The current study investigates a group of Chinese undergraduates’perceptions of Chinese culture.It examines the discourses that the students drew on to assign meaning to Chinese culture and how the students used thes...The current study investigates a group of Chinese undergraduates’perceptions of Chinese culture.It examines the discourses that the students drew on to assign meaning to Chinese culture and how the students used these discourses in constructing their Chinese cultural identity.A qualitative study was conducted collecting written self-reflective reports on critical intercultural incidents from 39 Chinese undergraduates at a university in Beijing.Questions designed to evoke reports from the students had them describe incidents in their past intercultural experiences that made them acutely aware of themselves“being Chinese”and specify aspects of Chinese culture that they felt such awareness could be attributed to.A discourse analysis reveals the multiplicity and contextuality of the students’notions of Chinese culture.The findings raise important considerations for contemporary Chinese undergraduates’cultural identity and their much debated“identity crisis.”展开更多
The maximum rate of carboxylation （Vcax） is a key photosynthetic parameter for gross primary produc- tion （GPP） estimation in terrestrial biosphere models. A set of observation-based Vcax values, which take the ni...The maximum rate of carboxylation （Vcax） is a key photosynthetic parameter for gross primary produc- tion （GPP） estimation in terrestrial biosphere models. A set of observation-based Vcax values, which take the ni- trogen limitation on photosynthetic rates into consideration, are used in version 4.5 of the Community Land Model （CLM4.5）. However, CLM4.5 with carbon-nitrogen （CN） biogeochemistry （CLM4.5-CN） still uses an inde- pendent decay coefficient for nitrogen after the photosyn- thesis calculation. This means that the nitrogen limitation on the carbon cycle is accounted for twice when CN bio- geochemistry is active. Therefore, to avoid this double nitrogen down-regulation in CLM4.5-CN, the original Vcmax scheme is revised with a new one that only accounts for the transition between Vcmax and its potential value （without nitrogen limitation）. Compared to flux tower- based observations, the new Vcmax scheme reduces the root-mean-square error （RMSE） in GPP for China's Mainland by 13.7 g C m-2 yr-1, with a larger decrease over humid areas （39.2 g C m 2 yr-1）. Moreover, net primary production and leaf area index are also improved, with reductions in RMSE by 0.8% and 11.5%, respectively.展开更多
基金This research was supported by the Fundamental Research Funds for the Central Universities of China under Grant No.3162020ZYKC05Beijing Social Science Funds under Grant No.19YYC017.
文摘The current study investigates a group of Chinese undergraduates’perceptions of Chinese culture.It examines the discourses that the students drew on to assign meaning to Chinese culture and how the students used these discourses in constructing their Chinese cultural identity.A qualitative study was conducted collecting written self-reflective reports on critical intercultural incidents from 39 Chinese undergraduates at a university in Beijing.Questions designed to evoke reports from the students had them describe incidents in their past intercultural experiences that made them acutely aware of themselves“being Chinese”and specify aspects of Chinese culture that they felt such awareness could be attributed to.A discourse analysis reveals the multiplicity and contextuality of the students’notions of Chinese culture.The findings raise important considerations for contemporary Chinese undergraduates’cultural identity and their much debated“identity crisis.”
基金supported by the National Natural Science Foundation of China(Grant Nos.91125016 and 41305066)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA05110102)
文摘The maximum rate of carboxylation （Vcax） is a key photosynthetic parameter for gross primary produc- tion （GPP） estimation in terrestrial biosphere models. A set of observation-based Vcax values, which take the ni- trogen limitation on photosynthetic rates into consideration, are used in version 4.5 of the Community Land Model （CLM4.5）. However, CLM4.5 with carbon-nitrogen （CN） biogeochemistry （CLM4.5-CN） still uses an inde- pendent decay coefficient for nitrogen after the photosyn- thesis calculation. This means that the nitrogen limitation on the carbon cycle is accounted for twice when CN bio- geochemistry is active. Therefore, to avoid this double nitrogen down-regulation in CLM4.5-CN, the original Vcmax scheme is revised with a new one that only accounts for the transition between Vcmax and its potential value （without nitrogen limitation）. Compared to flux tower- based observations, the new Vcmax scheme reduces the root-mean-square error （RMSE） in GPP for China's Mainland by 13.7 g C m-2 yr-1, with a larger decrease over humid areas （39.2 g C m 2 yr-1）. Moreover, net primary production and leaf area index are also improved, with reductions in RMSE by 0.8% and 11.5%, respectively.
