Changes in climate extremes and their impact on wheat yield in Tianshan Mountains region, northwest China

Cheng, Li; Wang, Ranghui; Ning, Husen; Qinghong, Luo

doi:10.1007/s12665-016-6030-6

Cited by 26 publications

(24 citation statements)

References 39 publications

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“…The majority of existing hydrological and climatological studies, including analyses of the impacts of extreme climatic events have been conducted using ground-based gauge data [7,61]. Therefore, evaluation of other types of precipitation products for extreme events would provide important insight for determining their efficacy and accuracy for unusual climatic conditions [62].…”

Section: Extreme Events Analysismentioning

confidence: 99%

Assessment of Three Long-Term Gridded Climate Products for Hydro-Climatic Simulations in Tropical River Basins

Tan

Gassman

Cracknell

2017

Water

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Gridded climate products (GCPs) provide a potential source for representing weather in remote, poor quality or short-term observation regions. The accuracy of three long-term GCPs (Asian Precipitation-Highly-Resolved Observational Data Integration towards Evaluation of Water Resources: APHRODITE, Precipitation Estimation from Remotely Sensed Information using Artificial Neural Network-Climate Data Record: PERSIANN-CDR and National Centers for Environmental Prediction Climate Forecast System Reanalysis: NCEP-CFSR) was analyzed for the Kelantan River Basin (KRB) and Johor River Basin (JRB) in Malaysia from 1983 to 2007. Then, these GCPs were used as inputs into calibrated Soil and Water Assessment Tool (SWAT) models, to assess their capability in simulating streamflow. The results show that the APHRODITE data performed the best in precipitation estimation, followed by the PERSIANN-CDR and NCEP-CFSR datasets. The NCEP-CFSR daily maximum temperature data exhibited a better correlation than the minimum temperature data. For streamflow simulations, the APHRODITE data resulted in strong results for both basins, while the NCEP-CFSR data showed unsatisfactory performance. In contrast, the PERSIANN-CDR data showed acceptable representation of observed streamflow in the KRB, but failed to track the JRB observed streamflow. The combination of the APHRODITE precipitation and NCEP-CFSR temperature data resulted in accurate streamflow simulations. The APHRODITE and PERSIANN-CDR data often underestimated the extreme precipitation and streamflow, while the NCEP-CFSR data produced dramatic overestimations. Therefore, a direct application of NCEP-CFSR data should be avoided in this region. We recommend the use of APHRODITE precipitation and NCEP-CFSR temperature data in modeling of Malaysian water resources.

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Section: Extreme Events Analysismentioning

confidence: 99%

Assessment of Three Long-Term Gridded Climate Products for Hydro-Climatic Simulations in Tropical River Basins

Tan

Gassman

Cracknell

2017

Water

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“…The MK test is a nonparametric statistical test (Mann, 1945;Kendall and Charles, 1975) that is useful for assessing the significance of trends in time series data (Waked et al, 2016;Fathian et al, 2016). The MK test is often used to detect a step change point in the long-term trend of a time series dataset (Moraes et al, 1998;Li et al, 2016;Zhao et al, 2015). It is suitable for non-normally distributed data and censored data which are not influenced by abnormal values (Yue and Pilon, 2004;Sharma et al, 2016;Yue and Wang, 2004;Gao and Shi, 2016;Zhao et al, 2015).…”

Section: Trends and Step Changementioning

confidence: 99%

OMI-measured increasing SO<sub>2</sub> emissions due to energy industry expansion and relocation in northwestern China

et al. 2017

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Abstract. The rapid growth of economy makes China the largest energy consumer and sulfur dioxide (SO 2 ) emitter in the world. In this study, we estimated the trends and step changes in the planetary boundary layer (PBL) vertical column density (VCD) of SO 2 from 2005 to 2015 over China measured by the Ozone Monitoring Instrument (OMI). We show that these trends and step change years coincide with the effective date and period of the national strategy for energy development and relocation in northwestern China and the regulations in the reduction of SO 2 emissions. Under the national regulations for the reduction of SO 2 emissions in eastern and southern China, SO 2 VCD in the Pearl River Delta (PRD) of southern China exhibited the largest decline during 2005-2015 at a rate of −7 % yr −1 , followed by the North China Plain (NCP) (−6.7 % yr −1 ), Sichuan Basin (−6.3 % yr −1 ), and Yangtze River Delta (YRD) (−6 % yr −1 ). The Mann-Kendall (MK) test reveals the step change points of declining SO 2 VCD in 2009 for the PRD and 2012-2013 for eastern China responding to the implementation of SO 2 control regulation in these regions. In contrast, the MK test and regression analysis also revealed increasing trends of SO 2 VCD in northwestern China, particularly for several "hot spots" featured by growing SO 2 VCD in those large-scale energy industry bases in northwestern China. The enhanced SO 2 VCD is potentially attributable to increasing SO 2 emissions due to the development of large-scale energy industry bases in energy-abundant northwestern China under the national strategy for the energy safety of China in the 21st century. We show that these largescale energy industry bases could overwhelm the trends and changes in provincial total SO 2 emissions in northwestern China and contribute increasingly to the national total SO 2 emissions in China. Given that northwestern China is more ecologically fragile and uniquely susceptible to atmospheric pollution than the rest of China, increasing SO 2 emissions in this part of China should not be overlooked and merit scientific research.

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“…High temperature stress is one of the most limiting factors in crop production worldwide as a result of global warming (Fu et al 2015a ; Zhang et al 2017 ). It has been suggested that, at least in the cases of wheat, maize, rice and barley, a negative correlation exists between worldwide crop yields and increased temperatures (Reilly and Fuglie 1998 ; Yu et al 2012 ; Karunaratne and Wheeler 2015 ; Li et al 2016 ). For these crops, recent climate warming has resulted in annual combined loss of about megatons (Mt) of products (Peng et al 2004 ; Challinor et al 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Heat stress induces spikelet sterility in rice at anthesis through inhibition of pollen tube elongation interfering with auxin homeostasis in pollinated pistils

Zhang

Chen

et al. 2018

Rice

118

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BackgroundPollen tube elongation in the pistil is a key step for pollination success in plants, and auxins play an important role in this process. However, the function of auxins in pollen tube elongation in the pistil of rice under heat stress has seldom been previously reported.ResultsTwo rice genotypes differing in heat tolerance were subjected to heat stress of 40 °C for 2 h after flowering. A sharp decrease in spikelet fertility was found in the Nipponbare (NPB) and its mutant High temperature susceptible (HTS) under heat stress, but the stress-induced spikelet sterility was reversed by 1-naphthaleneacetic acid (NAA), especially the HTS. Under heat stress, the pollen tubes of NPB were visible in ovule, while those of HTS were invisible. However, we found the pollen tubes in ovule when sprayed with NAA. During this process, a significant increase in indole-3-acetic acid (IAA) and reactive oxygen species (ROS) levels was found in the pistil of heat-stressed NPB, while in heat-stressed HTS they were obviously decreased. Additionally, the peroxidase (POD) activity in pistil of NPB was significantly decreased by heat stress, whereas there was no difference between the heat-stressed and non-heat-stressed pistils of HTS.ConclusionIt was concluded that the enhancement of heat tolerance in plants by NAA was achieved through the increase of the levels of auxins, which prevented the inhibition of pollen tube elongation in pistil, and the crosstalk between auxins and ROS, which might be involved in this process. In addition, POD might be a negative mediator in pollen tube elongation under heat stress due to its ability to scavenge ROS and degrade auxin.Electronic supplementary materialThe online version of this article (10.1186/s12284-018-0206-5) contains supplementary material, which is available to authorized users.

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Changes in climate extremes and their impact on wheat yield in Tianshan Mountains region, northwest China

Cited by 26 publications

References 39 publications

Assessment of Three Long-Term Gridded Climate Products for Hydro-Climatic Simulations in Tropical River Basins

Assessment of Three Long-Term Gridded Climate Products for Hydro-Climatic Simulations in Tropical River Basins

OMI-measured increasing SO<sub>2</sub> emissions due to energy industry expansion and relocation in northwestern China

Heat stress induces spikelet sterility in rice at anthesis through inhibition of pollen tube elongation interfering with auxin homeostasis in pollinated pistils

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Changes in climate extremes and their impact on wheat yield in Tianshan Mountains region, northwest China

Cited by 26 publications

References 39 publications

Assessment of Three Long-Term Gridded Climate Products for Hydro-Climatic Simulations in Tropical River Basins

Assessment of Three Long-Term Gridded Climate Products for Hydro-Climatic Simulations in Tropical River Basins

OMI-measured increasing SO&lt;sub&gt;2&lt;/sub&gt; emissions due to energy industry expansion and relocation in northwestern China

Heat stress induces spikelet sterility in rice at anthesis through inhibition of pollen tube elongation interfering with auxin homeostasis in pollinated pistils

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OMI-measured increasing SO<sub>2</sub> emissions due to energy industry expansion and relocation in northwestern China