首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 511 毫秒
1.
江苏宝华山栎林生态系统凋落物及其元素动态   总被引:2,自引:0,他引:2  
江苏宝华山栎林生态系统凋落物及其元素动态梁珍海(江苏省林业科学研究所,南京211153)LitterfallanditsElementsDvnamicsinQuerousvariabilisEcosysteminBaohuashanofJiangsuProvince¥LiangZhenhai(ForestryResearchInstituteofJiangsuProvince,Nanjing211153).ChineseJournalofE-coloLry,1993,12(5):17-20。ThispaperpresentssomeaspectsofthecomprehensiveresearchonaQ,variabilisecosysteminBao-huashanNaturalReserveinJiangsuProvince,Theannuallitterfallamountis5359.5kg.ha ̄1inthise-cosvstemfrom1989to1990.withtwopeaksappearinginMayandNovernber.Thecontantsoffiveele-ments(N,P  相似文献   

2.
朱华  王洪  李保贵   《广西植物》1999,19(4):337-338
勐腊锡叶藤 新种 图1TetraceraxuiH-ZhuetH-Wang,sp-nov-pl-AffinisT-scandenti(Linn-)Merr-sedinflorescentiisminoribus,paucifloris,sepalismajoribus1-5cmlongisinstatufructuextusdensevillosis,staminibus1cmlongis,capsulismajoribushirsutis,1-5~2cmlongis,1-2~1-5cmlati…  相似文献   

3.
90年代农村发展与农业生态研究彭廷柏(中国科学院长沙农业现代化研究所,410125)RuralDevelopmentandAgro-ecologicalResearchin1990s¥.PengTingbai(ChangshaInstituteofAgri-culturalModernization,AcademiaSinica,410125).ChineseJournalofEcolegy,1993,12(2):2-3.InordertoapproachtherelatedproblemsofChina’sagro-ecologicalresearchin1990s,thispaperana-lyzedthenewtrendsofstructuralchangesinruraleconomyandagro-ecology.underconditionofsocialistmarketeconomyexpoundedsomeviewpointsonthecoordinativedevelopmentofagro-ecologyandagro-economy,thestrengtheningofabsorbi  相似文献   

4.
浸润垄作稻田土壤生态系统的研究   总被引:7,自引:0,他引:7  
浸润垄作稻田土壤生态系统的研究魏朝富,高明,车福才,邓春(西南农业大学土化系重庆630716)AStudyonInfiltrated-RidgedPaddySoilEcosystem¥.WeiChaofu;GaoMing,CheFuchai;DengChun(SouthwestAgriculluralUniversity,).ChineseJournalofEcology,1993,12(3):26-30;Thispaperdealswichaninfiltrated-ridgedpaddysoilecosystemwhichisconstructedbyridgingandcon-tinuousfurrowinfiItratiOnirrigation,ComparingwithlevelinfiItratedpaddysoilecosystem,thisecosys-temhascoexistedgas-liquid,gas-solidandliquid-solidinterfaces,enlargessoilsurfaceby38%andincreasescuItivatedlayerby5-10cm.  相似文献   

5.
改变林分结构提高松林对松毛虫的自控能力   总被引:1,自引:0,他引:1  
改变林分结构提高松林对松毛虫的自控能力周石涓,彭建文(湖南省林业科学研究所,长沙410004)ForestStructuralModificationinImprovingSelf-regulatingCapabilityofPineForestAgainstDen-drolimusPuncts¥ZhouShijuan;PengJianwen(HunanInstituteofforestryscience,Changsa410004).Chi-neseJournalofEcoloLyy,1993,12(5):9-12。Thispaperdescribesthesignificantchangesofforestbiologicalstructcure,succeedingfromsparsepurepineforesttopine-shrubmixedforestandtomulti-layerpine-broadleavedmixedforestcommunityduringthreedecadesofclosingmountainsandrearingforests。TheNaturalparasiti  相似文献   

6.
洞庭湖滨湖湿地平原农村生态工程初步研究严斧,游有林,刘劲凡,卢源德,周为民(中国科学院生态环境研究中心系统生态室沅江课题组,大庸市416600)RuralEcologicalEngineeringonWetlandPlainofDongtingLakeside¥.YanFu;YouYoulin;LiuJinfan;LuYuande;ZhouWeimin(YuanjiangResearchGroup,ResearchCenterforEco-environmentalScience,A-cademiaSinica,Dayong416600).ChineseJournalofEcology,1993,12(2):45—48.AccordingtothemaintypesofresourcecombinationsonwetlandplainofDongtinglakeside,severaleco-logicalengineeringsincludinglakesidereed-forest,lowlandrice-fish-ramie,rnanure-forage-fuel,fish-pig-duckandf  相似文献   

7.
西藏生态农业探讨刘明允,王德亭(西藏农牧学院,八一850400)EcologicalAgricultureinTibet¥.LiuMingyun;Wangbeting(TibeiCollegeofAgricldturalandAnimalHusbondry,850400).ChineseJournalofEcology,1993,12(3):73-75.Inthispaper,fourbasicprinciplesconcerningtheconservationofecologicalagricuItureinTibetareputforwardandsomecharacteristicsandoperatedagrotechniquesofTibe'secologicalagricuIturearesumma-rized.Basedonthese,agro-ecosystemsinTibetareclassifiedintotwogroups,i.e.,temperate-humidforestry-agriculture·animalhusbandrycombinedecosystemandarid-  相似文献   

8.
非致病微生物在植物—病原菌协同进化中的作用   总被引:2,自引:0,他引:2  
非致病微生物在植物-病原菌协同进化中的作用单卫星(西北农业大学植保系,陕西杨陵712100)TheRoleofNon-pathogenicMicroorganismsinPlant-pathogenCoevolution¥ShanWeixing(Depart-mentofPlantProtection,NorthwesternAgriculturalUniversity,Yangling,Shaanxi712100).ChineseJournalofEcology,1993,12(6),54-59.Inviewofpresentproblemsassociatedwithplantdiseasecontrol,coupledwithrecentadvancesinbiolog-icalcontrolofplantdiseasesandplant-pathogeninteractions,theauthorpointedouttheimportanceofnon-pathogenicmicroorganismsinhabitingplantsurfacesinregulationofplant-pathoge  相似文献   

9.
黄嫔 《古生物学报》1995,34(2):171-193
描述了孢粉化石9新种、1未定种。根据孢粉属种及其含量变化自下而上建立3个孢粉组合:1)Osmundacidites-Dictyophyllicites-Cycadopites组合;2)Cyathidites-Neoraistrickia-Quadraeculina组合;3)Cyathidites-Concavissimisporites-Quadraeculina组合。第一组合产自ZK203孔煤窑沟组第一岩性段,时代暂定为早侏罗世;第二组合产自ZK203孔煤窑沟组第二岩性段至第四岩性段,时代定为中侏罗世早期;第三组合产自ZK282孔煤窑沟组第五岩性段和ZK42孔三间房组,其时代定为中侏罗世晚期。  相似文献   

10.
钱义咏   《广西植物》1999,19(4):339-340
澜沧蔗茅 新种 图1ErianthuslancangensisY-Y-Qiansp-nov-SpeciesaffinisE-rufipilo(Steud-)Griseb-sedligulis2~3mmlongis,apiceobtusis,paniculis13~22-nodis,ramis1~9cmlongis,spiculis3-6~4mmlongis,glumisprimisnervis4-raro2~3,lemmatibussecundis1-1~1-3mm1ongis,dentibu…  相似文献   

11.
从石竹科植物多荚草(Polycarpon prostratum(Forssk.)Aschers.et Schwein.ex Aschers)中分离得到3个新的柴胡皂甙类化合物:prostratoside A ̄C(1 ̄3)。它们的结构通过波谱方法分别鉴定为:3-O-{β-D-xylopyranosyl-(1→2)-β-D-glucopyranosyl-(1→4)-「β-D-glucopyranosy  相似文献   

12.
福建中亚热带村级农业生态经济类型的成因与发展机制研究林文雄,吴志强,林群慧,郑世庆,王松良,梁义元(福建农学院,福州350002)ContributingFactorandDevelopmentMecbanismofRuralAgro-ecolomicTypesinMid-subtropicalRegionofFuJianProvince¥.LinWenxiong;WuZhiqiang;LinQunhui;ZhengShiqing;WangSongliang;LiangYiyuan(FujianAgriculturalCollege,Fuzhou350002).ChineseJournalofEcology,1993,12(2):66-68.Usingsystematicanalysismethodtheauthorsstudiedthestatuecharacteristicsandtheirvariationpat-ternsofruralagro-ecolomictypeinmid-subtropicalregionofFujianprovince.11tapesofsystemstructurean  相似文献   

13.
农业生态学在我国发展的回顾与展望   总被引:5,自引:0,他引:5  
农业生态学在我国发展的回顾与展望骆世明(华南农业大学,广州510642)ReviewandPerspectiveonDevelopmentofAgroecologyChina.¥LuoShiming(SouthChinaAgriculturalUniversity,Guangzhou510642).ChineseJournalofEcology,1993,12(2):4-6.Inlastdecade,greatprogresshasbeenmadeintheteachingandresearchofagriculturalecologyinChi-na,butsomeobstaclesstillexistonhowtounderstandagroecology.Ifwecanrecognizethesocialde-mandofagroecologyanditspositioninagriculturalscienceandpayattentiontothedescription,assess-ment,experimentandanalysisofagroecosystemmodels,thequanti  相似文献   

14.
杨树护田林带疏透度模型及应用   总被引:3,自引:0,他引:3  
杨树护田林带疏透度模型及应用张纪林,吕祥生(江苏省林业科学研究所,南京211153)(江苏省农林厅林业局,南京211153)PorosityModelofPoplarFarmlandShelterbeltandItsApplication¥ZhangJilin(Forestryscienceandtech-nologyresearchInstituteofJiangsu),LuXiangsheng(ForestryBureau“ofJiangsuProvince).ChineseJournalofEcology,1993,12(5):56-60。Inthisarticle,theauthorsatfirstmadethree-principledselection,partialcorrelation,bestmulti-prin-cipleregressionselectloninsequence,Secondlyonthebasisofresidualanalysis,theauthorsmadetestofhighleveragecase,influencecaseandoutlieronsample  相似文献   

15.
植物化学生态研究促进生态农业建设   总被引:7,自引:0,他引:7  
植物化学生态研究促进生态农业建设祝心如(中国科学院生态环境研究中心,北京100085)PhvtochemicalEcologlcalResearchandEco-AgriculturalConstruction¥.ZhuXinru(ResearchCenterforEco-enuivironmentalSciences.AcademiaSinica,Beijing100085).ChineseJournalofEcology,1993,12(4):36一40。Phytoallelopathyaffectsthefunctionanddynamicsofagro-system,andphytochemicalecologicalre-searchwillbenefittheconstructionofeco-agriculture,whichdisplaysinthefollowingmainaspects:weedcontrol,establishmentofreasonalcroppingsystem,implementationofcropgenicoptimization,re-ductionofap  相似文献   

16.
Celluloseisthemostabundantnaturalbiopolymer.Howtoutilizeorhydrolyseitisaveryimportantprob-leminthefieldofbiotechnology.Sixstrains(JT)ofthermophilicanaerobicandcellulyticbacteriawereiso-latedfromcamelfeces,compost,soilandhotspringwa-terinJapan.Thesest…  相似文献   

17.
云衫针层孔菌化学成分的研究   总被引:7,自引:1,他引:6  
从云衫针层孔菌Phellinus yamanoi(Tamz.)shaw分离得到12个化合物,借助光谱分析鉴定为:8,11,13-abietadien-18-oic acid(1),1,2-benzenedi-carboxylic acidbis(2-ethyl-hexyl)ester(2),ergosterol peroxide(3),ergosta 7,22(E)-iden-3-ol(4),ergosta 7,22(Z)-dien-3-ol(5),octadecanoic acid-1,3-propanediyl ester(6),octadecanoic acid(7),8(19),14-labdadien-13-ol(8),ergosta-4,6,8(14),22-tetraen-3-one(9),化合  相似文献   

18.
中国中亚热带地区引种玉米的气候生态适宜性分析翟玉顺,章熙谷(中国科学院南京土壤研究所生态室,210008)(南京农业大学农学系,210014)Eco-climaticSuitabilityofIntroducedCorninMidSub-tropicalRegionofCbina¥.ZhaiYushun(InstituteofSoilScience,AcademiaSinicaNanjing,210008),ZhangXigu(NanjingAgriculturalUniversity,Nan-jing,210014).ChineseJournalofEcology,1993.12(2):73-75.Throughanalyzingtheecologicalsuitabilityofintroducedcorntosunshine-temperature-precipitationanditsclimaticpotentialproductivityinmidsub-tropicalregionofChina,itisfoundthatAprilandthefirstandsecondten-daysofM  相似文献   

19.
郑淑英 《古生物学报》1995,34(6):722-730
描述的介形类化石标本采集于新疆塔里木盆地库车和喀什两地区,其中,齐古组产Darwinula-Timiriasevia组合,恰克马克组产Darwinula-Bisulcocypris为代表的介形类化石组合,其时代前者为晚侏罗世,后者为中侏罗世;俄霍布拉克组和克拉玛依组产以Bisulcompris-TungchuaniaDarwinula为代表的组合,其时代为早-中三叠世。  相似文献   

20.
部分裸子植物叶片总蛋白分析   总被引:1,自引:0,他引:1  
王艇  苏应娟  黄超  朱建明   《广西植物》1999,19(4):367-372
采用SDS- PAGE 技术, 分析了红豆杉科(Taxaceae) 植物南方红豆杉( Taxus chinensisvar- mairei (Lemee et Levl-) Cheng et L-K-Fu) 、穗花杉( Amentotaxus argotaenia (Hance) Pil ger) 、云南穗花杉( A- yunnanensis Li) 、白豆杉( Pseudotaxuschienii(Cheng) Cheng) 以及三尖杉科(Cephalotaxaceae) 、植物三尖杉( Cephalotaxus fortunei Hook-f-) 、粗榧( C-sinensis (Rehd-etWils-) Li) 、海南粗榧( C-hainanensis Li) 、篦子三尖杉( C-oliveri Mast-) 和罗汉松科(Podocarpaceae) 、植 物罗汉松 ( Podocarpus macrophyllus ( Thunb- ) D-Don) 、鸡毛 松( P-imbricatus Bl-) 、竹柏( P- nagi(Thunb-) Zoll) 、陆均松( Dacrydium pierrei Hickel) 共12 种植物的叶片蛋白, 在蛋白质水平上采用  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号