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| 1 | Land-use impact on soil carbon and nitrogen sequestration in typical steppe ecosystems, Inner Mongolia显示文摘在内部蒙古的草地为土壤碳(C) 隐遁探索最佳的陆地使用,我们在使遭到了到不同陆地使用类型的 8 个花地并且地形的类似的地点在土壤和土壤部分调查了 C 和氮(N) 存储(免费放牧的、放牧排除,刈草,放牧的冬季,和开垦) 。与免费放牧的草地相比,在 0-50 厘米层的 C 和 N 存储增加了18.3%( 15.5 Mg C ha1 )并且9.3%( 0.8 Mg N ha1 )在以后擦伤排除10年,分别地并且21.9%( 18.5 Mg C ha1 )并且11.5%( 0.9 Mg N ha1 )在30年的放牧排除以后分别地。同样,玷污 15.3% 增加的 C 和 N 存储(12.9 Mg C ha1 ) 并且 10.2%(0.8 Mg N ha1 ) 在 10 年的刈草以后,分别地并且 19.2%(16.2 Mg C ha1 ) 并且 7.1%(0.6 Mg N ha1 ) 在分别地的 26 年的刈草以后。相反,土壤 C 和 N 存储在 10.6% 衰退了(9.0 Mg C ha1 ) 并且 11.4%(0.9 Mg N ha1 ) 在 49 年的开垦以后分别地。而且, C 和 N 存储的增加主要与擦伤排除并且刈草在 0-10 厘米土壤层发生在沙和淤泥部分。我们的调查结果提供了内部蒙古的草地有能力扣押的证据在有改进管理的土壤的 C 和 N 练习,它在顺序:放牧排除 > 刈草 > 冬季放牧 > 开垦。 | HE Nianpeng ZHANG Yunhai DAI Jingzhong HAN Xingguo BAOYIN Taogetao YU Guirui | 2012 | Journal of Geographical Sciences2012，22，5： | 19 |
| 2 | Nitrogen deposition alters soil chemical properties and bacterial communities in the Inner Mongolia grassland显示文摘Nitrogen deposition has dramatically altered biodiversity and ecosystem functioning on the earth;however,its effects on soil bacterial community and the underlying mechanisms of these effects have not been thoroughly examined.Changes in ecosystems caused by nitrogen deposition have traditionally been attributed to increased nitrogen content.In fact,nitrogen deposition not only leads to increased soil total N content,but also changes in the NH 4 +-N content,NO 3-N content and pH,as well as changes in the heterogeneity of the four indexes.The soil indexes for these four factors,their heterogeneity and even the plant community might be routes through which nitrogen deposition alters the bacterial community.Here,we describe a 6-year nitrogen addition experiment conducted in a typical steppe ecosystem to investigate the ecological mechanism by which nitrogen deposition alters bacterial abundance,diversity and composition.We found that various characteristics of the bacterial community were explained by different environmental factors.Nitrogen deposition decreased bacterial abundance that is positively related to soil pH value.In addition,nitrogen addition decreased bacterial diversity,which is negatively related to soil total N content and positively related to soil NO 3-N heterogeneity.Finally,nitrogen addition altered bacterial composition that is significantly related to soil NH 4 +-N content.Although nitrogen deposition significantly altered plant biomass,diversity and composition,these characteristics of plant community did not have a significant impact on processes of nitrogen deposition that led to alterations in bacterial abundance,diversity and composition.Therefore,more sensitive molecular technologies should be adopted to detect the subtle shifts of microbial community structure induced by the changes of plant community upon nitrogen deposition. | Ximei Zhang Xingguo Han | 2012 | Journal of Environmental Sciences2012，24，8： | 18 |
| 3 | Application of two remote sensing GPP algorithms at a semiarid grassland site of North China显示文摘Estimation of gross primary production(GPP)from remote sensing data is an important approach to study regional or global carbon cycle.However,for a given algorithm,it usually has its limitation on applications to a wide range of vegetation types and/or under diverse environmental conditions.This study was conducted to compare the performance of two remote sensing GPP algorithms,the MODIS GPP and the vegetation photosynthesis model(VPM),in a semiarid temperate grassland ecosystem.Methods The study was conducted at a typical grassland site in Ujimuqin of Inner Mongolia,North China,over 2 years in 2006 and 2007.Environmental controls on GPP measured by the eddy covariance(EC)technique at the study site were first investigated with path analysis of meteorological and soil moisture data at a daily and 8-day time steps.The estimates of GPP derived from the MODIS GPP and the VPM with site-specific inputs were then compared with the values of EC measurements as ground truthing at the site.Site-specific emax(a)was estimated by using rectangular hyperbola function based on the 7-day flux data at 30-min intervals over the peak period of the growing season(May to September).Important Findings Between the two remote sensing GPP algorithms and various estimates of the fraction of absorbed photosynthetic active radiation(FPAR),the VPM based on FPAR derived from the enhanced vegetation index(EVI)works the best in predicting GPP against the ground truthing of EC GPP.A path analysis indicates that the EC GPP in this semiarid temperate grassland ecosystem is controlled predominantly by both soil water and temperature.The site water condition is slightly better simulated by the moisture multiplier in the VPM than in the MODIS GPP algorithm,which is a most probable explanation for a better performance of the VPM than MODIS GPP algorithm in this semiarid grassland ecosystem. | Jianfeng Liu Osbert Jianxin Sun Hongmei Jin Zhiyong Zhou Xingguo Han | 2011 | Journal of Plant Ecology2011，4，4： | 5 |
| 4 | Wheat breeding history reveals synergistic selection of pleiotropic genomic sites for plant architecture and grain yield显示文摘Diversity surveys of crop germplasm are important for gaining insights into the genomic basis for plant architecture and grain yield improvement,which is still poorly understood in wheat.In this study,we exome sequenced 287 wheat accessions that were collected in the past 100 years.Population genetics analysis identified that 6.7%of the wheat genome falls within the selective sweeps between landraces and cultivars,which harbors the genes known for yield improvement.These regions were asymmetrically distributed on the A and B subgenomes with regulatory genes being favorably selected.Genome-wide association study(GWAS)identified genomic loci associated with traits for yield potential,and two underlying genes,TaARF12 encoding an auxin response factor and TaDEP1 encoding the G-proteinγ-subunit,were located and characterized to pleiotropically regulate both plant height and grain weight.Elite single-nucleotide haplotypes with increased allele frequency in cultivars relative to the landraces were identified and found to have accumulated over the course of breeding.Interestingly,we found that TaARF12 and TaDEP1 function in epistasis with the classical plant height Rht-1 locus,leading to propose a“Green Revolution”-based working model for historical wheat breeding.Collectively,our study identifies selection signatures that fine-tune the gibberellin pathway during modern wheat breeding and provides a wealth of genomic diversity resources for the wheat research community. | Aili Li Chenyang Hao Zhenyu Wang Shuaifeng Geng Meiling Jia Fang Wang Xiang Han Xingchen Kong Lingjie Yin Shu Tao Zhongyin Deng Ruyi Liao Guoliang Sun Ke Wang Xingguo Ye Chengzhi Jiao Hongfeng Lu Yun Zhou Dengcai Liu Xiangdong Fu Xueyong Zhang Long Mao | 2022 | Molecular Plant2022，15，3： | 4 |
| 5 | Variations in leaf carbon isotope composition along an arid and semi-arid grassland transect in northern China显示文摘Aims We aimed to quantify the variation of leafδ^(13)C along an arid and semi-arid grassland transect in northern China.We also evaluated the effects of environmental factors(i.e.precipitation,temperature and altitude)on the spatial variation of leafδ^(13)C in northern grasslands and Tibetan Plateau,China.Method We sampled leaves of plant species belonging to three herb genera(Stipa spp.,Leymus spp.and Cleistogenes spp.)and three shrub genera(Caragana spp.,Reaumuria spp.and Nitraria spp.)for carbon isotope analysis from 50 locations along a 3200-km arid and semiarid grassland transect in northern China.Leafδ^(13)C data in Tibetan Plateau and northern grasslands in China were also compiled from studies in literature.Important Findings Along the transect,leafδ^(13)C for C_(3)plants ranged from−28.0‰to−23.3‰,and from−16.3‰to−13.8‰for C_(4)plant Cleistogenes spp..The change in leafδ^(13)C ranged from−0.26‰to−3.51‰with every 100 mm increase of annual precipitation,and leafδ^(13)C of shrubs(Nitraria spp.,Reaumuria spp.and Caragana spp.)responded more markedly to climatic factors(precipitation and temperature)than that of herbs(Stipa spp.,Leymus spp.and Cleistogenes spp.),indicating higher sensitivity of shrubδ^(13)C to climatic changes.The most important factor regulating spatial variations of leafδ^(13)C in Tibetan Plateau was altitude,while it was precipitation in northern grasslands.Our results suggested that shrubs are more adapted to increasing drought in arid and semi-arid grassland.Controls of environmental factors on leafδ^(13)C depended on the most limiting factors in arid grassland(precipitation)and Tibetan grasslands(atmospheric CO_(2)concentration). | Chao Wang Dongwei Liu Wentao Luo Yunting Fang Xiaobo Wang Xiaotao Lü Yong Jiang Xingguo Han Edith Bai | 2016 | Journal of Plant Ecology2016，9，5： | 3 |
| 6 | Effects of the frequency and the rate of N enrichment on community structure in a temperate grassland显示文摘Aims Nitrogen(N)enrichment caused by human activities threatens bio-diversity and alters plant community composition and structure.It has been found that heavy and infrequent N inputs may over-estimate species extinction,but it remains unclear whether plant community structure will equally respond to frequent reactive N enriched conditions.Methods We independently manipulated the rates and the frequencies of N addition in a temperate steppe,northern China,between 2008 and 2013.Important Findings We found that plant community structure changes,measured by‘Euclidean distance’involving species richness,composition and productivity,were significantly positively related to increasing N enrichment rates rather than frequencies.Changes in aboveground net primary productivity(ANPP),plant species richness and shifts in dominant species were observed.Community ANPP increased with N enrichment,whereas species richness reduced.The frequency of N enrichment increased species richness but had no impacts on community ANPP and the relative ANPP of the two dominant spe-cies,C3 perennial bunchgrass Stipa grandis and C3 perennial rhi-zome grass Leymus chinensis.The ANPP and relative ANPP of the two dominant species were significantly negatively correlated with each other.Moreover,changes in the relative ANPP of S.grandis was negatively associated with the changes in community structure.After 5 years’treatment,direct influence of the frequency of N en-richment on plant community structure was not observed,but the effects of the rate of N enrichment were apparent.Our results sug-gested that further study in various ecosystems and with long-term and well-controlled comparisons the frequency vs.the rate of N enrichment may still be needed. | Yunhai Zhang Jing Wang Carly J.Stevens Xiaotao Lü Nianpeng He Changhui Wang Xingguo Han | 2018 | Journal of Plant Ecology2018，11，5： | 2 |
| 7 | Stochastic processes play more important roles in driving the dynamics of rarer species显示文摘Aims One major goal of modern community ecology is to understand how deterministic and stochastic processes combine to drive community assembly.However,little empirical knowledge is known about how their relative importance varies between common and rare species.Methods We exploited two 30-year data sets of plant communities in a temperate steppe using two different methods.One is a null model method,and the other is a recently developed direct-calculation method.Important Findings We found that stochastic processes tended to be more important in influencing rare than common species.This finding suggests that stochastic forces may play a more important role in structuring communities with more rare species,providing a possible solution to the debate on the varied importance of deterministic and stochastic processes among different communities. | Ximei Zhang Zhichao Pu Yuanheng Li Xingguo Han | 2016 | Journal of Plant Ecology2016，9，3： | 2 |
| 8 | Ammonia emissions from soil under sheep grazing in Inner Mongolian grasslands of China显示文摘Ammonia (NH3) emission and redeposition play a major role in terrestrial nitrogen (N) cycles and can also cause environmental problems, such as changes in biodiversity, soil acidity, and eutrophication. Previous field grazing experiments showed inconsistent (positive, neutral, and negative) NH3 volatilization from soils in response to varying grazing intensities. However, it remains unclear whether, or to what extent, NH3 emissions from soil are affected by increasing grazing intensities in Inner Mongolian grasslands. Using a 5-year grazing experiment, we investigated the relationship between NH3 volatilization from soil and grazing pressure (0.0, 3.0, 6.0, and 9.0 sheep/hm2 ) from June to September of 2009 and 2010 via the vented-chamber method. The results show that soil NH3 volatilization was not significantly different at different grazing intensities in 2009, although it was higher at the highest stocking rate during 2010. There was no significant linear relationship between soil NH3 volatilization rates and soil NH4+-N, but soil NH3 volatilization rates were significantly related to soil water content and air temperature. Grazing intensities had no significant influence on soil NH3 volatilization. Soil NH3 emissions from June to September (grazing period), averaged over all grazing intensities, were 9.6±0.2 and 19.0±0.2 kg N/hm2 in 2009 and 2010, respectively. Moreover, linear equations describing monthly air temperature and precipitation showed a good fit to changes in soil NH3 emissions (r=0.506, P=0.014). Overall, grazing intensities had less influence than that of climatic factors on soil NH3 emissions. Our findings provide new insights into the effects of grazing on NH3 volatilization from soil in Inner Mongolian grasslands, and have important implications for understanding N cycles in grassland ecosystems and for estimating soil NH3 emissions on a regional scale. | YunHai ZHANG NianPeng HE GuangMing ZHANG JianHui HUANG QiBing WANG QingMin PAN XingGuo HAN | 2013 | Journal of Arid Land2013，5，2： | 2 |
| 9 | Evaluation of SARS-CoV-2-Neutralizing Nanobody Using Virus Receptor Binding Domain-Administered Model Mice显示文摘Due to the rapid spread of coronavirus disease 2019(COVID-19),there is an urgent requirement for the development of additional diagnostic tools for further analysis of the disease.The isolated nanobody Nb11-59 binds to the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)reeptor-binding domain[RBD]with high afinity to neutralize the virus and block the angiotensin-converting enzyme 2-(ACE2-)RBD interaction.Here,we introduce a novel nanobody-based radiotracer named^(68)Ga-Nb1159.The radiotracer retained high affinity for the RBD and showed reliable radiochemical characteristics both in vitro and in vivo.Predinical positron emission tomography(PET)studies of Ga-Nb1159 in mice revealed is rapid dearance from circulation and robust uptake into the renal and urinary systems.Fortunately,^(68)Ga-Nb1159 could speifcally reveal the distribution of the RBD in mice.This sudy also helped to evaluate the pharmacodynamic efects of the neutralizing nanobody.Moreover,^(68)Ga-Nb1159 may be a promising l0ol lo explore the distribution of the RBD and improve the understanding of the virus.In particular,this study identified a novel molecular radioagent and established a reliable evaluation method for speifially investigating the RBD through noninvasive and visual PET technology. | Song Liu Guanghui Li Lei Ding Jin Ding Qian Zhang Dan Li Xingguo Hou Xiangxing Kong Jing Zou Shiming Zhang Hongbin Han Yakun Wan Zhi Yang Hua Zhu | 2022 | Research2022，，2： | 2 |
| 10 | Reduced dietary nitrogen with a high Lys:CP ratio restricted dietary N excretion without negatively affecting weaned piglets显示文摘We hypothesized that balancing the content of exogenous amino acids, especially lysine, to reduce protein content in swine diets could reduce nitrogen(N) pollution associated with animal husbandry. Two experiments(45 d each experiment) were performed on weaned piglets(Duroc x Landrace x Yorkshire,28 d of age) to test this and to determine the optimal lysine to crude protein(Lys:CP) ratio in diet. In Exp. 1,12 piglets(6 replicates [n = 6]) were fed diets containing different levels of CP(17% and 20%) but the same level of Lys, Increased CP content resulted in significant increases(P < 0.05) of average daily gain(ADG), average daily feed intake(ADFI), and body weight(BW);but did not affect the feed to gain ratio. In Exp. 2,24 piglets(8 replicates [n = 8]) were fed 1 of 3 diets as follows: 1) 20% CP with a regular Lys:CP ratio(6.23%, control);2) 17% CP with a reduced Lys:CP ratio(6.14%, LL);or 3) 17% CP with a standard Lys:CP ratio(7.32%, SL). The ADG, final BW, serum concentrations of growth hormone and insulin-like growth factor-1, villus height in the jejunum, and villus height to crypt depth ratio were the lowest in piglets fed LL diet, whereas blood urea N concentration was the lowest and the value of lipase activity was the highest in the piglets fed SL diet. The SL diet did not affect growth performance,intestinal morphology, or serum hormone concentrations, indicating that reduced dietary N with a high Lys:CP ratio can efficiently reduce dietary N excretion without negatively affecting weaned piglets. | Hongnan Liu Li Wu Hui Han Yuying Li Lijian Wang Jie Yin Wenjun Fan Miaomiao Bai Jiming Yao Xingguo Huang Tiejun Li | 2019 | Animal Nutrition2019，，2： | 2 |
| 11 | N2O emission from the semi-arid ecosystem under mineral fertilizer(urea and superphosphate) and increased precipitation in northern China显示文摘 | ZHANG Jinfeng HAN Xingguo | | 0，，2： | 1 |
| 12 | Formation mechanisms of SrTiO 3 nanoparticles under hydrothermal conditions显示文摘 | Shicheng Zhang Jiaxiang Liu Yuexin Han Bingchen Chen Xingguo Li | 2004 | Materials Science & Engineering B2004，，1： | 1 |
| 13 | Differential responses of litter decomposition to increased soil nutrients and water between two contrasting grassland plant species of Inner Mongolia, China 显示文摘 | LIU PING HUANG JIANHUI HAN XINGGUO | 2006 | Applied Soil Ecology2006，34，： | 1 |
| 14 | Restoring the degraded grassland and improving sustainability of grassland ecosystem through chicken farming: A case study in northern China显示文摘 | Hong Xu Hua Su Benying Su Xingguo Han Dilip K. Biswas Yonggeng Li | 2014 | Agriculture Ecosystems and Environment2014，，： | 1 |
| 15 | Carbon and nitrogen store and storage potential as affected by land-use in a Leymus chinensis grassland of northern China显示文摘 | Nianpeng He Qiang Yu Ling Wu Yuesi Wang Xingguo Han | 2008 | Soil Biology and Biochemistry2008，，12： | 1 |
| 16 | Determining the antioxidant activities of organic sulfides by rotary bomb oxida- tion test and pressurized differential scanning calorimetry 显示文摘 | Qiu Chao Han Sheng Cheng Xingguo | 2006 | Thermochimica Acta2006，447，： | 1 |
| 17 | Purification and characterisation of polyphenol oxidase from red swiss chard显示文摘 | GAO Zhaojian HAN Xiaohong XIAO Xingguo | | 0，，： | 1 |
| 18 | Energy balance and partition in Inner Mongolia steppe ecosystems with different land use types显示文摘 | Shiping Chen Jiquan Chen Guanghui Lin Wenli Zhang Haixia Miao Long Wei Jianhui Huang Xingguo Han | 2009 | Agricultural and Forest Meteorology2009，，11： | 1 |
| 19 | Do rhizome severing and shoot defoliation affect clonal growth of Leymus chinensis at ramet population level显示文摘 | Wang Zhengwen Li Linghao Han Xingguo Dong Ming | 2004 | Acta Oecologica2004，26，： | 1 |
| 20 | Iron-Catalyzed Aerobic Oxidation of Aldehydes: Single Component Catalyst and Mechanistic Studies显示文摘向在在空中把纯氧或氧的 1 atm 用作氧化剂和单个部件催化剂的催化数量的 MeCN 的羧基的酸的醛的氧气的氧化, Fe (没有 3)3 | Xingguo Jiang Yizhan Zhai Junyu Chen Yulin Han Zheng Yang Shengming Ma | 2018 | Chinese Journal of Chemistry2018，36，1： | 1 |
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