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Soil metabolomics:Deciphering underground metabolic webs in terrestrial ecosystems

Eco-environment & Health 2024年第2期3卷 227-237页

作者： Yang Song shi Yao Xiaona li Tao Wang Xin Jiang Nanthi Bolan Charles R.Warren Trent R.Northen Scott X.Chang State Key Laboratory of Soil and Sustainable agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China university of Chinese Academy of Sciences Beijing 100049China School of environment and Ecology Jiangnan UniversityWuxi 225127China institute of Mountain Hazards and environment Chinese Academy of SciencesChengdu 610299China School of agriculture and environment The University of Western AustraliaNedlandWA-6009Australia The UWA institute of agriculture The University of Western AustraliaNedlandWA-6009Australia Healthy environments and lives(HEAL)National Research Network Australia School of life and environmental Sciences University of SydneyHeydon-Laurence Building A08NSW 2006Australia environmental Genomics and System Biology Division Lawrence Berkeley National Laboratory1 Cyclotron RdBerkeleyCA 94720USA Joint Genome institute Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Renewable resources University of AlbertaEdmontonAlberta T6G 2E3Canada

Soil metabolomics is an emerging approach for profiling diverse small molecule metabolites,i.e.,metabolomes,in the *** metabolites,including fatty acids,amino acids,lipids,organic acids,sugars,and volatile organic compounds,often contain essential nutrients such as nitrogen,phosphorus,and sulfur and are directly linked to soil biogeochemical cycles driven by soil *** paper presents an overview of methods for analyzing soil metabolites and the state-of-the-art of soil metabolomics in relation to soil nutrient *** describe important applications of metabolomics in studying soil carbon cycling and sequestration,and the response of soil organic pools to changing environmental *** includes using metabolomics to provide new insights into the close relationships between soil microbiome and metabolome,as well as responses of soil metabolome to plant and environmental stresses such as soil *** also highlight the advantage of using soil metabolomics to study the biogeochemical cycles of elements and suggest that future research needs to better understand factors driving soil function and health.

关键词： Dissolved organic matter Carbon cycling Metabolomes Extraction method Soil microbiome Rhizosphere ecology

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Influence of long-term different fertilization on soil weed seed bank diversity of a paddy soil under rice/rape rotation

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Frontiers in Biology 2008年第3期3卷 320-327页

作者： Wei FENG genxing pan Sheng QIANG Ruhai li Jiguang WEI institute of resource ecosystem and environment of agriculture Nanjing Agricultural UniversityNanjing 210095China Weed Research Laboratory Nanjing Agricultural UniversityNanjing 210095China Anhui Academy of Forestry Hefei 230031China

A long-term fertilized paddy field under rice/rape rotation in the Taihu Lake Region was selected to investigate the dynamics of soil weed seed *** fertilizer treatments were performed,including non-fertilizer(NF),chemical fertilizer only(CF),chemical fertilizer combined with pig manure(CMF)and chemical fertilizer plus crop stalk(CSF).We recorded the seed numbers and crop yields,estimated the weed seed bank density and identified the kinds of weed seeds in the top-soil(0-15 cm)in the study area using a *** on the records,we analyzed the effect of long-term fertilization on soil weed seed bank diversity and the rela-tionship between weed seed diversity and crop *** the four treatments,it was found that in the cultivating seasons of both rice and rape,the density of soil weed seed bank was the lowest with the treatment of chemical fertilizer plus crop ***,the total number of species and the weed seed bank diversity was the ***,the crop yields were at maximum and kept constant with this *** was a definite correlation between fertilizer treatment and soil weed seed bank diversity and crop *** was concluded that balancing the fertilizer management was helpful in main-taining soil weed seed bank diversity,increasing crop yields and alleviating crop yield ***,among the four fertilizer treatments,chemical fertilizer plus rice crop stalk treatment was the best one to stimulate the productivity of agricultural ecosystems and simulta-neously protect biodiversity.

关键词： soil weed seed bank rice/rape rotation biodiversity fertilizer treatment

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Improving model performance in mapping cropland soil organic matter using time-series remote sensing data

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Journal of Integrative agriculture 2024年第8期23卷 2820-2841页

作者： Xianglin Zhang Jie Xue Songchao Chen Zhiqing Zhuo Zheng Wang Xueyao Chen Yi Xiao Zhou shi institute of Applied Remote Sensing and Information Technology College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Department of Land Management Zhejiang UniversityHangzhou 310058China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China institute of Digital agriculture Zhejiang Academy of Agricultural SciencesHangzhou 310021China Key Laboratory of Spectroscopy Sensing Ministry of Agriculture and Rural AffairsHangzhou 310058China

Faced with increasing global soil degradation,spatially explicit data on cropland soil organic matter(SOM)provides crucial data for soil carbon pool accounting,cropland quality assessment and the formulation of effective management *** a spatial information prediction technique,digital soil mapping(DSM)has been widely used to spatially map soil information at different ***,the accuracy of digital SOM maps for cropland is typically lower than for other land cover types due to the inherent difficulty in precisely quantifying human *** overcome this limitation,this study systematically assessed a framework of“information extractionfeature selection-model averaging”for improving model performance in mapping cropland SOM using 462 cropland soil samples collected in Guangzhou,china.in *** results showed that using the framework of dynamic information extraction,feature selection and model averaging could efficiently improve the accuracy of the final predictions(R^(2):0.48 to 0.53)without having obviously negative impacts on *** the dynamic information of the environment was an efficient way to generate covariates that are linearly and nonlinearly related to SOM,which improved the R^(2)of random forest from 0.44 to 0.48 and the R^(2)of extreme gradient boosting from 0.37to *** recursive feature selection(FRFS)is recommended when there are relatively few environmental covariates(environmental covariates(>500).The Granger-Ramanathan model averaging approach could improve the prediction accuracy and average *** the structures of initial prediction models are similar,increasing in the number of averaging models did not have significantly positive effects on the final *** the advantages of these selected strategies over information extraction,feature selection and model averaging have a great potential for high-accuracy soil mapping

关键词： cropland soil organic matter digital soil mapping machine learning feature selection model averaging

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Instrumental and bioanalytical measures of endocrine disrupting compounds and activities associated with sediments from Taihu lake

Instrumental and bioanalytical measures of endocrine disrupt...

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持久性有机污染物论坛2009暨第四届持久性有机污染物全国学术研讨会

作者： Wei shi~1,Zheng Feng~1,Fu Cao~1,Hong Sun~2,Hongling liu~1,Xinru Wang~2,Hongxia Yu~1 (1 The State Key Laboratory of Pollution Control and resource Reuse,School of the environment, nanjing university,nanjing 210093,P.R.china.2 Key Laboratory of Reproductive Medicine,institute of Toxicology,nanjing Medical university)

*** Taihu Lake,the third largest freshwater lake in china.is known to be the main source of drinking-water and agriculture ***,cyanobacteria blooms have become a severe problem in this large shallow eutrophic lake,and...

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Contrasting response of rice rhizosphere microbiomes to in situ cadmium-contaminated soil remediation

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Soil Ecology Letters 2024年第2期6卷 149-162页

作者： Zhongyi Cheng Qinyu Han Yan He Jiachun shi Laosheng Wu Jianming Xu Zhejiang Provincial Key Laboratory of agricultural resources and environment Institute of Soil and Water Resources and Environmental ScienceCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou310058China Key Laboratory of environment Remediation and Ecological Health Ministry of EducationHangzhou310058China Department of environmental Sciences University of CaliforniaRiversideCA92521USA

Changes in soil properties and microbial communities regulated rhizosphere protistan assemblages. • Bacterial community was more sensitive to soil amendments than protists and fungi. • Soil amendments trigger the role of specific protistan taxa Cercozoa on microbial interactions. Understanding the responses of different rhizosphere microbial lineages to soil amendments during in situ remediation of Cd-contaminated soil is of great importance in the assessment of the restoration and crop health. Here, we evaluated the effects of lime (LM), biochar (BC), pig manure (PM), and a commercial Mg-Ca-Si conditioner (CMC) on the rice rhizosphere soil physicochemical properties and community assembly of bacteria, fungi, and protists in a six-year consecutive application of soil amendments field trial. Our results indicated that among the four amendments, the BC and CMC had the best efficiency in increasing soil pH, which were 5.2% and 16.2%, respectively. Despite the differences in soil Cd concentrations is not noticeable, all the soil amendment treatments significantly decreased the proportion of available Cd in total Cd compared to the control. Soil amendments significantly altered the diversity of bacterial community, while they had no effect on fungal and protistan communities. linear discriminant analysis effect size (LEfSe) showed that the bacteria was more sensitive to soil amendment-induced changes. For protists, treatments with LM and BC changed the groups of protistan consumers, while treatments with PM and CMC significantly increased the relative abundances of protistan phototrophs. Co-occurrence network analysis revealed that soil amendments increased microbial network complexity and triggered the role of protists, especially for the predatory protists Cercozoa, on microbial trophic interactions. Further variation partitioning analysis revealed that edaphic properties, bacterial and fungal communities compositions together explained the 77% of the total variation i

关键词： cadmium soil amendments soil protist community microbial interactions

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西北酿酒葡萄物候模型优选及气候变化对物候期的影响

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农业工程学报 2024年第12期40卷 138-147页

作者：刘琰琰史学家杜宏娟徐佩瑶李芳王静张晓煜成都信息工程大学大气科学学院高原大气与环境四川省重点实验室成都610225 中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室银川750002 成都信息工程大学云南自然灾害防御技术研发中心昆明650034 吴忠市气象局吴忠751199 宁夏气象科学研究所银川750002

为预测气候变暖背景下西北地区酿酒葡萄物候期变化规律,该研究利用2007—2022年西北地区地表温度数据及酿酒葡萄(赤霞珠、黑比诺、美乐和霞多丽)物候观测数据(萌芽期、开花期和转色期),对酿酒葡萄物候模型(积温模型,包含生长日度模型(gr... 详细信息

为预测气候变暖背景下西北地区酿酒葡萄物候期变化规律,该研究利用2007—2022年西北地区地表温度数据及酿酒葡萄(赤霞珠、黑比诺、美乐和霞多丽)物候观测数据(萌芽期、开花期和转色期),对酿酒葡萄物候模型(积温模型,包含生长日度模型(growing degree day model,GDD)及葡萄开花转色期模型(grapevine flowering veraison model,GFV),BRIN模型、WE模型)进行参数优化和模拟比较,选取最适模型结合气候模式数据预测SSP245和SSP585情景下酿酒葡萄物候期的变化。结果表明:1)萌芽期,BRIN模型最适用于赤霞珠、美乐和霞多丽,GDD5模型最适于黑比诺;2)开花期,GDD10模型最适用于赤霞珠和美乐,GFV和WE模型分别适用于黑比诺和霞多丽;3)转色期,WE模型最适用于赤霞珠、黑比诺和美乐,GFV模型则最适于霞多丽;4)在SSP245情景下,西北地区2035—2065年与2055—2085年4种葡萄的3个物候期分别平均提前2 d与4 d;在SSP585情景下,西北地区2035—2065年4种葡萄的3个物候期平均提前5 d,2055—2085年除了天山北麓地区的酿酒葡萄转色期因夏季高温影响而平均延后6 d外,其他酿酒葡萄物候期平均提前10 d,进一步分析表明夏季高温是导致转色期延迟的重要因素。研究结果为适应气候变化充分利用气候资源,保障西北地区酿酒葡萄生产优势地位提供理论依据和科学支撑。

关键词：模型气候变化物候学酿酒葡萄西北地区

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黑土长缓坡地形与横垄对土壤有机碳空间分异的交互作用

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农业工程学报 2024年第3期40卷 103-113页

作者：李雪亮张晴雯李孟妮石玉龙于博威荆雪锴蒋嫄可刘国成青岛农业大学资源与环境学院青岛266109 中国农业科学院农业环境与可持续发展研究所北京100081

横坡垄作对坡耕地土壤有机碳(soil organic carbon,SOC)流失有一定的阻控作用,但黑土区特有长而缓的地形与横垄对坡耕地SOC空间分异会产生交互作用,而这种交互作用引发的SOC流失风险没引起足够的重视。该研究以典型黑土区黑龙江省黑河... 详细信息

横坡垄作对坡耕地土壤有机碳(soil organic carbon,SOC)流失有一定的阻控作用,但黑土区特有长而缓的地形与横垄对坡耕地SOC空间分异会产生交互作用,而这种交互作用引发的SOC流失风险没引起足够的重视。该研究以典型黑土区黑龙江省黑河市北安分局红星农场为研究区域,2022年在横坡垄作与顺坡水线方向上共布设25个采样点,采用地理探测器模型、单因素方差分析(one-way ANOVA)和Pearson相关性分析,探讨土壤有机碳的空间分异及其交互作用。结果表明,横坡垄作方向上垄沟土壤有机碳含量从坡顶到水线呈现逐渐增大的变化趋势;在垄台从坡顶到水线呈现先增大后减小的变化趋势。顺坡水线方向,土壤有机碳含量在垄沟呈现从上坡到下坡增大的变化趋势;在垄台呈现先增大后减小的变化趋势。由于断垄产生水线,顺坡土壤有机碳含量上坡与下坡仍有显著差异(P<0.05)。Pearson相关性分析表明,有机碳与可蚀性K因子呈显著负相关(垄沟和垄台相关系数分别为–0.228和–0.238,P<0.05),与碳循环相关的β-葡萄糖苷酶和微生物生物量碳在垄沟呈极显著正相关(相关系数为0.398和0.676,P<0.01)。地理探测器分析表明,顺坡水线对土壤有机碳空间分异的影响最大,其对垄沟和垄台SOC的解释力分别达到61%和52%以上;顺坡水线与其他因子的交互作用共同增强了对土壤有机碳的解释力,尤其是顺坡水线与高程的交互作用最为明显。黑土区坡耕地土壤有机碳空间分异主要受顺坡水线与高程的交互作用,横坡垄作虽然能够拦截径流,但由于长缓坡地形影响产生的断垄会加剧土壤侵蚀诱发的有机碳流失。因此,黑土坡耕地治理需要同时考虑横垄与地形的共同影响,从而实现防蚀的优化效果。

关键词：土壤侵蚀有机碳坡耕地横坡垄作交互作用

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Fluoro-functionalized plant biomass adsorbent:Preparation and application in extraction of trace perfluorinated compounds from environmental water samples

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Journal of environmental Sciences 2024年第3期137卷 703-715页

作者： Xi Tan Yan shi Chun-Feng Ma Quan Chi Yu-Hang Yang Wen-Xiang Zhang Hua-Ming Xiao Xian Wang Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission School of Chemistry and Materials ScienceSouth-Central Minzu UniversityWuhan 430074China School of Pharmaceutical Sciences South-Central Minzu UniversityWuhan 430074China Key Laboratory of Oilseeds Processing of Ministry of agriculture Hubei Key Laboratory of Lipid Chemistry and NutritionOil Crops Research Institute of the Chinese Academy of Agricultural SciencesWuhan 430062China

Perfuorinated compounds(PFCs)are toxic and widely present in the environment,and therefore effective adsorbents are required to remove PFCs from environmental *** the present study,a new type of fuorinated biomass materials was synthesized via an ingenious fuorosilanization *** adsorbents were applied for the adsorption of 13typical PFCs,including perfuorocarboxylic acids(PFCAs)and perfuorosulfonic acids(PFSAs).By comparing their adsorption performance,Fluorinated cedar slag(FCS)was discovered to have the best absorption efficiency and enabled highly efficient enrichment of *** adsorption recovery of FCS with the investigated PFCs is greater than 90%under the optimal adsorption *** to the high affinity of F-F sorbent-sorbate interaction,FCS had good adsorption capacities of PFCs from aqueous solution,with the maximum adsorption capacity of 15.80 mg/g for PFOS and 10.71 mg/g for PFOA,***,the adsorption time could be achieved in a short time(8 min).Using the FCS absorbent,an innovative FCS-solid phase extraction assisted with high performance liquid chromatography-electrospray-tandem mass spectrometry(FCS-SPE-HPLC-ESI-MS/MS)method was first developed to sensitively detect PFCs in the environmental water *** intra-day and inter-day recovery rates of the 13 compounds ranged from 90.7%-104.3%,with the RSD of 2.1%-4.7%(intra-day)and 2.5%-8.5%(inter-day),*** research demonstrates the potential of the newly fuoro-functionalized plant biomass to adsorb PFCs from environmental water,with the advantages of high adsorption efficiencies,high antiinterference,easy operation and low economic cost.

关键词： Fluoro-functionalized biomass Perfuorinated compounds(PFCs) Adsorption efficiency Mass spectrometry(MS) Fluorinated cedar slag(FCS)

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不同耐低铁基因型花生铁营养特性的差异

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土壤通报 2009年第6期40卷 1393-1397页

作者：高丽史衍玺周健民土壤与农业可持续发展国家重点实验室(中科院南京土壤研究所) 江苏南京210008 烟台大学海洋学院山东烟台264005 青岛农业大学资源与环境学院山东青岛266109

以不同耐低铁能力的8个花生品种为试材,研究了低铁胁迫下不同品种在各个生育期的铁养分效率差异。在苗期,耐低铁品种的铁吸收量和根效率比均大于铁敏感品种,铁吸收效率是决定品种耐低铁能力的主要因素。低铁胁迫下,耐低铁品种叶片的活... 详细信息

以不同耐低铁能力的8个花生品种为试材,研究了低铁胁迫下不同品种在各个生育期的铁养分效率差异。在苗期,耐低铁品种的铁吸收量和根效率比均大于铁敏感品种,铁吸收效率是决定品种耐低铁能力的主要因素。低铁胁迫下,耐低铁品种叶片的活性铁含量和向地上部运输铁的能力在整个生长期均明显高于铁敏感品种。铁经济利用效率比利用效率更能反映花生耐低铁能力的品种间差异。不同耐低铁花生品种的铁营养特性也有所不同,有的表现为生长前期植株对铁较高的吸收效率,有的则表现出较强的运输能力。相关分析表明,叶片活性铁和根效率比可作为花生铁养分效率高低的良好指标。

关键词：花生基因型耐低铁营养特性

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Effects of acetylene at low concentrations on nitrification, mineralization and microbial biomass nitrogen concentrations in forest soils

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Chinese Science Bulletin 2009年第2期54卷 296-303页

作者： ZHANG TengYu XU XingKai LUO XianBao HAN lin WANG YingHong pan genxing State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China institute of resource Ecosystem and Environment of Agriculture Nanjing Agricultural University Nanjing 210095 China Graduate university of Chinese Academy of Sciences Beijing 100049 China

Temperate forest surface soils at the varying distances from main trunks (e.g., Pinus koraiensis and Quercus mongolica) were used to study the effects of acetylene (C2H2) at low concentrations on nitrification, mineralization and microbial biomass N concentrations of the soils, and to assess the contribution of heterotrophic nitrification to nitrous oxide (N2O) emissions from soils. The use of acetylene at partial pressures within a range from 10 to 100 Pa C2H2 in headspace gas gave a significant decrease in N2O emission at soil moisture of c. 45% water-filled porosity space, and the decrease was almost the same in each soil after exposure of C2H2 at low concentrations. Heterotrophic nitrification could account for 21%―48% of total N2O emission from each soil; the contribution would increase with increasing distances from the Pinus koraiensis trunks rather than from the Quercus mongolica trunks. Under the experimental conditions, the use of C2H2 at low concentrations showed no significant influ- ence on soil microbial biomass N, net N mineralization and microbial respiration. However, 100 Pa C2H2 in headspace gas could reduce carbon dioxide (CO2) emissions from soils. According to the rapid consumption of 10 Pa C2H2 by forest soils and convenience for laboratory incubations, 50 Pa C2H2 in headspace gas can be used to study the origin of N2O emissions from forest soils under aerobic con- ditions and the key associated driving mechanisms. The N2O and CO2 emissions from the soils at the same distances from the Quercus mongolica trunks were larger than those from the Pinus koraiensis trunks, and both emissions decreased as the distances from trunks increased. The stepwise regression analysis showed that 95% of the variability in soil CO2 emissions could be accounted for by the concentrations of soil total C and water soluble organic C and soil pH, and that 72% of the variability in soil N2O emissions could be accounted for by the concentrations of soil total N, exchange

关键词：氮化合森林土壤微生物周转基

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