Acta Agrestia Sinica

›› 1998, Vol. 6 ›› Issue (2): 147-152.DOI: 10.11733/j.issn.1007-0435.1998.02.010

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Impacts of Climate Change on Soil Water Balance and Grassland Productivity in the Songnen Steppe

Deng Huiping1, Zhu Tingcheng2   

  1. 1. Depatment of Geography, Shandong Normal University, Jinan 25001;
    2. Institute of Grassland, Northeast Normal University, Changchun 130024
  • Online:1998-05-15 Published:1998-05-15

全球气候变化对松嫩草原土壤水分和生产力影响的研究

邓慧平1, 祝廷成2   

  1. 1. 山东师范大学人口、资源与坏境学院, 济南, 250014;
    2. 东北师范大学草地研究所, 长春, 130024
  • 基金资助:
    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

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Abstract: 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%.

Key words: Climate Change, Soil water balance, Grassland productivity, Songnen Steppe

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。

关键词: 气候变化, 水量平衡, 草原生产力, 松嫩草原