1961~2010年中国农业洪旱灾害时空特征、成因及影响
顾西辉, 张强, 张生

Spatio-temporal Properties of Flood/Drought Hazards and Possible Causes and Impacts in 1961-2010
Xihui Gu, Qiang Zhang, Sheng Zhang
图5 影响农业灾害的人类活动统计特征
Fig.5 Changes in human activities of affecting agricultural disasters