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| 1 | Grassland ecology in China: perspectives and challenges显示文摘During the last few decades, there have been an increasing number of studies on grassland ecology in China, involving the classic ecology concepts or theories and the applicable ecological principles of grassland conservation or management. This paper reviews the main progress in the following aspects.(1) Research on grassland species adaptation and resistance, population dynamics and foraging behavior, and biodiversity and community stability.(2) Research on managed grassland ecosystems(grassland grazing ecology) including grazing effects on grassland ecosystem function and foraging behavior by large herbivores.(3) Global climate change and grassland processes and functioning.(4) Applied research on grassland restoration and ecosystem health assessments such as vegetation restoration, restoration of ecosystem functioning, and assessment methods. There have been significant advances in grassland ecology,including the functions of ecosystem biodiversity, the ecological stoichiometry mechanisms affecting grassland community stability, grazing regulation of plant diversity and nutrient cycling. Grassland ecologists have succeeded in making these advances through observational, experimental and theoretical studies. Nevertheless, there are still significant challenges for the grassland ecology research,including understanding of grassland spatial processes,grassland grazing and multi-functionality, integrated effects of global climate change across grassland areas,as well as the ecological methodology and experimental techniques in grassland ecology. | Deli WANG Ling WANG Jushan LIU Hui ZHU Zhiwei ZHONG | 2018 | Frontiers of Agricultural Science and Engineering2018，5，1： | 6 |
| 2 | Hyperbranched polymer micelles with triple-stimuli backbone-breakable iminoboronate ester linkages显示文摘Hyperbranched polymers have attracted increasing interests due to their unique structure-related advantages and have been utilized as drug carriers for controlled delivery.However,it is still challenging to prepare multi stimuli-responsive hyperbranched polymers to sense and response the complex yet delicate changes in physiological environment.Herein,we propose a triple-stimuli backbone-breakable hyperbranched polymer(HBP(OEG-IB)),which is prepared via the convenient iminoboronate multicomponent reaction ofα,ω-di(1,2-diol)s oligo(ethylene glycol),tris(3-aminopropyl)amine and 2-formylphenylboronic acid.Upon the stimulation of CO2,lactic acid and glutathione,micelles formed by HBP(OEG-IB)could be disrupted via the dissociation of iminoboronate ester bond to subsequent release incorporated camptothecin(CPT).Cell experiments show that the HBP(OEG-IB)is non-toxic but can enhance the therapeutic effect of CPT thanks to the effect of the protonated tertiary amino groups.The demonstration made in this work can enrich the design of responsive HBPs and can be readily applied to other systems with tunable responsive properties and functions. | Xuan Zhang Jushan Gao Xiaoye Zhao Zhaotie Liu Zhongwen Liu Ke Wang Guo Li Jinqiang Jiang | 2020 | Chinese Chemical Letters2020，31，7： | 2 |
| 3 | Tests for Skewness Kurtosis and Normality for Time Series Data显示文摘 | Jushan Bai | 2005 | Journal of Business&EconomicStatistics2005，，1： | 1 |
| 4 | Determining the Number of Primitive Shocks in Factor Models 显示文摘 | Jushan Bai Serena Ng | 2007 | Journal of Business and Economic Statistics2007，，1： | 1 |
| 5 | Least Squares Estimation of a Shift in Linear Process显示文摘 | Bai Jushan | 1994 | Journal of Time Series Analysis1994，15，： | 1 |
| 6 | Least Squares Estimation of a Shift in Linear Processes显示文摘 | Bai Jushan | 1994 | Journal of Time Series Analysis 19941994，4，： | 1 |
| 7 | Estimating and Testing Linear Models with Multiple Structural Changes显示文摘 | Bai B Y Jushan Pierre Perron | 1998 | Econometrica1998，66，1： | 1 |
| 8 | Computation and Analysis of Multiple Structural Change Models显示文摘 | Bai Jushan Pierre P | 2003 | Journal of Applied Econometrics2003，18，1： | 1 |
| 9 | Evaluating latent and observed factors in macroeconomics and finance显示文摘 | Jushan Bai Serena Ng | 2005 | Journal of Econometrics2005，，1： | 1 |
| 10 | Determining the Number of Factors in Approximate Factor Models显示文摘 | Jushan Bai Serena Ng | 2002 | Economaetrica2002，70，1： | 1 |
| 11 | Estimating and Testing Linear Models with Multiple Structural Changes显示文摘 | Jushan Bai Pierre Perron | 1998 | Econometrica1998，66，1： | 1 |
| 12 | A panic attack on unit roots and cointegration 显示文摘 | Jushan Bai Serena Ng | 2004 | Econometrica2004，72，4： | 1 |
| 13 | Determining the number of factors in approximate factor models 显示文摘 | Jushan Bai Serena Ng | 2002 | Econo- metrica2002，70，1： | 1 |
| 14 | Determine the number of factors in approximate factor models显示文摘 | Bai Jushan Serena Ng | 2002 | Econometrica2002，70，： | 1 |
| 15 | Panel data models with interactive fixed effects显示文摘 | Bai Jushan | 2009 | Econometrica2009，77，4： | 1 |
| 16 | A Note on the Hiemstra-Jones Test for Granger Non-causality显示文摘 | Jushan Ba Valentyn Panchenko | 2005 | Studies in Nonlinear Dynamics & Econometrics2005，9，2： | 1 |
| 17 | Least absolute deviation estimation of a shift 显示文摘 | Bai Jushan | 1995 | Econometric Theory1995，11，3： | 1 |
| 18 | Estimation of multiple-regime regressions with least absolutes deviation 显示文摘 | Bai Jushan | 1998 | Journal of Statistical Plan- ning and Inference1998，74，1： | 1 |
| 19 | Computation and analysis of multiple structural change model显示文摘 | BAI Jushan Perron P | 2003 | Journal of Applied Econometrics2003，18，1： | 1 |
| 20 | The relative and combined effects of herbivore assemblage and soil nitrogen on plant diversity显示文摘Plant diversity can be affected by both herbivore grazing and soil resources. However, it is unclear if the joint effects of herbivores and soil resources might vary with components of plant diversity. Here, we evaluated the relative and combined effects of herbivore assemblage and soil nitrogen(N) quantity and heterogeneity on the α and β components of plant diversity in a grassland that was subjected to four years of grazing under differing herbivore assemblages(no grazing, cattle grazing, sheep grazing, and mixed grazing). We found that herbivore assemblage combined with soil N quantity explained 41% of the variation in plant α-diversity, while herbivore assemblage combined with soil N heterogeneity explained 15% of the variation in plant β-diversity. The independent effects of herbivore assemblage explained more than those of soil N for both α-and β-diversity(α-diversity: 12% vs. 4%;β-diversity: 18% vs. 16%). We concluded that the effects of herbivores are stronger than those of soil N,and that grazing-induced changes in soil resources are important drivers of plant diversity change, especially α-diversity.Therefore, we suggest that managing herbivore species by accounting for the effects that their grazing can have on soil resources may be significant for plant diversity maintenance. | Minna Zhang Bai Liu Guangyin Li Yingying Kuang Xiuquan Yue Shicheng Jiang Jushan Liu Ling Wang | 2022 | Science China(Life Sciences)2022，65，4： | 1 |
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