|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The variation in soil moisture and the appropriate groundwater table for desert riparian forest along the Lower Tarim River显示文摘基于在五年监视更低的 Tarim 河收集的数据,我们由使用变化(Cv ) 的系数的方法分析了土壤潮湿内容(SMC ) 和在 SMC,地下水表格深度(GWD ) 和植被之间的关系的可变性,皮尔森关联和回归。SMC 的可变性的结果显示它随 060 厘米的土壤层的土壤层 SMC 的深度的增加升起了与在在可变性显示出重要增加的 100260 厘米的土壤层的 SMC 相比是相对小的。SMC 和 GWD 在生态的水消遣在 Yingsu 横断和它水路的附近的地点展出了重要差别前后,特别在 100260 厘米的土壤层的 SMC 与 GWD 的重要上升显著地增加了并且在大约 4 m 的 GWD 到达了最大的价值。显著地随 100260 厘米的土壤层的 SMC 的增加改进的植物范围和种类差异,他们俩接近了最大的价值,当 SMC 是时, 92.3% 主要植物种类能成长 >10% 。沿着更低的 Tarim 河恢复荒芜的河边的森林的生态系统, GWD 必须被维持在 < 在水路并且在为这个干旱区域的其余部分的大约 4 m 的附近的 4 m。 | MA Xiaodong CHEN Yaning ZHU Chenggang LI Weihong | 2011 | Journal of Geographical Sciences2011，21，1： | 23 |
| 2 | IL-17 response mediates acute lung injury induced by the 2009 Pandemic Influenza A (HIN1) Virus显示文摘 | Chenggang Li Penghui Yang Yang Sun Taisheng Li Chen Wang Zhong Wang Zhen Zou Yiwu Yan Wei Wang Chen Wang Zhongwei Chen Li Xing Chong Tang Xiangwu Ju Feng Guo Jiejie Deng Yan Zhao Peng Yang Jun Tang Huanling Wang Zhongpeng Zhao Zhinan Yin Bin Cao Xiliang Wang Chengyu Jiang | 2012 | Cell Research2012，22，3： | 22 |
| 3 | Monitoring the impact of climate change and human activities on grassland vegetation dynamics in the northeastern Qinghai-Tibet Plateau of China during 2000–2015显示文摘Climate change and human activities can influence vegetation net primary productivity(NPP), a key component of natural ecosystems. The Qinghai-Tibet Plateau of China, in spite of its significant natural and cultural values, is one of the most susceptible regions to climate change and human disturbances in the world. To assess the impact of climate change and human activities on vegetation dynamics in the grassland ecosystems of the northeastern Qinghai-Tibet Plateau, we applied a time-series trend analysis to normalized difference vegetation index(NDVI) datasets from 2000 to 2015 and compared these spatiotemporal variations with trends in climatic variables over the same time period. The constrained ordination approach(redundancy analysis) was used to determine which climatic variables or human-related factors mostly influenced the variation of NDVI. Furthermore, in order to determine whether current conservation measures and programs are effective in ecological protection and reconstruction, we divided the northeastern Qinghai-Tibet Plateau into two parts: the Three-River Headwater conservation area(TRH zone) in the south and the non-conservation area(NTRH zone) in the north. The results indicated an overall(73.32%) increasing trend of vegetation NPP in grasslands throughout the study area. During the period 2000–2015, NDVI in the TRH and NTRH zones increased at the rates of 0.0015/a and 0.0020/a, respectively. Specifically, precipitation accounted for 9.2% of the total variation in NDVI, while temperature accounted for 13.4%. In addition, variation in vegetation NPP of grasslands responded not only to long-and short-term changes in climate, as conceptualized in non-equilibrium theory, but also to the impact of human activities and their associated perturbations. The redundancy analysis successfully separated the relative contributions of climate change and human activities, of which village population and agricultural gross domestic product were the two most important contributors to the NDVI changes, explaining 17.8% and 17.1% of the total variation of NDVI(with the total contribution >30.0%), respectively. The total contribution percentages of climate change and human activities to the NDVI variation were 27.5% and 34.9%, respectively, in the northeastern Qinghai-Tibet Plateau. Finally, our study shows that the grassland restoration in the study area was enhanced by protection measures and programs in the TRH zone, which explained 7.6% of the total variation in NDVI. | XIONG Qinli XIAO Yang Marwa Waseem A HALMY Mohammed A DAKHIL LIANG Pinghan LIU Chenggang ZHANG Lin Bikram PANDEY PAN Kaiwen Sameh B EL KAFRAWAY CHEN Jun | 2019 | Journal of Arid Land2019，11，5： | 10 |
| 4 | Estimation of net primary productivity and its driving factors in the Ili River Valley,China显示文摘Net primary productivity(NPP), as an important variable and ecological indicator in grassland ecosystems, can reflect environmental change and the carbon budget level. The Ili River Valley is a wetland nestled in the hinterland of the Eurasian continent, which responds sensitively to the global climate change. Understanding carbon budget and their responses to climate change in the ecosystem of Ili River Valley has a significant effect on the adaptability of future climate change and sustainable development. In this study, we calculated the NPP and analyzed its spatio-temporal pattern of the Ili River Valley during the period 2000–2014 using the normalized difference vegetation index(NDVI) and an improved Carnegie-Ames-Stanford(CASA) model. Results indicate that validation showed a good performance of CASA over the study region, with an overall coefficient of determination(R2) of 0.65 and root mean square error(RMSE) of 20.86 g C/(m^2·a). Temporally, annual NPP of the Ili River Valley was 599.19 g C/(m^2·a) and showed a decreasing trend from 2000 to 2014, with an annual decrease rate of –3.51 g C/(m^2·a). However, the spatial variation was not consistent, in which 55.69% of the areas showed a decreasing tendency, 12.60% of the areas remained relatively stable and 31.71% appeared an increasing tendency. In addition, the decreasing trends in NPP were not continuous throughout the 15-year period, which was likely being caused by a shift in climate conditions. Precipitation was found to be the dominant climatic factor that controlled the inter-annual variability in NPP. Furthermore, the correlations between NPP and climate factors differed along the vertical zonal. In the medium-high altitudes of the Ili River Valley, the NPP was positively correlated to precipitation and negatively correlated to temperature and net radiation. In the low-altitude valley and high-altitude mountain areas, the NPP showed a negative correlation with precipitation and a weakly positive correlation with temperature and net radiation. The results suggested that the vegetation of the Ili River Valley degraded in recent years, and there was a more complex mechanism of local hydrothermal redistribution that controlled the growth of vegetation in this valley ecosystem. | JIAO Wei CHEN Yaning LI Weihong ZHU Chenggang LI Zhi | 2018 | Journal of Arid Land2018，10，5： | 9 |
| 5 | Spatial Variability of Soil Carbon to Nitrogen Ratio and Its Driving Factors in Ili River Valley,Xinjiang,Northwest China显示文摘Soil carbon to nitrogen(C/N) ratio is one of the most important variables reflecting soil quality and ecological function,and an indicator for assessing carbon and nitrogen nutrition balance of soils.Its variation reflects the carbon and nitrogen cycling of soils.In order to explore the spatial variability of soil C/N ratio and its controlling factors of the Ili River valley in Xinjiang Uygur Autonomous Region,Northwest China,the traditional statistical methods,including correlation analysis,geostatistic alanalys and multiple regression analysis were used.The statistical results showed that the soil C/N ratio varied from 7.00 to 23.11,with a mean value of 10.92,and the coefficient of variation was 31.3%.Correlation analysis showed that longitude,altitude,precipitation,soil water,organic carbon,and total nitrogen were positively correlated with the soil C/N ratio(P < 0.01),whereas negative correlations were found between the soil C/N ratio and latitude,temperature,soil bulk density and soil p H.Ordinary Cokriging interpolation showed that r and ME were 0.73 and 0.57,respectively,indicating that the prediction accuracy was high.The spatial autocorrelation of the soil C/N ratio was 6.4 km,and the nugget effect of the soil C/N ratio was 10% with a patchy distribution,in which the area with high value(12.00–20.41) accounted for 22.6% of the total area.Land uses changed the soil C/N ratio with the order of cultivated land > grass land > forest land > garden.Multiple regression analysis showed that geographical and climatic factors,and soil physical and chemical properties could independently explain 26.8%and 55.4% of the spatial features of soil C/N ratio,while human activities could independently explain 5.4% of the spatial features only.The spatial distribution of soil C/N ratio in the study has important reference value for managing soil carbon and nitrogen,and for improving ecological function to similar regions. | SUN Guojun LI Weihong ZHU Chenggang CHEN Yaning | 2017 | Chinese Geographical Science2017，27，4： | 4 |
| 6 | Measuring boundary-layer height under clear and cloudy conditions using three instruments显示文摘 | Chenggang Wang Hongrong Shi Lianji Jin Hongbin Chen Huayang Wen | 2016 | Particuology2016，14，5： | 2 |
| 7 | Health Status and Earnings of Migrant Workers from Rural China显示文摘进为雇用的城市的农村劳动者的迁居是中国在过去的三十年的经济生长的主要驱动力之一。基于中国的农业的部从 2003 ~ 2007 收集的数据集,这份报纸在从事要求好健康的身体上集中的工作的候鸟工人的收入上检验健康的影响。我们的调查结果显示那差的健康地位不仅削弱农村劳动者的刺激参予候鸟劳动力量而且显著地减少他们的收入。处于差的健康的一个候鸟工人仅仅挣一个健康工人做的中的 67% 个。在所有人的大写的特征和家庭经济因素之中,健康地位在为更少的教育工人的收入上是最有影响的。劳动生产率比一个人工作的天的年度数字在收入上有更大的影响。针对对农村劳动者可得到的保健服务的改进的进行中的保健改革被催促帮助在农村中国减少贫穷。 | Lijian Qin Chien-Ping Chen Xun Liu Chenggang Wang Zhongyi Jiang | 2015 | China & World Economy2015，23，2： | 2 |
| 8 | Combination of ARTP mutagenesis and color-mediated highthroughput screening to enhance 1-naphthol yield from microbial oxidation of naphthalene in aqueous system显示文摘Strain QCG of the aerobic bacteria Bacillus cereus is capable of producing l-naphthol from naphtha-lene,this strain was first isolated and characterized in this study.Strain QCG was mutagenized to enhance l-naphthol production,using atmospheric and room temperature plasma(ARTP)technology.Then,a microbial clone screening system was used to accelerate the operation.Meanwhile,a novel color-mediated high-throughput screening using 4-aminoantipyrine was performed to screen mutants.The optimal mutant strain QCG4 produced 19.58土0.34 mg·L-1-naphthol from naphthalene that was 47.32%higher than that of the original strain(13.29+0.28 mg·L-1).In addition,the optimal conditions for l-naphthol production via whole-cell catalysis of strain QCG4 were determined to be an OD600 of40,150 mg.L I naphthalene,and 7.5%dimethyl formamide as a co-solvent at pH 7.5 and 26℃ for 3 h,resulting in 41.18士0.12 mg·L-l-naphthol,i.e.,the mutant strain produces a 2.1-fold higher yield compared to the original strain. | Chenggang Qiu Alei Zhang Sha Tao Kang Li Kequan Chen Pingkai Ouyang | 2020 | Frontiers of Chemical Science and Engineering2020，14，5： | 2 |
| 9 | Generation of two transgenic amphioxus lines using the Tol2 transposon system显示文摘Amphioxus or lancelets are regarded as a promising model animals for studying developmental mechanisms in chordates, and the evolution of vertebrate characters, because of their important phylogenetic position and their genomic and anatomical simplicity(Bertrand and Escriva, 2011; Holland and Yu, 2004). Although several recent advances have made amphioxus more tractable | Chenggang Shi Jing Huang Shixi Chen Guang Li Yiquan Wang | 2018 | Journal of Genetics and Genomics2018，45，9： | 2 |
| 10 | The effect of laser wavelength on the formation of surface-microstructured silicon显示文摘 | Peng Yan Chen Hongyan Zhu Chenggang | 2012 | Materials Letters2012，83，127： | 1 |
| 11 | Fifty-year climate change and its effect on annual runoff in the Tarim River Basin, China显示文摘 | Chen Yaning Xu Changchun Hao Xingming Li Weihong Chen Yapeng Zhu Chenggang Ye Zhaoxia | 2008 | Quaternary International2008，，1： | 1 |
| 12 | Fully exfoliated layeredsilicate epoxy nanocomposites 显示文摘 | Chen Chenggang Tolle Tia Benson | 2004 | Journal of Polymer SciencePartB : polymer Physics2004，42，21： | 1 |
| 13 | 显示文摘 | Chen Shaoling Xu Chenggang Zhao Keqing | 2000 | Journal of Sichuan Normal University (Nature Science)2000，23，： | 1 |
| 14 | Mild processing and characterization of silica epoxy hybrid nanocomposite显示文摘 | Chenggang Chen Alexander B Morgan | 2009 | Polymer2009，50，： | 1 |
| 15 | Dicofol application resulted in high DDTs residue in cotton fields from northern Jiangsu province, China显示文摘 | Xinglun Yang Shisheng Wang Yongrong Bian Feng Chen Guifen Yu Chenggang Gu Xin Jiang | 2007 | Journal of Hazardous Materials2007，，1： | 1 |
| 16 | Assessing glomerular filtration rate (GFR) in elderly Chinese patients with chronic kidney disease (CKD): A comparison of various predictive equations显示文摘 | Liu Xun Wang Cheng Tang Hua Shi Chenggang Chen Zhujiang Ye Zengchun Lou Tanqi | 2009 | Archives of Gerontology and Geriatrics2009，，1： | 1 |
| 17 | Alignment measurement of two-dimensional zero-reference marks显示文摘 | Wang Yingnan Chen Yuhang | 2006 | Precision Engineering2006，30，： | 1 |
| 18 | Epoxy layered--silicate nanocomposites 显示文摘 | CHEN CHENGGANG KHOBAIB MOHAMMAD CURLISS DAVID | 2003 | Progress in Organic Coatings2003，47，： | 1 |
| 19 | Carbon fiber composites:organoclay-aerospace epoxy nanocomposites,part I显示文摘 | RICE BRIAN P CHENGGANG CHEN LARRY CLOOS | 2001 | SAMPE Journal2001，37，5： | 1 |
| 20 | Highly dispersed nanosilica–epoxy resins with enhanced mechanical properties显示文摘 | Chenggang Chen Ryan S. Justice Dale W. Schaefer Jeffery W. Baur | 2008 | Polymer2008，，17： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员