Nutrient resorption is a key component of nutrient conservation strategies and productivity and element cycling in ecosystems. It influences many, if not most, ecosystem processes, including carbon cycling and resource鄄use efficiency, plant litter decomposition through changes in litter quality, and plant competition. We studied 15 species of evergreen woody plants and 14 species of deciduous woody plants in a limestone area in Chongqing; compared leaf dry matter content (LDMC) , specific leaf area (SLA) , and leaf thickness (LT) of two different types of plants before and after leaf senescence; and analysed leaf nutrients and resorption characteristics before and after senescence by using different calculation methods (nutrient content per unit mass and leaf nutrient content per unit area). Finally, we analysed the correlation between nutrient resorption efficiency and other leaf traits. The results showed that LDMC and LT were significantly higher in the mature leaves of evergreen species than in those of deciduous species in the Chongqing karst area.

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