Study on Vegetation Fraction Cover Retrieval over Chuxiong Prefecture from TM Imagery

The paper retrieved vegetation fraction cover over Chuxiong Prefecture from TM Imagery by dimidiate pixel model on February 19h, 2003. The results showed that the mean vegetation fractional cover in Chuxiong prefecture was 0.400117, it’s secondary area mean vegetation fractional cover from large to small were Lufen county, Shuangbai county,Chuxiong city, Yaoan county, Dayao county, Wuding county, Nanhua county, Yongren county, Mouding county, Yuanmou county.

Dynamic Monitoring of Vegetation Coverage in Daliuta Mine Based on ENVI and GIS Technology

Researching dynamic variation of vegetation coverage has positive significance for vegetation restoration and ecological reconstruction. Landsat TM/ETM+ remote sensing data of the 2002, 2005, 2007, 2009 and 2011 was analyzed by ENVI and GIS technology, divided the vegetation coverage into 6 grades based on dimidiate pixel model, concluded the variation of ecological environment based on transfer matrix method, taked the Daliuta Mine as a case. The results indicated that average vegetation coverage in Daliuta Mine has increased integrally, and vegetation coverage changed from low, medium low and medium to medium and medium high, the vegetation coverage has somewhat. The dynamic monitoring of vegetation coverage can effectively reflect the variation of ecological environment in Daliuta Mine. This study provided a theoretical basis for the ecological reconstruction and sustainable development of Daliuta Mine.

Vegetation Fraction Change Monitoring in Beijing by Remote Sensing

Vegetation fraction was a most important index to score the vegetation coverage on the land surface. Improved dimidiate pixel model was applied to calculate and analyze the vegetation fraction change from September 2000 to September 2013 in Beijing, China. The results showed that vegetation coverage of Beijing in 2013 year was much better than 2000 year. The area of low and middle-low coverage of Beijing in 2013 decreased 379 km2 and 591 km2 respectively, and the area of high and middle coverage increased 885 km2 and 85 km2 respectively. The research provided a necessary reference for the related researches of vegetation fraction.