简介:TheConversionofFarmlandtoForestsProject(CFF)isoneofthesixgreatforestecologicalProjectsinChinaandoneofthetengreatforestecologicalProjectsintheworld,rankingthethirdinoverallscaleandthefirstininvestment.CFFwasofficiallyinitiatedin2002,covering1897counties(county-levelcitiesanddistricts)in25provinces(autonomousregionsormunicipalities)ofChina.Thewholeinvestmentismorethan40billionUS$duringabout20years(from1999to2017),aimingtoformbetterecologysysteminfragileecologyregionsandeffectivelycontrolthesoilandwatererosionoftheYangtzeandtheYellowRiverandsandstormoftheThree-northRegionsinChina.TheexperimentalProjectofCFFbeganin1999,includingSichuan,ShanxiandGansuprovince,andthescopeofCFFwaswidenedlater.About1.16millionhaoffarmlandswereconvertedtoforestlands,andonemillionhaofplantationinmountainsandwastedlandswerecompletedin3years,involving20provinces(autonomousregionsandmunicipalities),400counties,27thousandvillages,5.7thousandtowns,4.1millionfarmfamiliesand16millionfarmers.
简介:Weevaluatedseedproductioninafirst-generationorchardofChinesepine(Pinustabuliformis)duringthecrucialtransitionperiodfromfirstgenerationtoadvancedgenerations.Clonesvariedsignificantlyinalltraitsrelatedtoseedproduction.Repeatabilityofthesetraitsrangedfrom0to0.96.Seedproductionperramet(SPPR),seedproducingindex(SPI),thenumberofrelativefemalestrobili(RFS),thenumberofscales,andthenumberofineffectivescaleshadcomparativelyhighrepeatabilityat0.86,0.87,0.89,0.96,and0.91,respectively.CorrelationanalysisshowedthatSPPRwasgreatlyinfluencedbyRFSandbythenumberoffullseedspercone.Finally,weshowedthatSPIwasthebestpredictoroftheseed-producingabilityofclones.OurfindingswillassistseedorchardmanagersineffectivelypredictingandimprovingseedproductionofChinesepineseedorchards.
简介:GINGKOTECHNICALASSOCIATIONTheFirstChineseNon-TimberForestProductsTechnicalAssociationByMengYongqing;GaoFaquanTheFirstChinesen...
简介:在那里存在单个核苷酸多型性,G或T,在施主的一垒拼接蜡制的基因intron的地点1在米饭。为了学习在施主的一垒之间的关系,拼接蜡制的基因intron的地点1并且在米饭的直链淀粉内容,一步舞PCR方法被用来决定它是否在从14个区域的220个云南土生土长的米饭变化是G或T,云南的55镇/县省,并且的101个变化被PCR-Acc验证我方法。根据G/T多型性,,164个米饭变化显示出GG遗传型另外的56掉进TT遗传型,为74.5%所有测试变化和25.5%的财务分别地。当所有米饭变化被划分成indica和装饰用的梨树亚种时,80.5%indica米饭和67.0%装饰用的梨树米饭属于GG遗传型,这被发现。有GG遗传型的米饭变化有显著地更高的直链淀粉内容(18.95%平均)比那些与TT遗传型(都低于16%),但是有GG遗传型的33个米饭变化仍然有低直链淀粉内容从3.91%~15.93%,并且他们中的大多数来自奶妈在云南的西南的少数区域省。然而,在在indica和装饰用的梨树米饭之间的一样的GG或TT遗传型的吝啬的直链淀粉内容没有重要差别,建议那不同基因背景,indica或装饰用的梨树,没在直链淀粉内容上有效果。在遗传型和直链淀粉内容之间的关联的系数是0.733(P<0.01)。