Comparison of the effects of symmetric and asymmetric temperature elevation and CO2 enrichment on yield and evapotranspiration of winter wheat (Triticum aestivum L.).
Comparison of the effects of symmetric and asymmetric temperature elevation and CO2 enrichment on yield and evapotranspiration of winter wheat (Triticum aestivum L.).
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对称和非对称升温和CO2富集对冬小麦产量和蒸散量影响的比较
DOI：
10.1002/ece3.1081
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发表时间：
2014-05
影响因子：
2.6
通讯作者：
Liu, Mengyu
中科院分区：
文献类型：
--
作者：
Qiao, Yunzhou;Liu, Huiling;Kellomaki, Seppo;Peltola, Heli;Liu, Yueyan;Dong, Baodi;Shi, Changhai;Zhang, Huizhen;Zhang, Chao;Gong, Jinnan;Si, Fuyan;Li, Dongxiao;Zheng, Xin;Liu, Mengyu
在气候变化的条件下，白天和夜间的非对称增暖模式比对称增暖模式更有可能。同时，植物的生长反应和水分利用可能与基于对称变暖的估计不同。本研究比较了对称升温和非对称升温单独以及与CO2浓度（EC）交互作用对冬小麦（Triticum aestivum L.）产量（戈伊）和蒸散量的影响。在华北平原进行了盆栽试验。实验在六个平顶室中进行，具有以下气候处理：（1）环境温度和环境CO2（CON），（2）环境温度和升高的CO2（EC），（3）升高的温度和环境CO2（ECO 2; ETa），和（4）升高的温度和升高的CO2（ECECO 2，ECETa）。在对称变暖中，温度在夜间增加了3°C，在不对称变暖中，温度在夜间增加了3.5°C，在白天增加了2.5°C。结果，戈伊在ETA和15.6之间（P < 0.05）和10.3% ECET和ECETa处理组的戈伊为14.9（P < 0.05）和9.1%（P < 0.05）高于对照组，与戈伊组相反，蒸散量为7.8（P < 0.05）和17.9% ETa和ETB处理组的平均存活率显著高于对照组（P < 0.05），而ETa和ETB处理组的平均存活率分别为7.2（P < 0.05）和2.1%与对照组相比，ECET和ECETa治疗组（P > 0.05）较低。因此，随着CO2浓度和温度的升高，小麦的戈伊将随着气候的变化而增加，这是由于在CO2浓度升高的情况下，CO2浓度升高。然而，由于较高的蒸散量，ETa下的收益将低于基于CO2的估计。
Under the changing climate, asymmetric warming pattern would be more likely during day and night time, instead of symmetric one. Concurrently, the growth responses and water use of plants may be different compared with those estimated based on symmetric warming. In this work, it was compared with the effects of symmetric (ETs) and asymmetric (ETa) elevation of temperature alone, and in interaction with elevated carbon dioxide concentration (EC), on the grain yield (GY) and evapotranspiration in winter wheat (Triticum aestivum L.) based on pot experiment in the North China Plain (NCP). The experiment was carried out in six enclosed-top chambers with following climate treatments: (1) ambient temperature and ambient CO2 (CON), (2) ambient temperature and elevated CO2 (EC), (3) elevated temperature and ambient CO2 (ETs; ETa), and (4) elevated temperature and elevated CO2 (ECETs, ECETa). In symmetric warming, temperature was increased by 3°C and in asymmetric one by 3.5°C during night and 2.5°C during daytime, respectively. As a result, GY was in ETa and ETs 15.6 (P < 0.05) and 10.3% (P < 0.05) lower than that in CON. In ECETs and ECETa treatments, GY was 14.9 (P < 0.05) and 9.1% (P < 0.05) higher than that in CON. Opposite to GY, evapotranspiration was 7.8 (P < 0.05) and 17.9% (P < 0.05) higher in ETa and ETs treatments and 7.2 (P < 0.05) and 2.1% (P > 0.05) lower in ECETs and ECETa treatments compared with CON. Thus, GY of wheat could be expected to increase under the changing climate with concurrent elevation of CO2 and temperature as a result of increased WUE under the elevated CO2. However, the gain would be lower under ETa than that estimated based on ETs due to higher evapotranspiration.
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影响因子：
7.3
作者：
Garcia, RL;Long, SP;Wechsung, F
通讯作者：
Wechsung, F
影响因子：
6.6
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Asseng, Senthold
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Ortiz, Rodomiro;Sayre, Kenneth D.;Reynolds, Matthew
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Dhakhwa, GB;Campbell, CL
通讯作者：
Campbell, CL