过去1500年关中西部农业对环境变化的响应:旱涝灾害

Agriculture Response to Environmental Change in West Guanzhong Plain During the Past 1500 Years

根据关中西部旱涝史料 ,统计出 7世纪到 2 0世纪的 1 50 0年间每个世纪发生的旱涝的年数 ,然后运用频数分析法及灾情等级指数 ,对关中西部地区农业旱灾的历史变化进行分析。发现该区域的农业旱灾频数与中国东部气候变化有很好的对应关系 :旱灾在冷期多发 ,灾情在气候突变时加重。

Revealing the response of human being to environmental change has become a new hotspot in global change studies lately. It is also an important research field for Chinese researchers. The temperature change sequence in east China during past 2000 years reconstructed by GE-quansheng ,etc.has take into account recently. On the basis of drought / flood historical records in Guanzhong plain during 1500 years,the number of drought/flood disasters had statistied. The history change of agricultural drought in Guanzhong plain had been analysed by the use of the frequency analytical method and disaster condition index analytical method. a good parallelism relationship between the regional agriculture drought frequency and China east climatic change was found:the more cold in the air, the more frequency of drought, and sharpen condition of disaster in climate heterogenesis period .