学科分类
/ 7
138 个结果
  • 简介:Asafundamentalright,therighttoadequatefoodentitleseveryonetolivewithdignitybyhavingaccesstoadequatefoodthatissafeandnutritiousHowever,thecurrentfoodsystemfeaturesunequalfoodproductionanddistributionToremedythissituation,certainconceptshavebeenproposedtorealizetherighttoadequatefood,includingfoodsecurity,foodsafety,foodsovereignty,fooddemocracyandfoodexceptionThispaperanalysestheseconceptsfromtheperspectiveoftherighttoadequatefoodandhowtheycanbeincorporatedintolegislationtohelprealizeandprotectthisright

  • 标签:
  • 简介:Thispapercalculatestheland(includingwaterarea)requirementforfoodconsumptioninbothbalancedandactualdietinChinabyecologicalfootprintanalysis.Todeterminewhetherlogicalandactualfooddemandsarewithinnaturalregenerativeability,carryingcapacity(excludingforestryproduction)isalsocalculated.Resultsshowthatactualdietpatternswereecologicallyfriendlyintheperiodof1982-2004inChina,mainlybecauseoftheruralmoderatedietpatterns.Butactualpercapitafootprintalreadyoverranitscorrespondinglogicvalueof0.976hainurbanareasin2002.ProductiveareasforfoodproductioncansatisfythelandrequirementforactualdietpatternsduringtheresearchingperiodinChina,neverthelesscannotsatisfythatforbalanceddietpatternorsolvetheproblemofunbalancedecologicalfootprint.ThecontinualrisingecologicalfootprintoffoodconsumptioninbothruralandurbanareasindicatesthatpercapitafootprintwillkeeponincreasinginChinaandevenmaybemorethanthesuggestedlogicvalueifnorelevantcountermeasuresaremadetoregulatedietpatterns.Strictlyspeaking,Chinaisfacingfoodshortage,bothinqualityandinquantity.

  • 标签: 社会生态学 食品消费 承载量 中国
  • 简介:Indespiteoffluctuationinrecentyears,thegrainyieldinChinahasbeenincreasing,whichrelievestheconflictbetweensupplyanddemandandturnsthesituationoffoodsecuritygood.However,becauseoftherapidincreaseinfoodconsumption,theconflictsoffoodqualityandstructureinthesupplyanddemandequilibriumhasbecomemoreandmoreobviousandthelong-effectivemechanismoffoodsecurityhasnotbeenestab-lishedyet.ItisfoundthatthefactorsaffectingfoodsecurityinChinaincludethescarcityanddissipationofresources,farmers’lowenthusiasminplantinggraincropsandtheinappropriatenessoftheemphasisandmeasuresofmacro-economicregulationandcontrol.Therefore,theauthorsadvancetooptimizeresourcesallocation,strengthenmacro-economicregulationandcontrolandpolicystimulationandestablishthemechanismofallocatinggrainproductioncost,tosetupthelong-effectivemechanismofChinafoodsecurityandkeepitstableinthelongterm.

  • 标签: 中国 食品安全 长效机制 资源配置 政策
  • 简介:Withthehigh-speeddevelopmentofeconomyinChina,peoplerequirehigherandhigherqualityoffood,andaccidentsoffoodsafetyinrecentyearshavebeenreported,causingthepromotionofconsumptiondemandongreenfood.Thepaperfirstlyinvestigatesthecurrentsituationofgreenfoodindustryathomeandabroad,thenfocusesontheanalysisofthedemandofgreenfoodmarket.Westudythebalancebetweenthegreenfoodandthepercapitadisposableincomeinshortandlongterm,throughvectorautoregressionmodelandco-integrationanalysisontheincomeelasticityofdemand.Thepapershowsthat,therelationshipbetweengreenfoodconsumptionandpercapitadisposableincomeis"bullwhipeffect",whichmeansthatthepercapitadisposableincomehaveasignificantroletothegreenfoodsalesintheshortterm,butnostableco-integrationrelationshipinthelongterm.

  • 标签: green FOOD DEMAND ANALYSIS INCOME ELASTICITY
  • 简介:

  • 标签:
  • 简介:食物可获得性,食谱的作文并且蒙古的瞪羚(Procapragutturosa)的选择放牧在NeiMonggol在Hulunber草地被学习。蒙古的瞪羚的食物可获得性显示出季节的变化。植物生物资源在秋天和冬季比那在春天和夏天是更高的。瞪羚的烘便的作文证明含纤维的部分分别地在春天,秋天,和冬季占据了62.4%,74.8%,和66.0%。喜欢而不是grazeCompositeae的蒙古的瞪羚,Leguminosae,瞀或蒜之类spp。并且在春天和秋天的另外的非禾本草本植物草,如此的asAneurolepidiumchinenseandStipaspp。有选择地在冬季正在喂。

  • 标签: Procapra gutturosa FOOD AVAILABILITY FOOD HABITS
  • 简介:AbstractAntimicrobial resistance leads to failure of clinical antimicrobial therapy, and has raised urgent global public health concern. Humans can acquire antimicrobial resistance from drugs through the food chain or the environment (contaminated water, air, soil, or manure). While antimicrobials have been regular supplements in animal feed that maintain health and improve productivity of livestock, their over-use in feeding forage has led to a rise in antibacterial resistance. This review summarizes the current use of antimicrobials in livestock, the harmful effects of antimicrobial resistance, and the comprehensive combat measures.

  • 标签: Antimicrobials Antibiotic-resistance Feed additives Food safety Food animals Public health
  • 简介:蚜虫属gossypii格洛弗显示出明显的主人专门化,与在许多区域的专业化葫芦、专业化棉花的遗传因子型或主人赛跑。因为它的年度出生的主人庄稼更早开始衰老,专业化葫芦的遗传因子型可以承受食物缺乏。这遗传因子型使用克服这挑战的方法仍然糟糕被理解。以便在主机移动和用法理解专业化葫芦的遗传因子型蚜虫的潜力,棉花(Gossypiumhirsutum)上的这遗传因子型的性能,普通却差的优秀主机植物,在这研究被探索。仅仅当这些植物有至少九片叶子时,专业化葫芦的蚜虫能在棉花上建立人口,并且随后的人口相当慢慢地发展。存在whitefly,棉花上的人口改进了专业化葫芦的蚜虫的成功率。专业化葫芦的蚜虫在棉花的更旧的叶子主要是分布式的,与仅仅在上面的叶子安定的一些。为40,54和61 days在棉花上饲养的专业化葫芦的蚜虫仍然为他们的出生的主人植物,黄瓜(Cucumissativus),而非棉花维持了强壮的偏爱,并且当他们被转移到新六叶的棉花上时,他们繁殖的率和天赋的内在的率增加的网戏剧性地更低植物或分开的叶子。因此,我们断定专业化葫芦的蚜虫有潜力利用成熟或强调whitefly的棉花植物,而是那棉花上的这喂的经验没为葫芦改变他们的专门化。一些棉花植物能充当一位暂时的主人让专业化葫芦的蚜虫克服食物缺乏从开始衰老产生葫芦。

  • 标签: 蚜虫 主机 食物 葫芦科植物 棉花植株 寄主植物
  • 简介:Soilfoodwebstructureisfundamentaltoecosystemprocessandfunction;moststudiesonsoilfoodwebstructurehavefocusedonagro-ecosystemsunderdifferentmanagementpracticesandnaturalterrestrialecosystems,butseldomongreenhouses.ThisstudyexploredthestaticandtemporalvariabilityofsoilfoodstructureintwogreenhousesofShandongProvince,NorthChinaoveratwo-yearperiod.Thestaticpropertiesweremeasureddirectlybysurveyingfunctionalgroupcompositionandaseriesofparametersportrayingthespeciesproperties,linkproperties,chainpropertiesandomnivorypropertiesoftheweb,aswellasindirectlythroughcalculationofnematodeindices,enrichmentindex(EI),structureindex(SI),andchannelindex(CI).Thedynamicvariabilityofgreenhousesoilfoodstructurewasdescribedbythedynamicsoffunctionalgroups,Bray-Curtis(BC)similarityandclusteranalysis.Theresultsshowedthatthegreenhousesoilfoodwebcontained14functionalgroups,withmicrobeshavingthehighestmeanbiomass,followedbyprotozoa.Ofthethreefunctionalgroupsofprotozoa,flagellateswerethedominantgrouponmostsamplingdates,amoebaeonlybecamethedominantgroupduringthesummer,whileciliatesweretheleastprevalentgroup.Allnematodeswereassignedintooneofthefourfunctionalgroups,bacterivorous,fungivorous,herbivorousandomnivorous,andthefungivorousnematodeshadthelowestmeanbiomass.Miteswereassignedintothreefunctionalgroupsandtheomnivorousnoncryptostigmaticmiteswerethedominantgroup.Allthefunctionalgroupsshowedsignificantseasonalchanges.Thesoilfoodwebconnectancewas0.15,themaximumfoodchainlengthwas5,andtheaveragefoodchainlengthwas3.6.TheprofilesoftheEIandSIshowedthatthefoodwebwasresourcedepletedwithminimalstructure.TheresultsofCIindicatedthatthebacterialdecompositionpathwaywasthedominantpathwayinthefoodwebofthegreenhousesoilsstudiedandtheresultsofBCsimilarityshowedthatthesoilfoodwebhadhig

  • 标签: 温室土壤 食物结构 静态特性 网结构 动态特性 温室环境
  • 简介:CHENOPODIUMQUINOA:Super-NutritiousFoodforthe21stCenturyZHANGYONGQING&DOQUNGChenopodiumquinoa,whichPlateau,SouthAmerica,fortho...

  • 标签:
  • 简介:[内容摘要] 翻译的目的在于转换文本信息,实现信息的有效传递,即要实现源语与目标语功能与效果上的对等。当下,“绿色食品”的英译让人对汉译英实践产生很多思考,究竟是直译还是意译,是“一一对应”翻译还是“入乡随俗”翻译,还是通过语境分析后再翻译,所有这些都是文章所要讨论的问题。

  • 标签: [] 绿色食品 直译 意译 语境
  • 简介:推迟的沉积在河和存款里从流动的水吸附污染物质到床上。然而,在河床沉积积累的污染物质可以为时间的一个长时期通过食物链影响简历社区。学习这个问题重金属的集中(Cr,Cd,Hg,Cu,Fe,Zn,Pb并且作为)在2006-2007期间在长江的中间、更低的活动范围在水,沉积,和鱼/无脊椎动物里被调查。重金属的集中比在水里在沉积更高是100-10,000时间。Benthic无脊椎动物由于他们的最近在他们的纸巾有重金属的相对高的集中到污染沉积。而phytoplanktivore鱼例如银鲤鱼,积累了重金属的最低集中,Benthicinvertivore鱼有重金属的中等高的集中。Cu,Zn,和Fe的集中比Hg高,Pb,Cd,Cr,并且作为在织物样品。重金属的集中比在湖沉积在河沉积是更低的。相反地,重金属的集中比在湖水里在河水里是更高的。当进水身体的一个污染事件经常是临时的时,污染物质的效果可能由于他们全神贯注于沉积的趋势是长寿的然后释放进食物链。重金属在下列顺序被集中:底部材料>居于水底的鱼和benthic动物志>中间降低的层鱼>上面中间的层鱼>流水。

  • 标签: 长江流域 沉积物 污染 重金属