Modeling the interactive effects of atmospheric CO2 and N on rice growth and yield
Modeling the interactive effects of atmospheric CO2 and N on rice growth and yield
复制标题
DOI：
10.1016/j.fcr.2004.10.003
复制
发表时间：
2005-09-14
影响因子：
5.8
通讯作者：
Miura, S
中科院分区：
文献类型：
--
作者：
Bannayan, M;Kobayashi, K;Miura, S
已经有几个模拟研究增加CO2浓度（[CO2]）对作物生产力的影响，但如果研究中使用的模型能够模拟增加[CO2]的影响以及与其他变量（如氮和水供应）的相互作用，则这些研究的可信度将大大提高。由于水稻是世界上主要的粮食作物之一，因此非常需要评估气候变化对这一作物的影响。在这项研究中，我们测试了Oryza2000模型对水稻植株的生长和产量在3年的田间试验，水稻植株受到升高[CO2]与自由空气二氧化碳富集（FACE）在不同的氮（N）施肥率在日本北方农民的稻田。模拟结果表明，该模型大大高估了峰值绿色叶面积指数的增加，由于升高[CO2]，但它模拟的总植物生物量的增加，只有一个轻微的高估。该模型是成功的，在模拟增加水稻产量由于CO2富集，但它未能再现所观察到的相互作用与N在水稻产量响应[CO2]升高。(c)2004 Elsevier B.V.保留所有权利。
There have been several simulation studies of the effects of increasing CO2 concentration ([CO2]) on crop productivity, but confidence in these would be substantially enhanced if the models used in the studies are shown to mimic the effects of increasing [CO2] and interactions with other variables such as nitrogen and water supplies. Since rice is one of the major staple crops in the world, it is highly desirable to evaluate the climate change impacts on this crop. In this study, we tested Oryza2000 model against the observed growth and yield of rice plants in a 3-year field experiment, where rice plants were subjected to elevated [CO2] with free air carbon dioxide enrichment (FACE) under varying nitrogen (N) fertilization rates in farmers' rice paddies in northern Japan. The simulation results showed that the model greatly overestimates the increase in peak green leaf area index due to elevated [CO2], but that it simulates the enhancement of total plant biomass with only a minor overestimation. The model was successful in simulating the increase in rice yield due to the CO2 enrichment, but it failed to reproduce the observed interaction with N in the rice yield response to elevated [CO2]. (c) 2004 Elsevier B.V. All rights reserved.