@article{_236, author = {[null, null, null, null]}, title = {}, publisher = {地理学报(英文版)}, year = {2015}, journal = {Journal of Geographical Sciences}, volume = {25}, number = {2}, eid = {236}, pages = {236-256}, keywords = {}, doi = https://www.geogsci.com/CN/10.1007/s11442-015-1165-z }