Evidence and modeling study of droughts in China during 4―2 ka BP  

作　　者：WANG ShaoWu HUANG JianBin WEN XinYu ZHU JinHong 

机构地区：[1]Department of Atmospheric Sciences, School of Physics, Peking University, Beijing 100871, China

出　　处：《Chinese Science Bulletin》2008年第14期2215-2221,共7页

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No. 40331010)

摘　　要：Four periods with predominated droughts are identified in 4―2 ka BP according to documentary data, namely 3.6―3.5, 3.1―3.0, 2.8―2.7, and 2.45―2.35 ka BP. Palaeo-environmental data indicated that droughts were predominated in 4―2 ka BP in the south of Northeast China, Inner-Mongolia, east of Qinghai-Tibetan Plateau, and South China. Modeling study shows that precession may be responsible for the occurrence of droughts in 4―2 ka BP, integrating the GCM with forcing of insolation.Four periods with predominated droughts are identified in 4-2 ka BP according to documentary data, namely 3.6-3.5, 3.1-3.0, 2.8-2.7, and 2.45-2.35 ka BP. Palaeo-environmental data indicated that droughts were predominated in 4-2 ka BP in the south of Northeast China, Inner-Mongolia, east of Qinghai-Tibetan Plateau, and South China. Modeling study shows that precession may be responsible for the occurrence of droughts in 4-2 ka BP, integrating the GCM with forcing of insolation.

关 键 词：中国 干旱地区 模式研究 环境监测 

分 类 号：X3[环境科学与工程—环境工程]