Research Progress on Aeolian Desertification Process and Controlling in North of China

The National Key Basic Project(973) \!Process and Controlling of Aeolian Desertification in North China\(2000048700) has got the following research results: has reestablished the development,succession,situation and driving mechanism of aeolian desertification in North China during late 2000 years;has disclosed the physical mechanism of soil wind erosion and sand-dust moving;has determined the wind erosion tolerance capacity of soil;has found the formation mechanism,distribution rule and impact of wind blown electrify field;has set up the quantity evaluating system;has confirmed the source area,moving route and formation mechanism of sand-dust,and has established the monitoring,forecasting and for-alarming method and system of sand-dust storm;has studied the attenuation law of C,N in soil and its influence on desert vegetation;has showed the harmed process,adapted countermeasure and recover mechanism of vegetation during aeolian desertification process;has clarified the process,cause,status and development and trend of aeolian desertification in North China during late 50 years;quantificationally showed the spatial distribution and change of aeolian desertification,and has put forward the model and countermeasures of controlling aeolian desertification and coordinating the social economy and environment in typical areas.These results from the project provide the scientific theory for government to control aeolian desertification and make the strategy of sustainable development of arid regions economy and eco-environment,and also has enriched and developed the theory system of Desert Science.