Abstract
In this paper,based on meteorological data from the Zhurihe meteorological station and normalized difference vegetation index(NDVI),leaf area index(LAI),net primary productivity(NPP) in Zhurihe from 2002 to 2010,the characteristics of sand-dust weather and the relationships between land surface conditions and sand-dust weather in zhurihe were analyzed.The threshold wind speed is 9.4 m·s-1 in Zhurihe.The frequency of sand-dust weather and strong wind is fluctuant from 2002 to 2010.Sand-dust weather frequency is positively correlated with strong wind.Wind of more than 18 m·s-1 can easily lead to sand-dust weather.The normalized dust outbreak frequency(NfDO) is defined as the ratio of sand-dust weather frequency to strong wind frequency.NfDO in spring was always low in Zhurihe,when the accumulated precipitation amount from June to August,maximum NDVI,maximum LAI and maximum NPP from June to August during the previous year exceeded their thresholds(100 mm,0.24,0.3 and 0.6 g C·m-2·d-1,respectively).It suggests that the precipitation amount during the vegetation growing season predominantly controls plant production in summer and the land erodibility in spring of the next year and suppress sand-dust outbreak.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
