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3篇 您的检索式:作者名="QIN Ruimin"
    题名 作者 年代 出处 被引量
1Effects of long-term warming on the aboveground biomass and species diversity in an alpine meadow on the Qinghai-Tibetan Plateau of China显示文摘Ecosystems in high-altitude regions are more sensitive and respond more rapidly than other ecosystems to global climate warming.The Qinghai-Tibet Plateau(QTP)of China is an ecologically fragile zone that is sensitive to global climate warming.It is of great importance to study the changes in aboveground biomass and species diversity of alpine meadows on the QTP under predicted future climate warming.In this study,we selected an alpine meadow on the QTP as the study object and used infrared radiators as the warming device for a simulation experiment over eight years(2011-2018).We then analyzed the dynamic changes in aboveground biomass and species diversity of the alpine meadow at different time scales,including an early stage of warming(2011-2013)and a late stage of warming(2016-2018),in order to explore the response of alpine meadows to short-term(three years)and long-term warming(eight years).The results showed that the short-term warming increased air temperature by 0.31℃and decreased relative humidity by 2.54%,resulting in the air being warmer and drier.The long-term warming increased air temperature and relative humidity by 0.19℃and 1.47%,respectively,and the air tended to be warmer and wetter.The short-term warming increased soil temperature by 2.44℃and decreased soil moisture by 12.47%,whereas the long-term warming increased soil temperature by 1.76℃and decreased soil moisture by 9.90%.This caused the shallow soil layer to become warmer and drier under both short-term and long-term warming.Furthermore,the degree of soil drought was alleviated with increased warming duration.Under the long-term warming,the importance value and aboveground biomass of plants in different families changed.The importance values of grasses and sedges decreased by 47.56%and 3.67%,respectively,while the importance value of weeds increased by 1.37%.Aboveground biomass of grasses decreased by 36.55%,while those of sedges and weeds increased by 8.09%and 15.24%,respectively.The increase in temperature had a non-significant effect on species diversity.The species diversity indices increased at the early stage of warming and decreased at the late stage of warming,but none of them reached significant levels(P>0.05).Species diversity had no significant correlation with soil temperature and soil moisture under both short-term and long-term warming.Soil temperature and aboveground biomass were positively correlated in the control plots(P=0.014),but negatively correlated under the long-term warming(P=0.013).Therefore,eight years of warming aggravated drought in the shallow soil layer,which is beneficial for the growth of weeds but not for the growth of grasses.Warming changed the structure of alpine meadow communities and had a certain impact on the community species diversity.Our studies have great significance for the protection and effective utilization of alpine vegetation,as well as for the prevention of grassland degradation or desertification in high-altitude regions.WEN Jing QIN Ruimin ZHANG Shixiong YANG Xiaoyan XU Manhou 2020Journal of Arid Land2020,12,2:11
2Facile synthesis of porous nitrogen-doped holey graphene as an efficient metal-free catalyst for the oxygen reduction reaction显示文摘做氮的 graphene 是为氧减小反应(ORR ) 的高贵基于金属的 electrocatalysts 的代替的一个有希望的候选人。进做氮的 graphene 的毛孔和洞的增加由介绍丰富的暴露的边提高 ORR 活动,加速集体转移,并且阻碍 graphene 表的聚集。此处,我们在场为经由脲和镁醋酸盐 tetrahydrate 的热分解产生多孔的有穴的做氮的 graphene (PHNG ) 的直接却有效的策略。由于联合效果在里面 situ 产生了气体和 MgO nanoparticles,综合 PHNG 在弄皱的 graphene 之中展示了不仅众多的 out-of-plane 毛孔在装配 graphene 的表,而且贯穿的 nanoscale (5-15 nm ) 洞。而且,做 PHNG 的配置的氮被 thermal 以后处理在不同温度优化。pyridinic 和第四级的氮的全面内容断然与 ORR 活动相关,这被发现;特别地, pyridinic 氮为 ORR 产生最理想的特征。这个工作为基于 PHNG 的材料的合成揭示新线路并且阐明到 ORR 的各种各样的氮种类的贡献。Li Qin Ruimin Ding Huixiang Wang Jianghong Wu Conghui Wang Chenghua Zhang Yao Xu Liancheng Wang Baoliang Lv 2017Nano Research2017,10,1:3
3Simultaneous regulation on coordination environment and interfacial chemistry via taurine for stabilized Zn metal anode显示文摘Aqueous Zn-ion batteries(AZIBs)are the potential options for the next-generation energy storage scenarios due to the cost effectiveness and intrinsic safety.Nevertheless,the industrial application of AZIBs is still impeded by a series of parasitic reactions and dendrites at zinc anodes.In this study,taurine(TAU)is used in electrolyte to simultaneously optimize the coordination condition of the ZnSO4electrolyte and interfacial chemistry at the anode.TAU can preferentially adsorb with the zinc metal and induce an in situ stable and protective interface on the anode,which would avoid the connection between H_(2)O and the zinc metal and promote the even deposition of Zn^(2+).The resulting Zn//Zn batteries achieve more than 3000 hours long cyclic lifespan under 1 mA cm^(-2)and an impressive cumulative capacity at 5 mA cm^(-2).Moreover,Zn//Cu batteries can realize a reversible plating/stripping process over 2,400cycles,with a desirable coulombic efficiency of 99.75%(1 mA cm^(-2)).Additionally,the additive endows Zn//NH_(4)V_(4)O_(10)batteries with more stable cyclic performance and ultrafast rate capability.These capabilities can promote the industrial application of AZIBs.Xin Xu Junyi Yin Ruimin Qin Haoliang Liu Xiang Feng Minghui Wang Mingyan Li Weiyu Sun Weichen Shi Bing Xiao Yaqiong Su Yonghong Cheng 2023Journal of Energy Chemistry2023,,11:0
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