With significant impacts of climate change, the water amount and lake-marsh pattern has varied in the lake-marsh wetland system, which would damage the
ecological functions. Therefore, several regulation projects were implemented in the natural system, their advantages need to be proved. The Wolonghu Wetlands were applied as an example for exploring the effects of regulation projects on the carbon sequestration potential and corresponding ecological service value. The main results show that the water volume in the Wolonghu Wetlands has basically decreased during 1994 to 2013 as the natural runoff reduced, which further influenced the lake-marsh pattern as the wetland area
decreased. The carbon sequestration potential without and with regulation projects was 1,135,900.34 t/a and 1,341,823.80 t/a, respectively. The ecological service value of carbon sequestration potential without and with regulation projects was 8.75 billion yuan/a and 10.33 billion yuan/a, respectively. The carbon sequestration potential and corresponding ecological service value
with regulation projects was 18.13% and 18.6% greater than without regulation projects, respectively. It can be inferred that appropriate regulation projects could increase the carbon sequestration potential and corresponding ecological value of the lake-marsh wetland system, which was proved an efficiency approach facing to climate change on achieving the goal of low-carbon development.