@article{MA Zhuguo_31, author = {MA Zhuguo}, title = {Variation of Frost Days and Its Relationship to Regional Warming in Northern China}, publisher = {Acta Geographica Sinica}, year = {2003}, journal = {Acta Geographica Sinica}, volume = {58}, number = {7s}, eid = {31}, pages = {31-37}, keywords = {
frost day;climate change;regional warming;trend;China
}, doi = https://www.geog.com.cn/EN/10.11821/xb20037s004 }