中国西部绿化对东亚季风气候影响的数值模拟

中国西部大开发战略中的生态环境建设将在西部地区引起显著的地表覆盖变化。根据最新的全球地表特征数据库资料和21世纪初中国西部生态环境三大重点建设工程的具体规划，得出两种植被，即现实植被和虚拟植被。并利用RIEMS—TEA模式，通过一次敏感性试验，发现西部地区绿化明显影响东亚的季风系统和中国东部季风区气候。模拟试验显示，中国西部绿化会明显增强东亚夏季风，这将会加强中国东部由南向北的水汽输送，并有利于输送邻近海洋的水汽到大陆，使得中国大陆东部季风区整体出现降温、增湿和降水增加。而且，温度、湿度、气压和风速受影响的程度在垂直方向上都已超出了边界层之外。

Influence of West China Afforestation on Monsoon Climate in East Asia

The West Development implemented in China causes significant Land Use and Land Cover (LULC) changes in West China. With the up-to-date satellite database of the Global Land Cover Characteristics Database (GLCCD) that characterizes the significant LULC variation induced by the West Development and the corresponding ecological engineering in China, a regional climate model is used to simulate its impacts on regulating the summer monsoon system in East Asia and the relevant regional climate changes. The simulation shows that the East Asian summer monsoon might be enhanced because of the large scale LULC variation in West China, which enhances the water vapor transfer from the South to the North in East China and helps the water vapor transfer from the adjacent oceanic areas to the continent of China. As a result, there are temperature decrease, the increase of humidity and precipitation in the monsoon region of East China on the whole. The integral impact of LULC variation is much higher than the atmospheric boundary layer.