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1.
南方丘陵山区农业生态环境的改善──以五华县新一村为例钟继洪,唐淑英,谭军(广东省土壤研究所,广州510650)ImprovemcntofAgro-ecologicalEnvironmentinHIillyandMountainousArcasofSouthChina:TakingXinyiVillageofWuhuaCountyasanExample¥.ZhongJihong,TangShuying,TanJun(GuangdongInsti-tuteofSoilScience,Guangzhou510650).ChineseJournalofEcology,1993,12(4):52-54.XinyivillagerepresentsatypicalhillyandmountainousareainGuangdongprovince.Asaresultofpro-longedextensiveexploitationofnaturalresources,itsagro-ecologicalenvironmentwasworsened.Throughharnessingthelandresourcesoft  相似文献   

2.
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   

3.
柞蚕林生物生产力和干物质转化研究   总被引:5,自引:0,他引:5  
柞蚕林生物生产力和干物质转化研究温达志,杨思河(中国科学院华南植物研究所,广州510650)(中国科学院沈阳应用生态研究所,110015)姜波(辽宁省蚕业科学研究所,凤城118101)BioproductivityandDryMatterTransferofTussah-FeedingOakForest¥WenDazhi(SouthChinaInsti-tuteofBotany,AcademiaSinica,Guangzhou510650),YangSihe(InstituteofAppliedEcology,A-cademiaSinica,Shenyang110015),JiangBo(InstituteofSericulturalScience,Fengcheng,LiaoningProvince113100).ChineseJournalofEcology,1993,12(1):5-10.ThepresentstudydealswiththebioproductivityanddrymattertransferofChineseTussah-feedingoakforestinhillyareaofe  相似文献   

4.
贵州省西北部“百里杜鹃林”的土壤生态条件   总被引:6,自引:0,他引:6  
贵州省西北部“百里杜鹃林”的土壤生态条件庞纯焘,宋铭荷,田光普(贵州教育学院,贵阳550003)(贵州农学院,贵阳550006)SoilEcologicalConditionsinthe"HundredLi(500m)AzaleaForcst"inNorthwestGuizhouProvince¥PangChuntao;SongMinghe(GuizhouEducationCollege,Guiyang550003),TianGuangpu(GuizhouAgriculturalCollege,Guiyang550006).ChineseJournalofEcology,1993,12(1):49-52。Thereisavastareaofazalea(Rhododendronspp.)forestinNorthwestGuizhouProvince,Atfloweringseasoninsummer,itbecomesaregionoftouristattraction.Thisregionissofascinatingthatpeoplecallit"HundredLi(500m)AzaleaFores  相似文献   

5.
中国南方低丘红壤区人工复合生态系统模式建造研究   总被引:2,自引:0,他引:2  
中国南方低丘红壤区人工复合生态系统模式建造研究徐盛荣,吴珊眉,李辉信(南京农业大学土壤农业化学系,210014)ModelingofArtificialComplexEcosysteminLow-hillyRedSoilRegionofSouthCbina¥.XuShengrong;WuShanmei;LiHuixin(DepartmentofSoilScienceandAgriculturalChemistry,NanjingAgriculturalUniversity).ChineseJournalofEcology,1993,12(2):39—40.Thispaperresearchesintothemodelingofartificialcomplexecosystemincorporatingcrop,fruit,forestandanimalhusbandrywithinacatchmentarea,whichisabasicunitoflowhillyregioninsouthChina.Themodelproducessignificantandcomprehensiveprofits.Fi  相似文献   

6.
庐山土壤微生物类群及酶活特性   总被引:3,自引:0,他引:3  
庐山土壤微生物类群及酶活特性陆杨森,熊金莲,张明(安徽农学院,合肥230036)MicrobialGroupsandEnzymeActivityinSoilofLushanMountain¥LuYangsen;XiongJinlian;ZhangMing(AnhuiAgriculturalCollege,Hefei230036).ChineseJournalofEcology1993,12(5):25-28。ThetotalnumberofmicrobesvariesindifferentsoiltypesofLushanMountain,beingthehighest(1.2×10 ̄9numbersgdrysoil)inmountainousyellowbrownsoil.Theecologialdistributionofvariousmicrobialgroupsindifferentsoiltypesissimllar。Bacteriaismorethanactinomycesandfungi.Nonitrifyingbacte-riacanbefoundInsollsofLushanMountai  相似文献   

7.
土壤微生物生物量周转的估算   总被引:44,自引:5,他引:39  
土壤微生物生物量周转的估算高云超,朱文珊,陈文新(北京农业大学生物学院,100094)EstimationforBiomassandTurnoverofSoilMicroorganisms¥GaoYunchao;ZhuWenshan;ChenWenxin(CollegeofBiologicalSciences,BeijingAgriculturalUniversity,Beijing100094).ChineseJour-nalofEcology,1993,12(6):6-10。Toobtainsomeinformationabouttransformationofmineralnutrientsbysoilmicroorganisms,wehavemeasuredtheamountandturnoverrateofsoilrnicrobialbiomassinno-tillage,directdrillingandplow-ingsoils.Microbialbiornassinno-tillagetopsoilis51.7%and26.0%higherthanthoseinplowinganddirec  相似文献   

8.
重庆地区“双千田”组合模式及效益分析郑钦玉,朱自均,胡声荣,袁可(西南农业大学,重庆630716)雷炎,李登国,程世宇,温永学,刘官堂(四川省巴县农业局)CombinationModelsof"TonGrainYieldingField"inChongqingAreaandTkeirBenefitAnalysis¥.ZhengQinyu;ZhuZhijun;HuShengrong;YuanKe(SouthwestAgriculturalUniversity,Chongqing630716),LeiYan,LiDengguo,ChengShiyu,WenYongxue,LiuGuantang(BaxianBureauofAgriculture,SichuanProvince).ChineseJoumalofEcolegy,1993,12(2):34—36.Inthelightoftheeffectsandproblemsofdevelopingwinter-croppingpaddyfieldsinChongqingareaandinordertosearchaftertheoptimummodelofref  相似文献   

9.
集约高产过程中土壤有机质动态初探   总被引:2,自引:0,他引:2  
集约高产过程中土壤有机质动态初探崔玉亭,韩纯儒(北京农业大学,100094)DynamicsofSoilOrganicMatter(SOM)intheProcessofAgriculturalIntensification¥.CuiYuting;HanChunru(BeijingAgriculturalUniversity,100094).ChineseJournalofEcology,1993,12(2):37—38.Inthispaper,thebalanceofsoilorganicmatter(SOM)intheprocessofagriculturalintensificationinChangzhouregionisstudiedandamedium-andlong-termpredictionofitsdynamicsismade。There-sultsshowthatduringthisprocess,thebalanceofSOMisgettingbetter,andafteramediumorlongpe-riod(e.g,10—20yeats),theSOMcontentcangett  相似文献   

10.
用Kunkel突变法,将单链尿激酶型纤溶酶原激活剂(scu-PA)cDNA基因中编码Pro155—Lys158的片段定点突变,并将此突变的scu-PA(tscu-PA)的cDNA克隆到表达载体pCM-β-neo中,与pCM-dhfr共转染CHO/DHFR-细胞.获得的稳定表达株在无血清培养基中24h的表达量为620IU/106细胞.经锌离子螯合Sepharose亲和层析得到tscu-PA纯品.SDS-PAGE显示tscu-PA分子量为53kD左右,与预期的结果相符.tscu-PA是由凝血酶激活而不是由纤溶酶激活,但激活后也能转变为双链分子(tcu-PA).tscu-PA仍保持了scu-PA的血纤维蛋白亲和性.酶动力学研究表明,激活后的tscu-PA水解S2444的Km和Kcat值与高分子量尿激酶(HUK)相似.体外溶栓实验结果表明,tscu-PA可以选择性地溶解富含凝血酶的血凝块,对贫凝血酶的血凝块作用不大  相似文献   

11.
鲁西北平原高产夏玉米生育模式董振国,鲁全国(中国科学院地理研究所,北京100101)DevelopmentMOdelofHighYieldingSummerCornonNortbwestSkandongPlain¥DongZhenguo;LuQuanguo(InstituteofGeography,ChineseAcademyofSciences,Beijing100101),ChineseJournalofE-colegy,1993,12(2):69-72.Erectandplanevarietiesofcornhavealeafinclinationof65°and50°andtheiroptimumplantingdensitiesare75000-82000and52500-60000stems·ha ̄(-1).Theleafareaindexatearsproutingstageandleafareaday(LAD)fortheformerarerespectively5.5-6.0and360-400,whilethoseforthelatterare3.5-4.0and260-300.TheL  相似文献   

12.
落叶松人工林土壤肥力变化的研究   总被引:10,自引:1,他引:9  
落叶松人工林土壤肥力变化的研究阎德仁(内蒙古林业科学研究院呼和浩特市010010)SoilFertilityVariationsUnderArtificialLarchForest¥.YanDeren(ForesiryInstiluteofInnerMongolia,Huhhot010010).ChiineseJournalofEcology,1993,12(3):8-10.Thispaperstudiesthevariationofsoilfertilityunderpureartificiallarch(Larixgmelinii)forestfromas-pectsofsoilhumusandenzymeactivity.Withincreasingageofforeststand,soilfertilitytendstode-crease,butsoilenzymeactivitytendstoincrease.Underforestwith20yearsofage,thecontentsofsoilhumus,humicacidandfulvicacidandtheratioofhumicacid  相似文献   

13.
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   

14.
太湖地区持续农业的发展战略与对策   总被引:1,自引:0,他引:1  
太湖地区持续农业的发展战略与对策杨林章,徐琪(中国科学院南京土壤研究所,210008)StrategiesforDevelopingSustainableAgricultureinTaiLakeRegion¥.YangLinzhang;XuQi(InstituteofSoilScience,AcademiaSinica,Nanjing,210008).ChineseJournalofEcology,1993,12(2):27—28.problemsandchallengesfacedbyagriculturaldevelopmentinTaiLakeregion,oneofthemostindustrial-izedregionsinChinaarediscussedandstrategiesfordevelopingitssustainableagricultureareproposedinthispaper.Keywords:sustainableagriculture,TaiLakeregion.1关于持续农业(sustainableagriculture)近年来在一些地区由于不合理的利用土地资源,过  相似文献   

15.
沈阳市东陵区丘陵坡地坡面太阳直射光的分布及其分析郭林海(中国科学院沈阳应用生态研究所,110015)DistributionofDirectSolarRadiationonHillySlopesofDonglingDistrictofShenyangMunicipalityandItsAnalysis¥GuoLinhai(InstituteofAppliedEcology,AcademiaSinica,Shenyang110015).ChineseJournalofEcology,1993,12(1):59-61.Basedonthelatest1:50000topographicmap,the1:100000slopegradationmapisdrawnoutandareacalculationismade.Thedirectsolarradiationintypicalsitesofthedistrictismeasuredandcalculated,andthevariationcurvesofannualfluxofdirectsolarradiationonvariousslopedirecti  相似文献   

16.
温度对麦长管蚜的影响   总被引:6,自引:0,他引:6  
温度对麦长管蚜的影响汪世泽,郝树广(西北农业大学陕西杨陵712100)EffectsofTemperatureonEnglishGrainAphid¥.WangShize;HaoShuguang(NorthwesternAgriculturalUniversity,Yangling,ShaanxiProvince712100).ChineseJournalofEcology,1993,12(3):53-56.InanexperimentalpopulationofEnglishgrainaphid,thedevelopmentrateV(t)ofalataeislowerthanthatofapterae,andtheV(t)of4thinstarofalataeistheIowest.Thealataeappearstobeabletotoler-ateawiderrangeoftemperature,butthesurvivalcurveisaffectedevidentlybyit.Atlowtemperature,thecurvedeclinesslowly,butathightemperature  相似文献   

17.
卢欣 《生态学杂志》1993,12(4):33-35
太岳山丘陵地带中国林蛙成体的肥满度和某些器官系数的季节变化卢欣(山西省生物研究所,太原030006)SeasonalVariationsofAdult’sCorpulenceDegreeandOthcrOrgans’IndicesofCommonFrogsinTaiyucMountainIIillyLands¥.LuXin(ShanxiInstituteofBiology,Taiyuan030006).ChineseJournalofEcolo-gy,1993,12(4):33-35.InvestigationswerecarriedoutfrornFebruary1989toApril1990inTaiyuemountainofShanxiprovince.Theadult'scorpulencedegreeofcommonfrogsishigherduringhibernationaidlowestinMayandJune,andthatofmalesissignlficantlyhigherthanfemales’(exceptinAugust).DuringApril-August,thecoef-  相似文献   

18.
用PAGEA活性染色分析了D.radiodurans过氧化氢酶(Cat)和起氧化物歧化酶(SOD)。2种同种异型D.radiodurans(R1和Sark)的Cat在电泳带型上存在差异,两者Kat均可分为A、B和C3条带,但各带所占比例明显不同,SOD的分析结果表明,D.radiodurans SOD以Fe^2+和Mn^2+离子的嵌合体形式存在,其中Fe-SOD成分占90%以上。PAGE活性染色法  相似文献   

19.
草基—鱼塘生态系统中能量转化与经济效益分析   总被引:4,自引:1,他引:3  
草基-鱼塘生态系统中能量转化与经济效益分析王德建,徐琪,刘元昌(中国科学院南京土壤研究所,210008)Grassdyke-FishpOndEcosystem──ItsEnergyConversionandEconolnicBenefit¥.WangDejian;XuQi;LiuYuanchang(InstituteofSoilScience,AcademiaSinica,Nanjins210008).ChineseJoumalofE-colegyl1993,12(2):29-30.Usingsimulationtestmethod,theenergyconversioninagrassdyhe-fishpondecosystemisstudied,andwithaproductivesystemascontrol,theeconomicbenefitoftheecosystemisanalyzed.Theresultsshow:1.theutilizationrateofsolarenergybygrassis0.6%,andtheconversionefficiencyfromgrasstofishis  相似文献   

20.
本通过扫描电子显微镜,对东北地区蒿属(Artemisia)植物,莳萝蒿组(A.sect.Absinthium DC),艾蒿组(Sect.Abrotanum Bess),艾组(Sect.Artemisia),龙蒿组(Sect.Dracumculus Bess),牡蒿组(Sect.latiobus Y.R.Ling)36种成熟代表植物叶表皮形态学特征进行了详尽的比较研究。其中表皮细胞大小、形状不等。  相似文献   

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