Abstract: Scientific assessment of the ecological effects of ecological project is of great significance.On the basis of long time series of remote sensing data,we analyzed the spatiotemporal variation characteristics and driving factors of the pattern and quality of ecosystem and major ecosystem services in the Natural Forest Protection Project(NFPP) area from 2000 to 2015.Results showed that:1) In recent 15 years,areas of forest,water body,wetland,and settlement ecosystems expanded,while the area of grassland ecosystem shrinked.2) Vegetation coverage and net primary productivity both showed improvement trend with an increasing rate of 0.27%/a and 3.82 g/(m²·a),respectively.3) Except that the water source conservation service remained stable,the soil conservation and sand fixation services of ecosystem both improved with the variation slope being 1.00 t/(hm²·a) and 1.25 t/(hm²·a),respectively.(4) The warming and wet trend of regional climate promotes vegetation restoration.Population density and human disturbance index both increased.In conclusion,the ecological environment of the NFPP has been overall improved.Differentiated ecological restoration and management should be emphasized in subsequent ecological project.

Key words: natural forest protection project, ecosystem pattern, ecosystem quality, ecosystem service, driving factor