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| 1 | Effects of Elevated CO_2 and Drought on Plant Physiology, Soil Carbon and Soil Enzyme Activities显示文摘Global climate models have indicated high probability of drought occurrences in the coming future decades due to the impacts of climate change caused by a mass release of CO_2. Thus, climate change regarding elevated ambient CO_2 and drought may consequently affect the growth of crops. In this study, plant physiology, soil carbon, and soil enzyme activities were measured to investigate the impacts of elevated CO_2 and drought stress on a Stagnic Anthrosol planted with soybean(Glycine max). Treatments of two CO_2 levels, three soil moisture levels, and two soil cover types were established. The results indicated that elevated CO_2 and drought stress significantly affected plant physiology. The inhibition of plant physiology by drought stress was mediated via prompted photosynthesis and water use efficiency under elevated CO_2 conditions. Elevated CO_2 resulted in a longer retention time of dissolved organic carbon(DOC) in soil, probably by improving the soil water effectiveness for organic decomposition and mineralization. Drought stress significantly decreased C:N ratio and microbial biomass carbon(MBC), but the interactive effects of drought stress and CO_2 on them were not significant. Elevated CO_2 induced an increase in invertase and catalase activities through stimulated plant root exudation.These results suggested that drought stress had significant negative impacts on plant physiology, soil carbon, and soil enzyme activities,whereas elevated CO_2 and plant physiological feedbacks indirectly ameliorated these impacts. | WANG Yuhui YAN Denghua WANG Junfeng DING Yi SONG Xinshan | 2017 | Pedosphere2017，27，5： | 5 |
| 2 | Modeling on Residence Time Distribution in Subsurface Flow Constructed Wetlands by Multi Flow Dispersion Model显示文摘As an important design factor for constructed wetlands,hydraulic retention time and its distribution will affect the treatment performance.Instantaneously injected sodium chloride tracers were used to obtain residence time distributions of the lab scale subsurface flow constructed wetland.Considering the presence of trailing and multiple peaks of the tracer breakthrough curve,the multi flow dispersion model(MFDM)was used to fit the experimental tracer breakthrough curves.According to the residual sum of squares and comparison between the experimental values and simulated values of the tracer concentration,MFDM could fit the residence time distribution(RTD)curve satisfactorily,the results of which also reflected the layered structure of wetland cells,thus to give reference for application of MFDM to the same kind of subsurface flow constructed wetlands. | ZHANG Tao SONG Xinshan LU Shoubo YAN Denghua | 2010 | 湿地科学2010，8，3： | 2 |
| 3 | The impact of influent mode on nitrogen removal in horizontal subsurface flow constructed wetlands: A simple analysis of hydraulic efficiency and nutrient distribution显示文摘 | Yuhui Wang Xinshan Song Yi Ding Ruihua Niu Xiaoxiang Zhao Denghua Yan | 2013 | Ecological Engineering2013，，： | 1 |
| 4 | Effects of dissolved oxygen and influent COD/N ratios on nitrogen removal in horizontal subsurface flow constructed wetland显示文摘 | Yi Ding Xinshan Song Yuhui Wang Denghua Yan | 2012 | Ecological Engineering2012，，： | 1 |
| 5 | The impact of influent mode on nitrogen removal in horizontal subsurface flow constructed wetlands:a simple analysis of hydraulic efficiency and nutrient distribution 显示文摘 | WANG Yuhui SONG Xinshan DING Yi | 2013 | Ecological Engineering2013，60，8： | 1 |
| 6 | Effects of dissolved oxy- gen and influent COD/N ratios on nitrogen removal in horizontal sub- surface flow constructed wetland 显示文摘 | Ding Yi Song Xinshan Wang Yuhui | 2012 | Ecological Engineering2012，46，1： | 1 |
| 7 | Performance of laboratory-seale constructed wetlands coupled with micro-electric field for heavy metal-contaminating wastewater treatment 显示文摘 | SONG Xinshan YAN Denghua LIU Zhenhong | 2011 | Ecological Engineering2011，37，12： | 1 |
| 8 | The impact of influent mode on nitrogen removal in horizontal subsurface flow constructed wetlands: A simple analysis of hydraulic efficiency and nutrient distribution显示文摘 | Yuhui Wang Xinshan Song Yi Ding | 2013 | Ecological Engineering2013，60，： | 1 |
| 9 | Nitrate removal to its fate in wetland mesocosm filled with sponge iron:Impact of influent COD/N ratio显示文摘Sponge iron(s-Fe°)is a porous metal with the potential to be an electron donor for denitrification.This study aims to evaluate the feasibility of using s-Fe as the substrate of wetland mesocosms.Here,wetland mesocosms with the addition of s-Fe'particles(CW-Fc)and a blank control group(CW-CK)were established.The NOj-N reduction property and water quality parameters(pH.DO.and ORP)were examined at three COD/N ratios(0.5.and 10).Results showed that the NO3--N removal efficiencies were significantly increased by 6.6 to 58.9%in the presence of s-Fe NH4+-N was mainly produced by chemical denitrification,and approximately 50% of the NO3--N was reduced to N4+-N,at the COD ratio of 0.An increase of the influent COD/N ratio resulted in lower chemical denitrification and higher bio-dcnitrification.Although chemical denitrification mediated by s-Fe led to an accumulation of NH4+-N at COD/N ratios of 0 and 5.the TIN removal efficiencies increased by 4.5#12.4#.Moreover,the effluent pll,DO.and ORP values showed a significant negative correlation with total Fe and Fe(II)(P<0.01).High-throughput sequencing analysis indicated that Trichococctis(77.2%)was the most abundant microorganism in the CW-Fc mcsocosm,while Thauera,Zoogloea.and Herbaspirillum were the primary denitrifying bacteria.The denitrifiers,Simplicispira,IXxhloronwnas,and Denirratisoma.were the dominant bacteria for CW-CK.This study provides a valuable method and an improved understanding of NOj-N reduction characteristics of s-Fc in a wetland mcsocosm. | Zhihao Si Xinshan Song Xin Cao Yuhui Wang Yifei Wang Yufeng Zhao Xiaoyan Ge Awet Arefe Tesfahunegn | 2020 | Frontiers of Environmental Science & Engineering2020，14，1： | 1 |
| 10 | Effects of dissolved oxy- gen and influent COD/N ratios on nitrogen removal in horizontal su- bsurface flow constructed wetland显示文摘 | Ding Yi Song Xinshan Wang Yuhui | 2012 | Ecological Engineering2012，46，1： | 1 |
| 11 | Effect of supplying a carbon extracting solution on denitrification in horizontal subsurface flow constructed wetland显示文摘 | Ding Yi Song Xinshan Wang Yuhui | 2013 | Korean Journal of Chemical Enginee- ring2013，30，2： | 1 |
| 12 | Trickling filter in a biocathode microbial fuel cell for efficient wastewater treatment and energy production显示文摘Aiming to reduce the energy input, oxygen supply by trickling filter was employed in a biocathode microbial fuel cell(MFC) to examine its performance of electricity production and sewage treatment. During batch operation, trickling MFC(TMFC) could start and aerate effectively(DO>3.60 mg/L). During continuous operation, TMFC produced a maximum current density of 71.8 A/m^3 and maximum power density of 26.2 W/m^3 under the hydraulic retention time(HRT) of 10 h. By increasing the HRT to 15 h, 90.6% of COD and 99.0% of ammonia in simulated domestic sewage were efficiently removed and the maximum power density was 19.4 W/m^3. Continuous purification of real municipal wastewater achieved 85.9% of COD removal rate and 91.6%of ammonia removal rate. Sequencing result of biocathodic microorganisms indicated that it consisted of four major classes and the dominant class was γ-proteobacteria, which accounted for up to 84.38%. The dominant genus was Acinetobacter, which accounted for 57.81%. The phylogenetic tree showed different relationships among the 19 species of biocathode microorganisms and the predominant species was Acinetobacter calcoaceticus. | CAO Xin LIANG Peng SONG XinShan WANG YuHui Qiu Yong HUANG Xia | 2019 | Science China(Technological Sciences)2019，62，10： | 0 |
| 13 | A targeted QTL analysis for fiber length using a genetic population between two introgressed backcrossed inbred lines in upland cotton(Gossypium hirsutum)显示文摘Cotton fiber is the most important natural raw material for the textile industry, and fiber length(FL) is one of the most important traits in cotton.Quantitative trait locus(QTL)mapping based on high-density genetic maps is an efficient approach to identify genetic regions for FL.In our study, two backcrossed inbred lines(BILs) were chosen as parents to construct a high-density genetic map in F2 which was used to fine map FL QTL in F2:3 population.The genetic map had a total size of 3462.8 cM, containing 9182 singlenucleotide polymorphisms(SNPs) based on genotyping-by-sequencing.Two FL related stable QTL were identified on two chromosomes(qFL-A08–1 on A08 and qFL-D03–1 on D03),and qFL-A08–1 was confirmed by a meta-analysis.Utilizing previously obtained RNA-seq data for the two BILs and qRT-PCR analysis, two candidate genes annotated as cytochrome b5(CB5, Gh_A08 G1729) and microtubule end-binding 1 C(EB1C, Gh_D03 G0232) that may regulate FL during the fiber elongation stage were identified.In addition, nine recombination hotspots in this population were found.The results of this study will provide an important foundation for further studies on the molecular and genetic regulation of fiber elongation. | Guoyuan Liua Wenfeng Pei Dan Li Jianjiang Ma Yupeng Cui Nuohan Wang Jikun Song Man Wu Libei Li Xinshan Zang Shuxun Yu Jinfa Zhang Jiwen Yu | 2019 | The Crop Journal2019，7，3： | 0 |
| 14 | Genome-wide association study of micronaire using a natural population of representative upland cotton(Gossypium hirsutum L.)显示文摘Background: Micronaire is a comprehensive index reflecting the fineness and maturity of cotton fiber.Micronaire is one of the important internal quality indicators of the cotton fiber and is closely related to the value of the cotton fiber.Understanding the genetic basis of micronaire is required for the genetic improvement of the trait.However,the genetic architecture of micronaire at the genomic level is unclear.The present genome-wide association study(GWAS)aimed to identify the genetic mechanism of the micronaire trait in 83 representa:tive upland cotton lines grown in multiple environments.Results GWAS of micronaire used 83 upland cotton accessions assayed by a Cotton 63 K Illumina Infinium single nucleotide polymorphism(SNP)array.A total of 11 quantitative trait loci(QTLs)for micronaire were detected on 10 chromosomes.These 11 QTLs included 27 identified genes with specific expression patterns.A novel QTL,qFM-A12–1,included 12 significant SNPs,and GhFLA9 was identified as a candidate gene based on haplotype block analysis and on strong and direct linkage disequilibrium between the significantly related SNPs and gene.GhFLA9 was expressed at a high level during secondary wall thickening at 20∼25 days post-anthesis.The expression level of GhFLA9 was significantly higher in the low micronaire line(Msco-12)than that in the high micronaire line(Chuangyou-9).Conclusions: This study provides a genetic reference for genetic improvement of cotton fiber micronaire and a foundation for verification of the functions of GhFLA9. | SONG Jikun PEI Wenfeng MA Jianjiang YANG Shuxian JIA Bing BIAN Yingying XIN Yue WU Luyao ZANG Xinshan QU Yanying ZHANG Jinfa WU Man YU Jiwen | 2021 | Journal of Cotton Research2021，4，2： | 0 |
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