简介:Background:Climatechangeislikelytocausesignificantmodificationsinforests.Risingtothischallengemayrequireadaptationofforestmanagement,andthereforeshouldtriggerproactivemeasuresbyforestmanagers,butitisuncleartowhatextentthisisalreadyhappening.Methods:ThesurveycarriedoutinthisresearchassesseshowforeststakeholdersinBelgiumperceivetheroleoftheirforestmanagementinthecontextofclimatechangeandtheimpedimentsthatlimittheirabilitytoprepareandrespondtothesechanges.Results:Respondentsindicatedstrongawarenessofthechangingclimate,withmorethantwo-thirds(71%)expressingconcernabouttheimpactsofclimatechangeontheirforests.However,lessthanone-thirdoftherespondents(32%)reportedmodifyingtheirmanagementpracticesmotivatedbyclimatechange.Amongthemajorconstraintslimitingtheirclimaterelatedactions,lackofinformationwasconsideredthemostimportantformanagersofbothpublicandprivateforests.Conclusions:Knowledgetransferisanessentialconditionforresearchtoleadtoinnovation.Improvingthecommunicationanddemonstrationofpossiblesolutionsforclimatechangeadaptationisthereforelikelytobethemosteffectivestrategyforincreasingtheiradoption.
简介:Background:Thequantitativeimpactofforestmanagementonforests'woodresourcewasevaluatedforPiceaandFagusmixedforests.Theeffectsontheproductivityoftenderingoperations,thinningsandrotationlengthhaveseldombeendirectlyquantifiedonlandscapescale.Methods:Twositesofsimilarfertilitybutsubjecttocontrastedforestmanagementwerestudiedwithdetailedinventories:oneinGermany,theotherinRomania,andcomparedwiththerespectivenationalforestinventories.InRomania,regulationsimposeverylongrotations,lowthinningsandaperiodofno-cutbeforeharvest.Incontrast,tendingandthinningsarefrequentandintenseinGermany.Harvestsstartmuchearlierandmustavoidclearcuttingbutmaintainapermanentforestcoverwithnaturalregeneration.WhileGermanyhasanaverageannualwoodincrementrepresentativeforCentralEurope,RomaniarepresentstheaverageforEasternEurope.Results:ThelackoftendingandthinningintheRomaniansiteresultedintwiceasmanytreesperhectareasintheGermansiteforthesameage.TheproductivityinRomanianproductionforestswas20%lowerthaninGermanydespiteasimilarfertility.Theresultsweresupportedbythedatafromthenationalforestinventoryofeachcountry,whichconfirmedthatthesamedifferentialexistsatcountryscale.Furthermore,providedthedifferenceinrotationlength,twocropsareharvestedinGermanywhenonlyoneisharvestedinRomania.ThelossesofproductionduetoalowerlevelofmanagementinRomaniawhereestimatedtoreach12.8millionm~3·y~(-1)inregularmountainproductionforests,andto15millionm~3·y~(-1)ifmanagedprotectionforestisincluded.Conclusions:TheproductivityofPiceaandFagusmountainforestsinRomaniaisseverelydepressedbythelackoftendingandthinning,byoverlylongrotationsandtheexistenceofa25-yearsno-cutperiodpriortoharvest.TheaveragestandingvolumeinGermanywas50%lowerthaninRomania,butthehigherharvestingrateresultedinmorethandoublingwoodproduct
简介:在农业土地支持土壤碳隐遁是可行策略之一速度观察气候变化。然而,玷污物理骚乱由加速侵蚀加重了土壤降级过程。因此,减少通过适当farming/agricultural系统的物理骚乱是的土壤的大小和紧张对农业陆地的土壤碳水池能力的管理必要。不同土地的四个地点使用类型/耕种惯例,我)到没有为止(NT)玉米(ZeamaysL.)(NTC),ii)到为止常规(CT)玉米(CTC),iii)pastureland(PL),和iv)本国的森林(NF),在北方Appalachian试验性的分水岭车站,包括水马厩聚集在土壤总数索引上估计NT耕作的影响的美国俄亥俄,吝啬的重量直径(MWD)和几何平均数被选择直径(GMD),和土壤器官的碳和全部的氮内容。收到的NTC阴谋恐吓粪肥增加(大约15t哈1)每隔一年。CTC阴谋包含了耕作的disking和凿子和液体化肥申请(110L哈1)。结果证明水马厩聚集和MWD比为CTC在为NTC的土壤是更大的。在0-10厘米土壤层,>4.75公里尺寸部分统治了NTC并且而在不同地点之中的1)跟随了NF的趋势,为CTC多于那是46%>PL>NTC>CTC,为在CTC上的NTC更是35%-46%。NT实践提高了在CT实践上并且这样的器官的碳内容是的土壤在农田的碳隐遁的重要策略玷污。
简介:10月13日,从国家安全生产监督管理总局获悉,国务院安全生产委员会办公室将组织成立31个检查组,深入全国32个省级统计单位,进行安全生产大检查“回头看”。