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Author Schönhart, M.
Title (up) Contributions from bio-eocnomic farm models to the analysis of climate change adaptation: lessons from MACSUR regional pilot studies Type
Year 2015 Publication FACCE MACSUR Reports Abbreviated Journal
Volume 4 Issue Pages SP4-16
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Area Expedition Conference TradeM International Workshop 2014 »Economics of integrated assessment approaches for agriculture and the food sector«, 25–27 November 2014, Hurdalsjø, Norway
Notes Approved no
Call Number MA @ admin @ Serial 2206
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Author Zhai, R.; Tao, F.
Title (up) Contributions of climate change and human activities to runoff change in seven typical catchments across China Type Journal Article
Year 2017 Publication Science of the Total Environment Abbreviated Journal Sci. Tot. Environ.
Volume 605 Issue Pages 219-229
Keywords Catchments; Detection; Attribution; Runoff; VIC; Water resource; Weihe River-Basin; Hydrologic Response; Temporal-Changes; Loess Plateau; United-States; Yellow-River; Streamflow; Impacts; Variability; Model
Abstract Climate change and human activities are two major factors affecting water resource change. It is important to understand the roles of the major factors in affecting runoff change in different basins for watershed management. Here, we investigated the trends in climate and runoff in seven typical catchments in seven basins across China from 1961 to 2014. Then we attributed the runoff change to climate change and human activities in each catchment and in three time periods (1980s, 1990s and 2000s), using the VIC model and long-term runoff observation data. During 1961-2014, temperature increased significantly, while the trends in precipitation were insignificant in most of the catchments and inconsistent among the catchments. The runoff in most of the catchments showed a decreasing trend except the Yingluoxia catchment in the northwestern China. The contributions of climate change and human activities to runoff change varied in different catchments and time periods. In the 1980s, climate change contributed more to runoff change than human activities, which was 84%, 59%,-66%,-50%, 59%, 94%, and -59% in the Nianzishan, Yingluoxia, Xiahui, Yangjiaping, Sanjiangkou, Xixian, and Changle catchment, respectively. After that, human activities had played a more essential role in runoff change. In the 1990s and 2000s, human activities contributed more to runoff change than in the 1980s. The contribution by human activities accounted for 84%,- 68%, and 67% in the Yingluoxia, Xiahui, and Sanjiangkou catchment, respectively, in the 1990s; and -96%,-67%,-94%, and -142% in the Nianzishan, Yangjiaping, Xixian, and Changle catchment, respectively, in the 2000s. It is also noted that after 2000 human activities caused decrease in runoff in all catchments except the Yingluoxia. Our findings highlight that the effects of human activities, such as increase in water withdrawal, land use/cover change, operation of dams and reservoirs, should be well managed. (C) 2017 Elsevier B.V. All rights reserved.
Address 2017-09-14
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ISSN 0048-9697 ISBN Medium Article
Area Expedition Conference
Notes CropM, ft_macsur Approved no
Call Number MA @ admin @ Serial 5177
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Author Yin, X.; Olesen, J.E.; Li, W.; Wang, M.; Zhang, H.
Title (up) Contributions of climatic, technological and social factors to maize yield in the northeast farming region of China during 1985 to 2009 Type Manuscript
Year 2015 Publication Abbreviated Journal
Volume Issue Pages
Keywords CropM
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Area Expedition Conference
Notes Approved no
Call Number MA @ admin @ Serial 2912
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Author Xiao, D.P.; Tao, F.L.
Title (up) Contributions of cultivar shift, management practice and climate change to maize yield in North China Plain in 1981-2009 Type Journal Article
Year 2016 Publication International Journal of Biometeorology Abbreviated Journal International Journal of Biometeorology
Volume 60 Issue 7 Pages 1111-1122
Keywords Adaptation; Agronomic practice; Maize yield; Negative impact; Climate; change; model; variability; performance; simulation; province; apsim; gaps
Abstract The impact of climate change on crop yield is compounded by cultivar shifts and agronomic management practices. To determine the relative contributions of climate change, cultivar shift, and management practice to changes in maize (Zea mays L.) yield in the past three decades, detailed field data for 1981-2009 from four representative experimental stations in North China Plain (NCP) were analyzed via model simulation. The four representative experimental stations are geographically and climatologically different, represent the typical cropping system in the study area, and have more complete weather/crop records for the period of 1981-2009. The results showed that while the shift from traditional to modern cultivar increased yield by 23.9-40.3 %, new fertilizer management increased yield by 3.3-8.6 %. However, the trends in climate variables for 1981-2009 reduced maize yield by 15-30 % in the study area. Among the main climate variables, solar radiation had the largest effect on maize yield, followed by temperature and then precipitation. While a significant decline in solar radiation in 1981-2009 (maybe due to air pollution) reduced yield by 12-24 %, a significant increase in temperature reduced yield by 3-9 %. In contrast, a non-significant increase in precipitation during the maize growth period increased yield by 0.9-3 % at three of the four investigated stations. However, a decline in precipitation reduced yield by 3 % in the remaining station. The study revealed that although the shift from traditional to modern cultivars and agronomic management practices contributed most to the increase in maize yield, the negative impact of climate change was large enough to offset 46-67 % of the trend in the observed yields in the past three decades in NCP. The reduction in solar radiation, especially in the most critical period of maize growth, limited the process of photosynthesis and thereby further reduced maize yield.
Address 2016-09-13
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Language English Summary Language Original Title
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ISSN 0020-7128 ISBN Medium Article
Area Expedition Conference
Notes CropM, ft_macsur Approved no
Call Number MA @ admin @ Serial 4779
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Author Van Oijen, M.; Cameron, D.; Levy, P.E.; Preston, R.
Title (up) Correcting errors from spatial upscaling of nonlinear greenhouse gas flux models Type Journal Article
Year 2017 Publication Environmental Modelling & Software Abbreviated Journal Environmental Modelling & Software
Volume 94 Issue Pages 157-165
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ISSN 1364-8152 ISBN Medium article
Area Expedition Conference
Notes CropM, ft_macsur Approved no
Call Number MA @ admin @ Serial 4945
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