【摘要】 利用2000年、2005年TM影像和2008年SPOT影像,对多伦县植被覆盖度进行研究。结果表明:2000-2008年植被低覆盖度减少了1 410 009 km2,占2000年低覆盖度总面积的34.26%;中覆盖度增长了8倍;高覆盖度与2000年相比增长了11倍。由此看出京津风沙源治理工程成效显著。更多还原

【Abstract】 Based on TM image data in 2000 and 2005 and SPOT image data in 2008,the vegetation coverage of Duolun county has been studied.The result shows that the low vegetation coverage has reduced 1 410 009 km2 from 2000 to 2008,taking up 34.26 percent of the total area with low coverage in 2000.Compared with 2000,the medium coverage has increased by 8 times,and the high coverage has increased by 11 times.The result shows that the wind and sand storm control project surrounding Beijing and Tianjin has achieved remarkable success.更多还原