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| 1 | Atmospheric nitrous oxide observations above the oceanic surface during CHINARE-18显示文摘The gas samples in the marine boundary layer were collected from the track for research ship Xuelong during the 18th Chinese Antarctic Research Expedition (CHINARE-18) and nitrous oxide measurements were made by HP5890ECD-GC in the laboratory. The results represent the shipboard N2O data set obtained within the lower troposphere with the average concentration of (313.5±2.6)nL*L-1 from 31°N to 69°S. The results showed a latitudinally weighted, mean interhemispheric difference of 0.61 nL*L-1. The latitudinal distribution of atmospheric N2O concentration was analyzed from northern midlatitudes to Southern Ocean around the Antarctic continent and it was showed that N2O concentration in the current confluences was higher than that in other oceanic areas. This indicated that strong N2O emissions occurred there. The longitudinal distribution of N2O concentrations in the Southern Ocean also showed similar situation. According to the interhemispheric difference of atmospheric N2O concentrations and the two-box model, we estimated that 2/5 of the global flux of N2O into the atmosphere is derived from the sources in the southern hemisphere. | ZHU Renbin, SUN Liguang and LIU Xiaodong(Institute of Polar Environment, University of Science and Technology of China, Hefei 230026, China) | 2003 | Progress in Natural Science:Materials International2003，13，8： | 9 |
| 2 | Nuclear phylotranscriptomics and phylogenomics support numerous polyploidization events and hypotheses for the evolution of rhizobial nitrogenfixing symbiosis in Fabaceae显示文摘Fabaceae are the third largest angiosperm family,with 765 genera and~19500 species.They are important both economically and ecologically,and global Fabaceae crops are intensively studied in part for their nitrogen-fixing ability.However,resolution of the intrasubfamilial Fabaceae phylogeny and divergence times has remained elusive,precluding a reconstruction of the evolutionary history of symbiotic nitrogen fixation in Fabaceae.Here,we report a highly resolved phylogeny using>1500 nuclear genes from newly sequenced transcriptomes and genomes of 391 species,along with other datasets,for a total of 463 legumes spanning all 6 subfamilies and 333 of 765 genera.The subfamilies are maximally supported as mono-phyletic.The clade comprising subfamilies Cercidoideae and Detarioideae is sister to the remaining legumes,and Duparquetioideae and Dialioideae are successive sisters to the clade of Papilionoideae and Caesalpinioideae.Molecular clock estimation revealed an early radiation of subfamilies near the K/Pg boundary,marked by mass extinction,and subsequent divergence of most tribe-level clades within~15 million years.Phylogenomic analyses of thousands of gene families support 28 proposed putative whole-genome duplication/whole-genome triplication events across Fabaceae,including those at the ancestors of Fabaceae and five of the subfamilies,and further analyses supported the Fabaceae ancestral polyploidy.The evolution of rhizobial nitrogen-fixing nodulation in Fabaceae was probed by ancestral character reconstruction and phylogenetic analyses of related gene families and the results support the hypotheses of one or two switches)to rhizobial nodulation followed by multiple losses.Collectively,these results provide a foundation for further morphological and functional evolutionary analyses across Fabaceae. | Yiyong Zhao Rong Zhang Kai-Wen Jiang Ji Qi Yi Hu Jing Guo Renbin Zhu Taikui Zhang Ashley N.Egan Ting-Shuang Yi Chien-Hsun Huang Hong Ma | 2021 | Molecular Plant2021，14，5： | 8 |
| 3 | Stimulation of gaseous phosphine production from Antarctic seabird guanos and ornithogenic soils显示文摘Matrix-bound phosphine(MBP) is a general term used to indicate non-gaseous reduced phosphorus compounds that are transformed into phosphine gas upon reaction with bases or acids.Antarctic seabird guanos and ornithogenic soils were used as materials to compare the different digestion methods for transforming matrix-bound phosphine into phosphine gas.The results demonstrated that more phosphine gas in most of Antarctic environmental materials was formed of matrix-bound phosphine by caustic digestion than by acidic digestion.The comparative study on different digestion methods also revealed that the fraction of MBP converted to gaseous phosphine during the digestion depended on the temperature.The optimal digestion temperature was close to 70℃ and the optimal digestion time was about 20 min.Acidic conditions were more favorable for the release of matrix-bound phosphine compared to the neutral conditions.A proper water dilution can increase the production and emission of phosphine from the Antarctic penguin guanos. | ZHU Renbin LIU Yashu SUN Jianjun SUN Liguang GENG Jinju | 2009 | Journal of Environmental Sciences2009，21，2： | 3 |
| 4 | Potential methane and nitrous oxide production and respiration rates from penguin and seal colony tundra soils during freezing–thawing cycles under different water contents in coastal Antarctica显示文摘In coastal Antarctica, frequent freezing–thawing cycles(FTCs) and changes to the hydrological conditions may affect methane(CH_4) and nitrous oxide(N_2O) production and respiration rates in tundra soils, which are difficult to observe in situ. Tundra soils including ornithogenic tundra soil(OAS), seal colony soil(SCS) and emperor penguin colony soil(EPS) were collected. In laboratory, we investigated the effects of FTCs and water addition on potential N_2O and CH_4 production and respiration rates in the soils. The CH_4 fluxes from OAS and SCS were much less than that from EPS. Meanwhile, the N_2O fluxes from OAS and EPS were much less than that from SCS. The N_2O production rates from all soils were extremely low during freezing, but rapidly increased following thawing. In all cases, FTC also induced considerably enhanced soil respiration, indicating that soil respiration response was sensitive to the FTCs. The highest cumulative rates of CH_4, N_2O and CO_2 were 59.5 mg CH_4-C·kg^(-1) in EPS, 6268.8 μg N_2O-N·kg^(-1) in SCS and 3522.1 mg CO_2-C·kg^(-1) in OAS. Soil water addition had no significant effects on CH_4 production and respiration rates, but it could reduce N_2O production in OAS and EPS, and it stimulated N_2O production in SCS. Overall, CH_4 and N_2O production rates showed a trade-off relationship during the three FTCs. Our results indicated that FTCs greatly stimulated soil N_2O and CO_2 production, and water increase has an important effect on soil N_2O production in coastal Antarctic tundra. | LIU Yashu ZHANG Wanying ZHU Renbin XU Hua | 2017 | Advances in Polar Science2017，28，1： | 2 |
| 5 | Ecological responses of typical Antarctic marine organisms to climate change and anthropogenic impacts显示文摘To improve our understanding and ability to predict biological responses to global climate change, it is important to be able to distinguish the influences of natural forcing from anthropogenic impacts. In the ice-free areas of Antarctica, lake and terrestrial sediments that contain penguin guanos, seal excrement and other biological remains provide natural archives of ecological, geological and climatic information that range from hundreds to thousands of years old. Our review focuses on the paleoecology of typical Antarctic marine organisms(penguins, seals and Antarctic krill) and their responses to climate change and human activities over centennial and millennial timescales. Land-based seabirds and marine mammals play an important role in linking the marine and terrestrial ecosystems and act as bio-vectors, transporting large amounts of nutrients and contaminants from ocean to land. | YANG Lianjiao HUANG Tao XIE Zhouqing LIU Xiaodong ZHU Renbin CHU Zhuding WANG Yuhong SUN Liguang | 2017 | Advances in Polar Science2017，28，2： | 2 |
| 6 | Alkaline phosphatase activity in ornithogenic soils in polar tundra显示文摘Phosphatase plays an important role in the microbial liberation of phosphorus in soil systems.In this study,alkaline phosphatase activity (APA) was investigated from tundra ornithogenic soil profiles in Antarctica and Arctic.The organic carbon (TOC),total nitrogen (TN),and phosphorus fractions and pH were also analyzed in these soils.The correlation between APA and soil chemical properties is discussed.In almost all the soil profiles,APA showed the same variation patterns.The maximum APA appeared in the surface layers,and decreased with soil depth.The APA ranged from 1.00 ppm to 1 403.5 ppm with an average of approximately 408.3 ppm.The APA showed a significant positive correlation with TOC (r =0.70,p <0.001),TN (r =0.43,p =0.002),total phosphorus (r =0.39,p <0.05)and inorganic phosphorus (r =0.40,p =0.037),indicating that they were predominant factors affecting APA in the polar tundra soils.In addition,APA showed a significant negative correlation with Cu and Zn concentrations in the soils,indicating that Cu and Zn may inhibit APA.Our results showed that APA could be used as an important indicator for soil fertility in polar tundra ecosystems. | MA DaWei ZHU RenBin DING Wei SUN JianJun LIU YaShu SUN LiGuang | 2011 | Advances in Polar Science2011，22，2： | 2 |
| 7 | The first determination of atmospheric phosphine in Antarctica显示文摘It is generally thought that phosphine (PH3) concentrations exist at the low ng/m3 level during the night and at the pg/m3 level during daylight in the remote atmosphere of the lower troposphere. The first de- termination of gaseous PH3 on the Antarctic Millor Peninsula is reported in this paper. No PH3 was de- tected in the air samples around 10:00 when it was sunny. However, PH3 was found in all the 10:00 air samples when it was cloudy or light snow with the average of 75.3±28.8 ng/m3 (n=5). It was also found in nearly all the samples around 22:00 with the average of 87.2±70.9 ng/m3 (n=11). Atmospheric PH3 concentrations around 22:00 were generally higher than those around 10:00 in January and they were almost the same in February. In addition, PH3 concentrations around 22:00 showed a downtrend with the decreasing air temperature, suggesting that light intensity and air temperature had an important effect on atmospheric PH3 concentration. It is very surprising to have found that high concentrations of PH3 exist in the Antarctic atmosphere under the influence of strong UV-radiation and light intensity. The tentative analyses show that dry, cold and very clean atmosphere may be very suitable for the PH3 sur- vival and cause the concentration to increase and accumulate in the local atmosphere. New ap- proaches for the PH3 formation and the process of atmospheric chemistry may exist under such an extreme environment. Atmospheric PH3 may also be from the emissions of local sources. | ZHU RenBin KONG DeMing SUN LiGuang GENG JinJu WANG XiaoRong | 2007 | Chinese Science Bulletin2007，52，1： | 1 |
| 8 | Matrix-bound phosphine in Antarctic biosphere显示文摘 | Renbin Zhu Liguang Sun Deming Kong Jinju Geng Ning Wang Qiang Wang Xiaorong Wang | 2006 | Chemosphere2006，，8： | 1 |
| 9 | Temporal and spatial variations of nitrous oxide fluxes from the littoral zones of three alga-rich lakes in coastal Antarctica显示文摘 | Yashu Liu Renbin Zhu Dawei Ma Hua Xu Yuhan Luo Tao Huang Liguang Sun | 2010 | Atmospheric Environment2010，，7： | 1 |
| 10 | Nitrous oxide emissions from tundra soil and snowpack in the maritime Antarctic显示文摘 | Renbin Zhu Liguang Sun Weixin Ding | 2004 | Chemosphere2004，，11： | 1 |
| 11 | Summertime CO_2 fluxes from tundra of Ny-?lesund in the High Arctic显示文摘The Arctic ecosystem, especially High Arctic tundra, plays a unique role in the global carbon cycle because of amplified warming in the region. However, relatively little research has been conducted in High Arctic tundra compared with other global ecosystems. In the present work, summertime net ecosystem exchange(NEE), ecosystem respiration(ER), and photosynthesis were investigated at six tundra sites(DM1–DM6) on Ny-?lesund in the High Arctic. NEE at the tundra sites varied between a weak sink and strong source(-3.3 to 19.0 mg CO_2·m^(-2)·h^(-1)). ER and gross photosynthesis were 42.8 to 92.9 mg CO_2·m^(-2)·h^(-1) and 54.7 to 108.7 mg CO_2·m^(-2)·h^(-1), respectively. The NEE variations showed a significant correlation with photosynthesis rates, whereas no significant correlation was found with ecosystem respiration, indicating that NEE variations across the region were controlled by differences in net uptake of CO_2 owing to photosynthesis, rather than by variations in ER. A Q_(10) value of 1.80 indicated weak temperature sensitivity of tundra ER and its response to future global warming. NEE and gross photosynthesis also showed relatively strong correlations with C/N ratio. The tundra ER, NEE, and gross photosynthesis showed variations over slightly waterlogged wetland tundra, mesic and dry tundra. Overall, soil temperature, nutrients and moisture can be key effects on CO_2 fluxes, ecosystem respiration, and NEE in the High Arctic. | LI Fangfang ZHU Renbin BAO Tao WANG Qing XU Hua | 2017 | Advances in Polar Science2017，28，1： | 1 |
| 12 | Phosphine in the marine atmosphere along a hemispheric course from China to Antarctica 显示文摘 | I Zhu Renbin Glindemann D Kong Deming | 2007 | Atmospherle Environment2007，41，： | 1 |
| 13 | Methane and nitrous oxide fluxes from four tundra ecotopes in Ny-lesund of the High Arctic显示文摘During the summers of 2008 and 2009, net methane(CH4) and nitrous oxide(N2O) fluxes were investigated from 4 tundra ecotopes: normal lowland tundra(LT), bird sanctuary tundra(BT), the tundra in an abandoned coal mine(CT) and the tundra in scientific bases(ST) in Ny-Alesund of the High Arctic. Tundra soils in CT(184.5 ± 40.0 μg CH4/(m2·hr)) and ST(367.6 ± 92.3 μg CH4/(m2·hr)) showed high CH4 emissions due to the effects of human activities, whereas high CH4 uptake or low emission occurred in the soils of LT and BT.The lowland tundra soils(mean,-4.4–4.3 μg N2O/(m2·hr)) were weak N2 O sources and even sinks. Bird activity increased N2 O emissions from BT with the mean flux of7.9 μg N2O/(m2·hr). The mean N2 O fluxes from CT(45.4 ± 10.2 μg N2O/(m2·hr)) and ST(78.8 ± 18.5 μg N2O/(m2·hr)) were one order of magnitude higher than those from LT and BT, indicating that human activities significantly increased N2 O emissions from tundra soils. Soil total carbon and water regime were important factors affecting CH4 fluxes from tundra soils. The N2 O fluxes showed a significant positive correlation with ammonia nitrogen(NH4+–N) contents(r = 0.66, p < 0.001) at all the observation sites, indicating that ammonia nitrogen(NH4+–N) content acted as a strong predictor for N2 O emissions from tundra soils. The CH4 and N2O fluxes did not correspond to the temperature variations of soil at 0–15 cm depths.Overall our results implied that human activities might have greater effects on soil CH4 and N2O emissions than current climate warming in Ny-Alesund, High Arctic. | Qingqing Chen Renbin Zhu Qing Wang Hua Xu | 2014 | Journal of Environmental Sciences2014，26，7： | 1 |
| 14 | A 1500-year record of lead, copper, arsenic, cadmium, zinc level in Antarctic seal hairs and sediments显示文摘 | Xuebin Yin Xiaodong Liu Liguang Sun Renbin Zhu Zhouqing Xie Yuhong Wang | 2006 | Science of the Total Environment2006，，1： | 1 |
| 15 | Tropospheric phosphine and its sources in coastal Antarctica 显示文摘 | Zhu Renbin Kong Deming Sun Liguang | 2006 | Environmental Science & Technology2006，40，： | 1 |
| 16 | An Impossibility Theorem for Nonbinary Social Choice | LUO Yunfeng XIAO Renbin ZHU Mingfu(Institute of Systems Engheering)(Huazhong University of Science and Technology, Wuhan 430074, P.R. China) | 1999 | Systems Science and Systems Engineering1999，9，2： | 1 |
| 17 | Monitoring atmospheric nitrous oxide background concentrations at Zhongshan Station,east Antarctica显示文摘At present,continuous observation data for atmospheric nitrous oxide(N_2O) concentrations are still lacking,especially in east Antarctica.In this paper,nitrous oxide background concentrations were measured at Zhongshan Station(69°22′25″S,76°22′14″E),east Antarctica during the period of 2008–2012,and their interannual and seasonal characteristics were analyzed and discussed.The mean N_2O concentration was 321.9 n L/L with the range of 320.5–324.8 n L/L during the five years,and it has been increasing at a rate of 0.29% year-1.Atmospheric N_2O concentrations showed a strong seasonal fluctuation during these five years.The concentrations appeared to follow a downtrend from spring to autumn,and then increased in winter.Generally the highest concentrations occurred in spring.This trend was very similar to that observed at other global observation sites.The overall N_2O concentration at the selected global sites showed an increasing annual trend,and the mean N_2O concentration in the Northern Hemisphere was slightly higher than that in the Southern Hemisphere.Our result could be representative of atmospheric N_2O background levels at the global scale.This study provided valuable data for atmospheric N_2O concentrations in east Antarctica,which is important to study on the relationships between N2 O emissions and climate change. | Wenjuan Ye Lingen Bian Can Wang Renbin Zhu Xiangdong Zheng Minghu Ding | 2016 | Journal of Environmental Sciences2016，28，9： | 1 |
| 18 | Potential methane production rates and its carbon isotopic composition from ornithogenic tundra soils in coastal Antarctic显示文摘Methane(CH_4) is one of important greenhouse gases with chemical activity. The determination of isotopic compositions for CH_4 emitted from the soils helps us to understand its production mechanisms. CH_4 isotope measurements have been conducted for different types of global terrestrial ecosystems. However, no isotopic data of CH_4 have been reported from Antarctic tundra soils. In this paper, ornithogenic soil profiles were collected from four penguin colonies, and potential CH_4 production rates and its 13 C ratio(δ^(13)C) were investigated based upon laboratory incubation experiments. The mean CH_4 production rates are highly variable in these soil profiles, ranging from 0.7 to 20.3 μg CH_4-C kg^(-1)?h^(-1). These ornithogenic soils had high potential production rates of CH_4 under ambient air incubation or under N2 incubation, indicating the importance of potential CH_4 emissions from penguin colonies. Most of the soil samples had higher δ^(13)C-CH_4 under N2 incubation(-39.28%^-43.53%) than under the ambient air incubation(-42.81%^-57.19%). Highly anaerobic conditions were conducive to the production of CH_4 enriched in 13 C, and acetic acid reduction under N2 incubation might be a predominant source for soil CH_4 production. Overall the δ^(13)C-CH_4 showed a significant negative correlation with CH_4 production rates in ornithogenic tundra soils under N2 incubation(R2=0.41, p<0.01) or under the ambient air incubation(R2=0.50, p<0.01). Potential CH_4 production from ornithogenic soils showed a significant positive correlation with total phosphorus(TP) and NH_4^+-N contents, p H and soil moisture(Mc), but the δ^(13)C-CH_4 showed a significant negative correlation with TP and NH_4^+-N contents, p H and Mc, indicating that the deposition amount of penguin guano increased potential CH_4 production rates from tundra soils, but decreased the δ^(13)C-CH_4. The CH_4 emissions from the ornithogenic soils affect carbon isotopic compositions of atmospheric CH_4 in coastal Antarctica. | BAO Tao ZHU Renbin BAI Bo XU Hua | 2016 | Advances in Polar Science2016，27，1： | 1 |
| 19 | Nitrous oxide flux to the atmosphere from two coastal tundra wetlands in eastern Antarctica 显示文摘 | Renbin Zhu Yashu Liu Jing Ma | 2008 | Atmospheric Environment2008，42，10： | 1 |
| 20 | On the Merrifield-Simmons index and Hosoya index of bicyclic graphs with a given girth 显示文摘 | Sun Renbin Zhu Zhongxun Tan Liansheng | 2012 | Ars Combinatoria2012，103，： | 1 |
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