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cje ›› 2010, Vol. 29 ›› Issue (07): 1469-1476.

• Articles • Previous Articles    

Simulation of climate change impacts on grassland productivity in Northern Tibet.
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YANG Kai1,2, LIN Er-da2, GAO Qing-zhu2, WAN Yun-fan2, JIANGCUN Wang-zha3, WANG Bao-shan3, LI Wen-fu3
  

  1. 1Institute of Meteorological Science of Fujian Province, Fuzhou 350001, China|2Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences/Key Laboratory of Agricultural Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China;3Naqu Bureau of Agriculture and Husbandry Management Department, Tibet Autonomous Region, Naqu 852100, Tibet, China
  • Online:2010-07-08 Published:2010-07-08

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Abstract: Based on the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emission Scenarios (SRES) A2 and B2, and by using the Regional Climate Model (PRECIS) and grassland SPUR model, the changes of grassland productivity in Northern Tibet in 2071-2100 were simulated. It was predicted that under  scenarios A2 and B2, the aboveground biomass of all kind grasslands in the regions, where temperature raised, total solar radiation decreased, and precipitation increased, would be increased, while that of Kobrezsia pygmaea grassland in the regions, where precipitation decreased, would be decreased. Our results suggested that the grassland productivity in Northern Tibet might not benefit from CO2 fertilization.

Key words: Long term fertilization trial, Crop yield, Water nutrient interaction