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<p><strong>Abstract.</strong> The establishment of grasslands on abandoned cropland has been proposed as an effective method to mitigate climate change. In this study, five cultivated grasslands (three leguminous species and two gramineous species), one abandoned cropland, and one natural grassland were studied to examine how soil organic carbon (SOC) sequestration rate and sequestration efficiency change in a semi-arid area in China. Our results showed that leguminous grasslands had greaterdoi:10.5194/se-8-83-2017 fatcat:qiffpnwfejeypmod7xyewu7gpe