摘要
本文首先模拟计算松嫩草原土壤水量平衡，并结合未来气候情景估算松嫩草原土壤水分的变化。最后，在土壤水分研究的基础上，初步评估全球气候变化对松嫩草原生产力的影响。
In this paper, the impacts of climate change on soil water balance is estimated in the Songnen steppe, using the soil water balance model and GISS、GFDL、 GCMS、Outputs.. Results Show: the annual potential evapotranspiration will increase by 18% and 25% under GISS and GFDL climate scenarfor repctively. The annual real soil evapotranspiraation will increase. During dry season, real evaporanspiration will decrease. However, during raining season, especially in July, real evapotranspiration will decrease. However, during raining season, especially in July, real evapotranspiration will increase obviously under the GISS and GFDL scenarios. Every month, available soil water will decrease under CO2 doubling situation soil will become drier in the Songnen Steppe. Using a simple climate-yield moel, the impact of climate change on grassland productivity is estimated, under GISS scenario, productivity will decrease 3%; under GFDL scenario, productivity will decrease 4%.
出处
《草地学报》
CAS
CSCD
1998年第2期147-152,共6页
Acta Agrestia Sinica
基金
国家教委草原生态建设研究项目
国家教委科技司[1996]146号重点项目
关键词
气候变化
水量平衡
草原生产力
松嫩草原
Climate Change
Soil water balance
Grassland productivity
Songnen Steppe
