Abstract: To carry out the national strategic deployment for addressing climate change,promote the transformation of low carbon city,mitigate and adapt to climate change,an assessment indicator system for the Carbon Sink City with the goal of “Lucid waters and lush mountains are invaluable assets” was developed.A total number of 32 indicators were divided into two sets,which are management assessment indicator and quantitative assessment indicator respectively.The “Ratio of carbon sink and carbon source” indicator creatively was proposed.Tested in Taishun county of Zhejiang Province and Chongli county of Hebei Province,the indicator system is considered to be scientific and operable.This study is of great significance to promoting the ecological environment improvement for our country and cities,eco-civilization construction and sustainable development with green and low carbon.

Key words: carbon sink, carbon sink city, carbon source, management assessment indicator, quantitative assessment indicator