1. Error assessment of visual estimation plant coverage;Zhang;Journal of Beijing Normal University (Natural Science),2001
2. The role of remote sensing technology in the research of China’s resources and environmental changes;Bu;Science and Technology Review,1997
3. Estimating vegetation coverage change using remote sensing data in Haidian district Beijing;Chen;Acta Phytoecologica Sinica,2001
4. Wavi-type time series variation of the correlation between NDVI and climatic factors;Bi;Chinese Journal of Applied Ecology,2005
5. Relation between the fractional vegetation cover change and rainfall in the yellow river basin;Sun;Acta Geographica Sinica,2001