funded by the Major Program of National Natural Science Foundation of China (40930101);National Technology Introduction Program of China (948 Program,2009-Z31);the Key Project of the Commonweal Foundation of China's National Academy (2010-02)~~
Since the introduction of the concept, studies on valuation of ecosystem services have been overwhelming, in cognizance of its great significance. In this article, the authors took Northeast China as the study area an...