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生态学杂志 ›› 2010, Vol. 29 ›› Issue (07): 1469-1476.

• 方法与技术 • 上一篇    

气候变化对藏北地区草地生产力的影响模拟

杨 凯1,2,林而达2**,高清竹2,万运帆2,江村旺扎3,王宝山3,李文福3   

  1. 1福建省气象科学研究所,福州 350001;2中国农业科学院农业环境与可持续发展研究所/农业部农业环境与气候变化重点实验室,北京 100081;3西藏自治区那曲地区农牧局,西藏那曲 852100
  • 出版日期:2010-07-08 发布日期:2010-07-08

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

摘要: 利用政府间气候变化委员会(IPCC)排放情景特别报告(SRES)的A2和B2方案,通过区域气候模式系统PRECIS与草地生态模型SPUR相联接,模拟评估未来2071—2100年藏北地区草地生产力的变化。结果表明:2种温室气体排放情景下,温度升高、太阳总辐射降低和降水量增加的区域,各类型草地地上生物量基本呈增加的趋势;降水量减少的区域,高嵩草型草地地上生物量呈减少的趋势;藏北地区的草地生产力不大可能从CO2富集上得到多大好处。

关键词: 长期肥料试验, 作物产量, 水肥交互作用

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