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| 1 | Comparative study of the net exchange of CO_(2) in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau显示文摘Using the eddy covariance method,from 1 July2003 to 30 June 2004, we conducted the observation andanalysis of ecosystem CO2 flux in 3 types of alpine meadowvegetation (Kobresia humilis, Potentilla fruticosa shrub andKobresia tibetica swamp meadows) on the Qinghai-TibetanPlateau. The results show that the Kobresia humilis meadow,the shrub meadow and the swamp meadow’s highest CO2uptake rates are 16.78, 10.42 and 16.57 μmol·m?2·s?1respectively, while their highest CO2 release rates are 8.22,7.73 and 18.67 μmol·m?2·s?1 respectively. The Kobresiahumilis meadow and shrub meadow’s annual atmosphericuptakes are 282 g CO2/m2 and 53 g CO2/m2, respectively,while swamp meadow’s annual atmospheric release is 478 gCO2/m2. This proves that the Kobresia humilis meadow andthe shrub meadow on the Qinghai-Tibetan Plateau haverelatively low potential for CO2 uptake and release comparedto C4 grasslands, a number of lowland grasslands, andforests. Moreover, swamp meadow has relatively high releasepotential. This, in turn, reveals clear differences in carbonsource/sink between different types of vegetation in theQinghai-Tibetan Plateau alpine meadow ecosystem. Thesedifferences are mainly brought by differences in thevegetations’ photosynthetic capacity and soil respiration. | ZHAO Liang LI Yingnian ZHAO Xinquan XU Shixiao TANG Yanhong YU Guirui GU Song DU Mingyuan WANG Qinxue | 2005 | Chinese Science Bulletin2005，50，16： | 34 |
| 2 | Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition显示文摘 | Huajun Fang Shulan Cheng Guirui Yu Jiaojiao Zheng Peilei Zhang Minjie Xu Yingnian Li Xueming Yang | 2012 | Plant and Soil (-)2012，，1： | 1 |
| 3 | Short-term effect of increasing nitrogen deposition on CO 2 , CH 4 and N 2 O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China显示文摘 | Chunming Jiang Guirui Yu Huajun Fang Guangmin Cao Yingnian Li | 2010 | Atmospheric Environment2010，，24： | 1 |
| 4 | Application of micronucleus and micronucleus test in geno-toxicology显示文摘 | Wang Shuang Zhu C ejian Yu Yingnian | 2000 | Carcinogenesis Teratogenesis and Mulagenesis2000，12，4： | 1 |
| 5 | Lagged climatic effects on carbon fluxes over three grassland ecosystems in China显示文摘Aims The plasticity of ecosystem responses could buffer and post-pone the effects of climates on ecosystem carbon fluxes,but this lagged effect is often ignored.In this study,we used carbon flux data collected from three typical grassland ecosystems in China,including a temperate semiarid steppe in Inner mongolia(Neimeng site,Nm),an alpine shrub-meadow in Qinghai(Haibei site,Hb)and an alpine meadow steppe in Tibet(Dangxiong site,DX),to examine the time lagged effects of environmental factors on CO_(2) exchange.Methods Eddy covariance data were collected from three typical Chinese grasslands.In linking carbon fluxes with climatic factors,we used their averages or cumulative values within each 12-month period and we called them‘yearly’statistics in this study.To investigate the lagged effects of the climatic factors on the car-bon fluxes,the climatic‘yearly’statistics were kept still and the‘yearly’statistics of the carbon fluxes were shifted backward 1 month at a time.Important Findingssoil moisture and precipitation was the main factor driving the annual variations of carbon fluxes at the alpine Hb and DX,respectively,while the Nm site was under a synthetic impact of each climatic factor.The time lagged effect analysis showed that temperature had several months,even half a year lag effects on Co2 exchange at the three studied sites,while moisture’s effects were mostly exhibited as an immediate manner,except at Nm.In general,the lagged climatic effects were relatively weak for the alpine ecosystem.our results implied that it might be months or even 1 year before the variations of ecosystem carbon fluxes are adjusted to the current climate,so such lag effects could be resistant to more frequent climate extremes and should be a critical component to be considered in evaluating ecosystem stability.an improved knowledge on the lag effects could advance our understanding on the driving mechanisms of climate change effects on ecosystem carbon fluxes. | Tao Zhang Mingjie Xu Yi Xi Juntao Zhu Li Tian Xianzhou Zhang Yanfen Wang Yingnian Li Peili Shi Guirui Yu Xiaomin Sun Yangjian Zhang | 2015 | Journal of Plant Ecology2015，8，3： | 1 |
| 6 | Molecular events after antisens e inhibiti on of hMSH2 in a Hela cell line显示文摘 | Yin Qian Yingnian Yu Xinruo Chen | 1998 | Mutation Research1998，418，23： | 1 |
| 7 | Isolating the cDNA fragment inhibiting nontargeted mutagenesis in vero cell by antisense technology显示文摘Among the expressed sequence tags (ESTs) which were isolated from genetically instable monkey kidney vero cells induced by N-methyI-N’-nitro-N-nitrosoguanidine (MNNG), a fragment 9 was isolated. When the expression of fragment 9 was blocked through transcripting antisense RNA, MNNGinduced nontargeted mutation frequency enhanced significantly compared with control ( P < 0.05). The result showed that the relevant gene of fragment 9 might participate in maintaining cellular genetic stability and be involved in inhibition of nontargeted mutagenesis. | Wenwei Hu Yingnian Yu Xingruo Chen Tao Song Haiyang Xie | 1999 | Chinese Science Bulletin1999，44，6： | 0 |
| 8 | Relations between Carbon Dioxide Fluxes and Environmental Factors of Kobresia humilis Meadows and Potentilla fruticosa Meadows显示文摘Carbon dioxide fluxes of Kobresia humilis and Potentilla fruticosa shrub meadows,two typical ecosystems in the Qinghai-Tibet Plateau,were measured by eddy covari-ance technology and the data collected in August 2003 were employed to analyze the relations between carbon dioxide fluxes and environmental factors of the ecosystems.August is the time when the two ecosystems reach their peak leaf area indexes and stay stable,and also the period when the net carbon absorptions of Kobresia humilis and Potentilla fruticosa shrub meadows reach 56.2 g C·m^(-2)and 32.6 g C·m^(-2),with their highest daily carbon dioxide absorp-tions standing at 12.7μmol·m^(-2)·s^(-1)and 9.3μmol·m^(-2)·s^(-1),and their highest carbon discharges at 5.1μmol·m^(-2)·s^(-1)and 5.7μmol·m^(-2)·s^(-1),respectively.At the same photosynthetic photo flux densities(PPFD),the carbon dioxide-uptake rate of the Kobresia humilis meadow is higher than that of the Potentilla fruticosa shrub meadow;where the PPFD are higher than 1,200μmol·m^(-2)·s^(-1).The carbon dioxide uptake rates of the two ecosystems declined as air temperature increased,but the carbon dioxide uptake rate of the Kobresia humilis meadow decreased more quickly(-0.086)than that of the Potentilla fruticosa shrub meadow(-0.016).Soil moistures exert influence on the soil respirations and this varies with the vegetation type.The daily carbon dioxide absorptions of the ecosystems increase with increased diurnal temperature differences and higher diurnal temperature differences result in higher carbon dioxide exchanges.There exists a negative correlation between the vegetation albedos and the carbon dioxide fluxes. | ZHAO Liang XU Shixiao LI Yingnian TANG Yanhong ZHAO Xinquan GU Song DU Mingyuan YU Guirui | 2007 | Frontiers in Biology2007，2，3： | 0 |
| 9 | The transcription factors and the relevant signaling pathways activated by low concentration MNNG显示文摘 | Guliang Wand Yingnian Yu | 2001 | 癌变.畸变.突变2001，13，4： | 0 |
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