods of wavelet analysis and correlation the seasonal change characteristics of sandstorm in Gansu Province was analyzed．The results show：Seasonal sandstorm days have declined in recent 47 years and they represent the6－year and9－year periodic oscillation by the wavelet analysis．The sandstorm result in heavy economic damage to agricultural production in Gansu Provincre especially the “5．5 Black Wind” in 1993． Therefore the studies on sandstorm sandstorm damage and how to control monitor and predict sandstorm should be reinforced. |