Climate and Environment Changes Inferred from Pollen Records since 4000 a BP in the Headwaters of the Ürüqi River, Tianshan
JU Yuan-jiang, LIU Geng-nian
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2004, (2): 166 -170 .  DOI: 10.7522/j.issn.1000-0240.2004.0026