1. Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation. (18th January 2017) Authors: Tong, Siqin; Bao, Yuhai; Te, Rigele; Ma, Qiyun; Ha, Si; Lusi, A. Other Names: Bagan Hasi Academic Editor. Journal: Mathematical problems in engineering Issue: Volume 2017(2017) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗