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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Past and general circulation model-driven future trends of climate change in Central Indian Punjab: ensuing yield of rice-wheat cropping system.
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Past and general circulation model-driven future trends of climate change in Central Indian Punjab: ensuing yield of rice-wheat cropping system.

机译:中部印度旁遮普邦过去和一般的循环模式驱动的气候变化的未来趋势:随之而来的稻麦种植系统的产量。

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摘要

Climate data recorded for the last 40 years (1971-2010) at meteorological station of Punjab Agricultural University, Ludhiana (Central Indian Punjab) and future changes in climate data derived from three General Circulation Models (GCMs), viz. HadCM3, CSIRO-Mk2 and CCCMA-CGCM2, were analysed. Past data showed increase in temperature, decrease in open pan evaporation and irregular trends in rainfall. Amongst GCMs, the HadCM3 model showed relatively more increase in minimum than maximum temperature. Averaged across GCMs and scenarios, CropSyst model-simulated crop yields of rice-wheat system showed 7%, 15% and 25% decrease in rice and 10%, 20% and 34% in wheat for the years 2020, 2050 and 2080 respectively.
机译:在卢迪亚纳的旁遮普邦农业大学气象站(中部印度旁遮普邦)记录了过去40年(1971-2010年)的气候数据,以及从三个通用环流模型(GCM)得出的未来气候数据变化。分析了HadCM3,CSIRO-Mk2和CCCMA-CGCM2。过去的数据显示温度升高,平底锅蒸发减少,降雨趋势不规则。在GCM中,HadCM3模型的最低温度升高幅度大于最高温度。在2020年,2050年和2080年,CropSyst模型对水稻-小麦系统的作物产量进行平均计算,结果显示水稻,小麦和小麦的产量分别下降了7%,15%和25%,小麦分别下降了10%,20%和34%。

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