The flood and drought each year brought incalculable damage to farmers. 每年的水旱災害都會給農民帶來不可估量的損失。
This paper built the Waterlogging and drought disaster database of Hengyang based on the long time sequenced Waterlogging and drought material. 依據長時間序列水旱災害資料,現已建立衡陽水旱災害資料庫。