Abstract: Urban river ecosystem is composed of two subsystems, i.e., river water and riparian area, and provides many resources and eco-services to human society. In China, the ecological construction and management of urban river is still at the beginning, and it is of great importance to exactly define ecological river and establish relevant evaluation index system. This paper expatiated on the characteristics of urban ecological river, and, based on the features of ecological construction of urban rivers in China, established an evaluation system containing 5 primary indices and 23 secondary indices, and first put forward the urban river ecological conformity index (URECI). Taking Shanghai as a case, 9 urban rivers were analyzed to evaluate their ecological conformity degree. The 9 urban rivers had a URECI of 5.60-17.25, among which, the Xinjiangwan Town River Network had the outstanding level of ecological conformity, the Zhengyicun River, Dianpu River, Dayucun River, and Xinglonggang River had the satisfactory level, and the others were in ordinary level.

Key words: eddy covariance, carbon flux, subtropical bamboo forests, drought stress.