【摘要】 利用GCM-SSiB全球大气环流谱模式,设计两组数值模拟试验(即控制试验(CE)和绿化面积扩大试验(GE))。研究了大陆绿化对我国区域气候变化的影响。模拟结果表明:沙区绿化后,年平均地表温度升高,海平面气压下降,纬向风速减弱、夏季风增强,冬季风减弱,夏季低空上升运动加强,冬季下沉运动减弱,降雨量显著增加,低层大气比湿、地表蒸发量、感热及潜热通量亦增加。绿化后气候趋向暖湿,极有利于生态环境建设和荒漠化的进一步治理。更多还原

【Abstract】 The GCM-SSiB global spectral model has been used to study the influence of afforestation in China land on regional climate. Two numerical experiments were set up. The results show that widen afforestation made annual mean surface air temperature higher, sea level pressure lower, low level zonal wind velocity weaker, the summer monsoon stronger, the winter monsoon weaker, updraft motion stronger in the summer and downdraft motion weaker in the winter, precipitation increased obviously, low level atmosphere specific humidity, surface evaporation flux, sensible heat flux and latent heat flux increased obviously. Regional climate will incline to be warm and humid after afforestation. Afforestation is in favor of ecology environment construction and controlling desertification.更多还原