Effect of Ecological Construction Engineering on Vegetation Restoration: A Case Study of the Loess Plateau

Since the 1980s, with rapid economic development and increased attention given to ecological protection, China has launched a series of ecological-restoration programs restore local environment through afforestation natural forest protection. The evaluation vegetation restoration is an important part evaluating effectiveness restoration. Loess Plateau area where problems are concentrated, it key construction in China. This paper takes as research area, using remote sensing geographic information technology combined ecosystem structural changes improved residual model study following main conclusions were drawn: (1) From 1990 2000, farmland by 3084.81 km2, resulting encroachment large grassland shrubland. (2) With implementation engineering, returning reached 18,001.88 km2; this period, NDVI rapidly, that comprised 91.90% total which significant increase 65.78%. quality was restored great extent, engineering played major role stage. (3) Under background large-scale restoration, urban continues expand.