Drought characteristics of Henan province in 1961-2013 based on Standardized Precipitation Evapotranspiration Index

Benlin SHI, Xinyu *ZHU, Yunchuan HU, Yanyan YANG

Journal of Geographical Sciences . 2017, (3): 311 -325 . DOI: 10.1007/s11442-017-1378-4