@article{Li Liu:194, author = {Li Liu, Qi Feng}, title = {Advances in research of function and valuation of ecosystem services}, publisher = {Sciences in Cold and Arid Regions}, year = {2015}, journal = {Sciences in Cold and Arid Regions}, volume = {7}, number = {2}, eid = {194}, numpages = {4}, pages = {194}, keywords = {ecosystem;function;value}, url = {http://www.scar.ac.cn/EN/abstract/article_245.shtml}, doi = {10.3724/SP.J.1226.2015.00194} }