北方农牧交错带降水极值变化空间特征
章文波, 刘宝元
Spatial distribution of precipitation extremum in the ecotone between agriculture and animal husbandry in northern China
ZHANG Wen-bo, LIU Bao-yuan
自然资源学报 . 2003, (3): 274 -280 .  DOI: 10.11849/zrzyxb.2003.03.003