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Biomass production,nutrient cycling and distribution in age-sequence Chinese fir(Cunninghamia lanceolate)plantations in subtropical China

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Journal of Forestry Research 2016年第2期27卷 357-368页

作者： Lili Zhou Addo-Danso Daniel Shalom Pengfei Wu Zongming He Chunhua Liu Xiangqing Ma Forestry College Fujian Agriculture and Forestry UniversityFuzhou 350002People's Republic of China Chinese Fir Engineering Technology Research Center of the State Forestry Administration Fuzhou 350002People's Republic of China Department of Forest and Conservation Sciences Faculty of ForestryUniversity of British Columbia2424 Main MallVancouverBC V6T 1Z4Canada Ecosystem Services and Climate Change Division CSIR-Forestry Research Institute of GhanaBox 63 KNUSTKumasiGhana Xinkou Experimental Forest farm of Fujian Agriculture and Forestry University Sanming 365002People's Republic of China

Biomass production and nutrient （N, P, K, Ca and Mg） accumulation, distribution and cycling were quantified in young, mature and over-mature （10-, 22-, and 34-year old） Chinese fir [Cunninghamia lanceolate （Lamb.） Hook] plantations in southern China. Total stand biomass of young, mature and over-mature stands was 38, 104 and 138 t ha-1 respectively. Biomass production inc.eased significantly with age. Stem wood represented the highest percentage of stand biomass, accounting for 41, 55 and 63 % in the young, mature and over-mature plan- tations respectively. nutrients concentration was highest in live needles and branches, and lowest in stem wood. The plantations accumulated more N, followed by K, Ca, Mg, and P. Nutrient return amount, nutrient utilization effi- ciency, nutrient turnover time, the ratio of nutrient return and uptake inc.eased with stand age, which implies that young Chinese fir deplete soil nutrients to maintain growth, and efficiently utilize nutrients to decrease dependence on soil nutrients as they age. Harvesting young Chinese fir plantations would therefore lead to high nutrient loss, but prolonging the rotation length could improve soil recovery, and help sustain productivity in the long-term. Improved nutrient return through litterfall as stands get older may also be beneficial to nutrient pool recovery.

关键词： Cunninghamia lanceolate Biomassproduction Nutrient distribution Nutrient cycling

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Integrated Nutrient Management Improves Productivity and Quality of Sugarcane(Saccharum Officinarum L.)

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Phyton-International Journal of Experimental Botany 2022年第2期91卷 439-469页

作者： Md.Shamsul Arefin Md.Ariful Islam Md.Mokhlesur Rahman Md.Abdul Alim Sabry Hassan Mahmoud F.K.Soliman Mohamed M.Hassan Rajan Bhatt Akbar Hossain Physiology and Sugar Chemistry Division Bangladesh Sugarcrop Research InstituteIshurdi6620Bangladesh On-farm Research Division Bangladesh Agricultural Research InstitutePabna6600Bangladesh Department of Agricultural Chemistry Bangladesh Agricultural UniversityMymensingh2202Bangladesh Department of Food Technology and Rural Industries Bangladesh Agricultural UniversityMymensingh2202Bangladesh Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia Nature Conservation Sector Egyptian Environmental Affairs AgencyCairo11728Egypt Regional Research Station Panjab Agricultural UniversityKapurthala144601India Bangladesh Wheat and Maize Research Institute Dinajpur5200Bangladesh

Sugarcane is one of the major important sugar yielding crops in *** an exhaustive crop,sugarcane removes a huge amount of plant nutrients from the ***,the combined use of organic and inorganic fertilizers can be a good approach to deal with nutrient depletion and promote sustainable crop production as well as improve soil ***,an attempt was made to identify the most fruitful and profitable integrated nutrient management on the aspects of growth,yield and quality of sugarcane in two consecutive growing *** treatments:T_(1)=Control,T_(2)=165:55:120:30:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(3)=Poultry Litter(PL)at 5 t ha^(−1)+95:51:87:9:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(4)=Cow Dung(CD)at 15 t ha^(−1)+36:52:60:17:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(5)=Press Mud(PM)at 15 t ha^(−1)+10:50:43:0:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(6)=Mustard Oil Cake(MOC)at 0.5 t ha^(−1)+140:54:115:25:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1)and T_(7)=GM(Green Manure)at 5 t ha^(−1)+140:53:100:28:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1)were used in this *** years data showed that treatment T_(3)produced the maximum amount of tillers,total dry matter yield,millable sugarcane,cane yield and sugar yield,followed by the T_(4)*** highest stalk heights were recorded in the T_(3)treatment,which was statistically similar to all other treatments except T_(1)and T_(2).The juice quality parameters viz.,brix and pol in cane were found significant in treatment T_(3)while the highest purity was obtained in the T_(7)*** the data of Jaggery(goor)quality parameters,the highest sucrose content,color transmittance,Jaggery(goor)recovery and the lowest ash content of Jaggery(goor)were observed in the T_(3)treatment,which was statistically similar to the T_(4)treatment in both *** highest cost of production was obtained from the T_(6)treatment while the highest gross return,net return and BCR were recorded in the T_(3)*** sig

关键词： Nutrient fertilizer growth physiology yield quality sugarcane

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抚仙湖流域负荷削减的水质风险分析

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中国环境科学 2013年第9期33卷 1721-1727页

作者：邹锐张晓玲刘永赵磊朱翔颜小品阳平坚 Tetra Tech Inc. 10306 Eaton Place Ste340 Fairfax VA 22030 USA 北京大学环境科学与工程学院水沙科学教育部重点实验室北京100871 云南省环境科学研究院云南省高原湖泊流域污染过程与管理重点实验室云南昆明650034

以抚仙湖为研究对象,基于三维水动力-水质模型EFDC平台,开发了EFDC-神经网络(NN)耦合模型;并选用30d移动平均值为解译方式核算抚仙湖在不同风险下的流域负荷削减(TMDL).结果表明,对于100%的达标频度,为了达到I类水质,TP允许增加14%～18%... 详细信息

以抚仙湖为研究对象,基于三维水动力-水质模型EFDC平台,开发了EFDC-神经网络(NN)耦合模型;并选用30d移动平均值为解译方式核算抚仙湖在不同风险下的流域负荷削减(TMDL).结果表明,对于100%的达标频度,为了达到I类水质,TP允许增加14%～18%,COD允许增加9%～11%,但TN需要削减13%～14%.如果放松对达标频度的要求,污染负荷将允许相应地增加.研究结果可为流域管理依据不同的风险与管理费用偏好实施流域削减提供基础.

关键词：三维水动力-水质模型人工神经网络风险负荷削减

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Arsenite provides a selective signal that coordinates arsenate uptake and detoxification through the regulation of PHR1 stability in Arabidopsis

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Molecular Plant 2021年第9期14卷 1489-1507页

作者： Cristina Navarro Cristian Mateo-Elizalde Thotegowdanapalya C.Mohan Eduardo Sanchez-Bermejo Oscar Urrutia Maria Nieves Fernandez-Muniz Jose M.Garcia-Mina Riansares Munoz Javier Paz-Ares Gabriel Castrillo Antonio Leyva Department of Plant Molecular Genetics Centro Nacional de Biotecnología-Consejo Superior de Investigaciones CientíficasMadrid 28049Spain Department of Environmental Biology Sciences SchoolUniversity of NavarraPamplona 31008Spain Department of Analytical Chemistry School of Chemical SciencesUniversidad Complutense de MadridMadrid 28040Spain Present address:Department of Biotechnology and Bioinformatics Faculty of Life SciencesJSS Academy of Higher Education and ResearchMysuruKarnataka 570015India Present address:S&A Fresh Produce.Brook farm MardenHereford HR13ETUK Future Food Beacon of Excellence&School of Biosciences University of NottinghamNottingham LE125RDUK

In nature,plants acquire nutrients from soils to sustain growth,and at the same time,they need to avoid the uptake of toxic compounds and/or possess tolerance systems to cope with *** is particularly challenging when the toxic compound and the nutrient are chemically similar,as in the case of phosphate and *** this study,we demonstrated that regulatory elements of the phosphate starvation response(PSR)coordinate the arsenate detoxification machinery in the *** showed that arsenate repression of the phosphate transporter PHT1;1 is associated with the degradation of the PSR master regulator *** arsenic is sequestered into the vacuole,PHR1 stability is restored and PHT1;1 expression is ***,we identified an arsenite responsive SKP1-like protein and a PHR1 interactor F-box(PHIF1)as constituents of the SCF complex responsible for PHR1 *** found that arsenite,the form to which arsenate is reduced for compartmentalization in vacuoles,represses PHT1;1 expression,providing a highly selective signal versus phosphate to control PHT1;1 expression in response to ***,our results provide molecular insights into a sensing mechanism that regulates arsenate/phosphate uptake depending on the plant’s detoxification capacity.

关键词： arsenic signaling F-box protein arsenate uptake arsenic detoxification phosphate starvation phytoremediation

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Feeding Biochar to Cows:An Innovative Solution for Improving Soil Fertility and farm Productivity

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Pedosphere 2015年第5期25卷 666-679页

作者： Stephen JOSEPH Doug POW Kathy DAWSON David R.G.MITCHELL Aditya RAWAL James HOOK Sarasadat TAHERYMOOSAVI Lukas VAN ZWIETEN Joshua RUST Scott DONNE Paul MUNROE Ben PACE Ellen GRABER Torsten THOMAS Shaun NIELSEN Jun YE Yun LIN PAN Genxing LI Lianqing Zakaria M.SOLAIMAN Discipline of Chemistry University of Newcastle School of Materials Science and Engineering University of New South Wales Electron Microscopy Center AIIMUniversity of Wollongong Institute of Resources Ecosystem and Environment of AgricultureNanjing Agricultural University Marron Brook farm Warren Catchments Council 52 Bath StManjimup 6258 (Australia) Mark Wainwright Analytical Centre University of New South Wales Wollongbar Primary Industries Institute NSW Department of Primary Industries Institute of Soil Water and Environmental SciencesThe Volcani CenterAgricultural Research Organization Centre for Marine Bio-Innovation School of Biotechnology and Biomolecular SciencesThe University of New South Wales Soil Biology and Molecular Ecology Group School of Earth and Environment (M087)The University of Western Australia

Addition of biochar produced through thermal decomposition of biomass has been seen as a strategy to improve soils and to sequester carbon （C）, but wide scale implementation of the technology requires to devise innovative profitable solutions. To develop biochar utilisation with an integrated system approach, an innovative program was implemented in 2012 on a 53-ha farm in Western Australia to determine the costs and benefits of integrating biochar with animal husbandry and improvement of pastures. Biochar was mixed with molasses and fed directly to cows. The dung-biochar mixture was inc.rporated into the soft profile by dung beetles. We studied the changes in soil properties over 3 years. Biochar extracted from fresh dung and from the soil to a depth of 40 cm was characterised. A preliminary financial analysis of the costs and benefits of this integrated approach was also undertaken. The preliminary investigation results suggested that this strategy was effective in improving soil properties and inc.easing returns to the farmer. It was also concluded that the biochar adsorbed nutrients from the cow＇s gut and from the dung. Dung beetles could transport this nutrient-rich biochar into the soil profile. There was little evidence that the recalcitrant component of the biochar was reduced through reactions inside the gut or on/in the soil. Further research is required to quantify the long-term impact of integrating biochar and dung beetles into the rearing of cows.

关键词： animal husbandry biochar C sequestration dung beetles financial benefit pasture

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Phenotypic and genotypic background underlying variations in fatty acid composition and sensory parameters in European bovine breeds

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Journal of Animal Science and Biotechnology 2014年第2期5卷 154-162页

作者： Natalia Sevane Hubert Levéziel Geoffrey R Nute Carlos Sanudo Alessio Valentini John Williams Susana Dunner the GeMQual Consortium Departamento de Producción Animal Facultad de Veterinaria Universidad Complutense de Madrid Madrid Spain INRA UMR 1061 F-87000 LimogesFrance Umversité de Limoges UMR 1061 F-87000 Limoges France Division of farm Animal Science University of Bristol Bristol BS40 5DU UK Departimento de Producción Animal y Ciencia de los Alimentos Universidad de Zaragoza 50013 Zaragoza Spain Dipartimento di Produzioni Animali Universitá della Tuscia via De Lellis 01100 Viterbo italy Parco Tecnologico Padano Via Einstein Polo Universitario 26900 Lodi Italy

Background： Consuming moderate amounts of lean red meat as part of a balanced diet valuably contributes to intakes of essential nutrients, in this study, we merged phenotypic and genotypic information to characterize the variation in lipid profile and sensory parameters and to represent the diversity among 15 cattle populations. Correlations between fat content, organoleptic characteristics and lipid profiles were also investigated. Methods： A sample of 436 largely unrelated purebred bulls belonging to 15 breeds and reared under comparable management conditions was analyzed. Phenotypic data -inc.uding fatness score, fat percentage, individual fatty acids （FA） profiles and sensory panel tests- and genotypic information from 11 polymorphisms was used. Results： The correlation coefficients between muscle total lipid measurements and absolute vs. relative amounts of polyunsaturated FA （PUFA） were in opposite directions. inc.easing carcass fat leads to an inc.easing amount of FAs in triglycerides, but at the same time the relative amount of PUFAs is decreasing, which is in concordance with the negative correlation obtained here between the percentage of PUFA and fat measurements, as well as the weaker correlation between total phospholipids and total lipid muscle content compared with neutral lipids. Concerning organoleptic characteristics, a negative correlation between fiavour scores and the percentage of total PUFA, particularly to n-6 fraction, was found. The correlation between juiciness and texture is higher than with flavour scores. The distribution of SNPs plotted by princ.pal components analysis （PCA） mainly reflects their known trait associations, although influenced by their specific breed allele frequencies. Conclusions： The results presented here help to understand the phenotypic and genotypic background underlying variations in FA composition and sensory parameters between breeds. The wide range of traits and breeds studied, along with the genotypic informa

关键词： Bos taurus Beef Fatty acids Omega-3 Genotype assisted selection

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Optimizing a nitrogen-supplemented, condensed corn soluble medium for growth of the Polyhydroxyalkanoate producer Pseudomonas putida KT217

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International Journal of Agricultural and Biological Engineering 2012年第4期5卷 62-67页

作者： Jeremy Javers William Gibbons Chinnadurai Karunanithy ICM Inc.ColwichKansasKSUSA Biology and Microbiology Department South Dakota State UniversityBrookings SD57007 USA Food Engineering Food and NutritionUniversity of Wisconsin-StoutMenomonie WI 54751 USA

Pseudomonas putida KT217 produces medium-chain-length polyhydroxyalkanoate(mcl-PHA)that is of commercial interest as a biodegradable *** reduce PHA production costs,a less expensive medium to grow *** KT217 to a high cell dry weight(CDW)was *** KT217 was grown in aerated shake flasks on a condensed corn solubles(CCS)based medium that provided several organic acids and carbohydrates that were utilized for *** medium was prepared by adding various amounts of fresh CCS(100-600 g/L,or 34.9-209.4 g/L dry basis)to water and then centrifuging and *** CCS permeate media contained dry matter levels of 28.8-164.9 g/*** CCS permeate medium containing 108.4 g/L solids produced approximately 6 g CDW/L,at a growth rate of 1.03 per hour,and maximum cell population of 4×109 CFU/*** CCS is low in nitrogen,ammonium hydroxide was added at a level of 1.73 g/L,and this significantly inc.eased the CDW(>20 g/L)produced in an aerated ***,a nitrogen supplemented CCS medium could provide a cheap source of nutrients for production of *** KT217 and PHA.

关键词： cell density cell dry weight(CDW) biodegradable plastic biocreator pH nitrogen supplement growth rate

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基于EFDC模型的深圳水库富营养化模拟

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湖泊科学 2014年第3期26卷 393-400页

作者：唐天均杨晟尹魁浩邹锐深圳市环境科学研究院国家环境保护饮用水水源地管理技术重点实验室深圳市饮用水水源地安全保障重点实验室深圳518001 Tetra Tech Inc.Fairfax VA USA 10306

基于EFDC模型构建了深圳水库三维水动力和富营养化定量模拟模型.分别用2009年和2010 2011年流量、水位和水质等观测数据对模型进行了校正和验证,准确地反映了深圳水库的水动力和水质变化过程.在此基础上,假定支流污染截排、水库调度和... 详细信息

基于EFDC模型构建了深圳水库三维水动力和富营养化定量模拟模型.分别用2009年和2010 2011年流量、水位和水质等观测数据对模型进行了校正和验证,准确地反映了深圳水库的水动力和水质变化过程.在此基础上,假定支流污染截排、水库调度和降低东江引水污染负荷3种情景进行深圳水库富营养化数值模拟,3种情景下库中Chl.a峰值浓度分别降低1.0%、16.4%和46.3%,平均浓度分别降低1.3%、29.8%和29.9%.深圳水库具有良好的交换能力,尚未出现水华暴发,但入库营养盐负荷高,存在较大的富营养化风险;在目前沙湾河污水已经截排的基础上再实施支流污染控制,对水质改善和藻类控制作用已不明显;水库调度和削减东江引水污染负荷对深圳水库水质和富营养化改善明显,能够有效降低水华发生的风险.

关键词：水动力水质富营养化深圳水库 EFDC模型

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Improvement of Wolfberry(Lycium barbarum L.)Fruit Yield and Quality and Enhancement of Soil Fertility by Nitrogen Reduction Combined with Organic Fertilizers

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Journal of Agricultural Science and Technology(A) 2024年第1期14卷 1-18页

作者： Yajun Xin Congcong Li Tingting Xu Youliang Wang Rong Fu Tahir Shah Shouzhong Xie Rong Zhang Haiyan Sheng Yajun Gao College of Natural Resources and Environment Northwest A&F UniversityYangling 712100ShaanxiChina State Key Laboratory of Plateau Ecology and Agriculture Qinghai UniversityXining 810016QinghaiChina Soil and Fertilizer Institute Academy of Agricultural and ForestryQinghai UniversityXining 810016QinghaiChina Nuomuhong farm Dulan 816199QinghaiChina College of Agriculture and Animal Husbandry Qinghai UniversityXining 810016QinghaiChina

Excessive amounts of nitrogen(N)fertilizers are applied during wolfberry production,resulting in some soil problems as well as potential environmental risks in the Qinghai-Tibet *** this study,organic fertilizers were used to replace part of the N fertilizer in wolfberry fields with different fertility levels.N fertilizer rates had 0,50,100,150,200,and 250 g N/*** fertilizer rates had 0,2,4,6,8,and 10 kg organic fertilizer/*** experimental treatments inc.uded 6 combinations of N0M10,N50M8,N100M6,N150M4,N200M2,and control was *** results showed that in the high-fertility soils,combinations of N150M4,N100M6 and N50M8 treatments were inc.eased in yields,fruit shape index,flavonoid content,total phenol content,mineral nutrient content,and antioxidant activity of wolfberry *** they were improved in soil fertility and decreased in residual nitrate through the soil depth of 0-300 *** the soil with less fertility,fruit yield,amino acid contents,flavonoids,total phenols,mineral nutrients and antioxidant activity of fruits were inc.eased by the N200M2,N150M4 and N100M6 treatments and soil fertility was improved as *** more residual nitrate was found in the depth of 0-100 cm of soil with both chemical and organic fertilizer compared with the ***,in the Qinghai-Tibet Plateau,combining decreased N fertilizer with organic fertilizer rather than chemical fertilizer alone could help farmers achieve satisfactory yields and quality of wolfberry fruits and reduce the risk of nitrate *** conclusion,50-150 g/plant of N fertilizer combined with 4-8 kg/plant of organic fertilizer in high-fertility gardens and 100-200 g/plant of N fertilizer combined with 2-6 kg/plant of organic fertilizer in low-fertility gardens are recommended for wolfberry cultivation.

关键词： Wolfberry fruit quality antioxidant activity organic fertilizer nitrogen fertilizer

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Biocultural Diversity of Sarangani Provinc., Philippines: An Ethno-Ecological Analysis

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Rice science 2015年第3期22卷 138-146页

作者： Florence Lasalita ZAPICO Catherine Hazel AGUILAR Angelie ABISTANO Josephine Carino TURNER Lolymar Jacinto REYES Science Department College of Natural Sciences and Mathematics Mindanao State University-Fatima Graduate School Crop Science Cluster University of the Philippines Los Baos College Galing Foundation inc.rporated Dole Philippines Agrarian Reform Beneficiaries Cooperative Inc.Homes Sociology Department College of Social Sciences and Humanities Mindanao State University-Fatima

This paper discussed effects of lowland-associated influences on upland ecology, food security and biocultural diversity in the Sarangani farming communities of the Philippines. In the uplands of Sarangani Provinc., the conservation of traditional rice varieties, the centrality of rice in tribal life, and the continued observance of planting rituals attest to its cultural significance and convey a common desire for cultural preservation and community solidarity. Economic and socio-political pressures had transformed tribal communities, although vestiges of traditional farming systems are still being practiced in remote sitios（villages）. Changing land use patterns had also resulted in shrinking farm sizes and consequently in food insecurity in the Sarangani uplands. Extractive industries（i.e. logging, mining and charcoal making） and swidden farming were observed to cause widespread environmental degradation, while modern agriculture had undermined the capacity of indigenous peoples to survive because of their complete dependence on lands and resources. With the reality that cultural and biological diversities are inextricably linked, trans-disciplinary strategies coupling indigenous knowledge systems with scientific knowledge should, therefore, be instituted to save the Sarangani upland ecosystem, the indigenous peoples and their tribal resources.

关键词： indigenous knowledge system rice swidden farming traditional agriculture

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