简介:Thispaperpresentsasystematicstudyandanalysisontheevaluationofwindpowersites,designparameters,thecostofdifferenttypeofwindmillsandtheirreasonableelectricityrates.Onthisbasis,wecompiledthetechnicalparame-terselectiontableofwindpowergenerator,whichisapplicabletotheInnerMongoliangrassland.
简介:<正>Mongolnationalitynowhasapopulationof4,806,849people,mainlylivingintheInnerMongoliaAutonomousRegion.Someothersliveinthenorth-eastandnorthwestpartsofChina.Mongolnationalitystarteditsdevel-opmentinEergunaRiverbasin.Inthe13thcentury,GenghisKhanledhisMon-goltribeunifiedallthetribesinMongoliaarea,andestablishedtheYuanDynasty.Mongolnationalityhasalonghistoryandmanylegendarystories.Inthepastthou-sandsofyears,Mongolpeoplelivedanomadiclife"migratingtowardswaterandgrass".InmostgrasslandareasofChina,therehavebeenfoottracksofMongolherdsmen.Theyarehonoredas"favoredsonsofthegrassland".
简介:有趣的结果可以由为某些种类在生态系统的结构和功能上把研究与生物多样性的相结合产生。蚂蚱生物多样性是草地生态系统的进化的结果;然而,它也影响在结构和那些生态系统的功能。我们在那里考虑是在草地生态系统和蚂蚱生物多样性的健康之间的一种靠近的关系。涉及这种关系的主要问题是可能的包括:(i)蚂蚱生物多样性和它的空间模式;(ii)草地生态系统的生态的过程上的蚂蚱生物多样性的效果;(iii)蚂蚱人口爆炸的生物多样性阀值;(iv)在蚂蚱生物多样性和影响草地生态系统的自然、人的因素之间的关系;并且(v)蚂蚱生物多样性和草地生态系统的健康。这些问题的答案可以为控制蚂蚱和设法的草地生态系统在中国的西方引起的灾难提供健全的库。在这篇论文,我们为蚂蚱生物多样性介绍了二个概念,那,“空间模式”和“生物多样性阀值”。在那些生态系统的健康上在草地生态系统的生态的过程和这个空间模式的效果上理解蚂蚱生物多样性的空间模式的行动是有用的,由于在中国的西方,草地是广阔的,蚂蚱是广泛地分布式的事实。而且,我们推断了在在各个的部件丰富的水平的变化蚂蚱生物多样性打字,这能在草地生态系统上做影响,因此,有可能是到为稳定性和那些生态系统的可持续性的蚂蚱生物多样性的阀值。
简介:在这份报纸,狼(犬属豺狼座)的食物习惯在内部蒙古被决定,用敲打声分析结果显示ungulates是主食食物项目(频率53.8%,相对生物资源85.2%)。在scats,动物由出现的频率是40.3%,并且75.7%由相对生物资源。与在Heilongjiang省的狼的食物习惯相比,狼在这个区域在猎物选择显示出一个不同模式。在这研究,我们估计食物项目的相对生物资源,和每个猎物的数量由一只狼摄取了,基于一个线性回归方程,y=2.76+0.02x(r=0.997),它在喂的试用被获得。狼是机会主义的食肉动物,这被建议。为狼保存和管理的一些建议被讨论。
简介:Boththeoreticalandfieldobservationswereexaminedtostudythecloserelationshipbetweensoildegenerationandtheevolutionofgrasslandvegetation.Ageneraln-speciesmodelofequalcompetitionunderdifferentdegreesofsoildegradationwasappliedtofielddatainordertoprobethedynamicprocessesandmechanismsofvegetationevolutionduetotheeffectsofthesoil'secologicaldeteriorationongrasslandvegetation.Comparisonsweremadebetweenthetheoreticalresultsandthepracticalsurveyswithsatisfactoryresults.
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。
简介:TheSimplifiedSimpleBiospheremodel(SSiB)isvalidatedinoff-linesimulationsagainstfieldmeasurementsinthesummerof2001fromtheChinaHeavyRainfallExperimentandStudy(CHeRES)overagrasslandsitelocatedinthelowerreachesoftheYangtzeRiver.Wheninitializedanddrivenbytheobservedatmosphericforcing,themodelreproducedtheobservedsurfaceheatfluxesandsurfaceskintemperaturerealistically.Themodelwasalsoabletowellsimulatethevariationofsoilwatercontent.Thesensitivityexperimentsfoundthattheleafreflectancewasthemostsignificantparameterinimprovingtheestimationofsurfacealbedoduringbothwetanddryperiods.Thisstudysuggeststhatthemodeliscapableofsimulatingthephysicalprocessesandofassessingtheimpactofbiophysicalparametersthatrelatetoland-atmosphereinteractionsovertheeasternAsianmonsoonregions,whichiscrucialformesoscaleatmosphericmodels.
简介:GrasslandismostimportantinChinaduetoitsmulti-functions.However,about90%oftotalusablegrasslandinChinahasbeendegradedandthedegradationexpandsatarateof2millionhaperyear.WesternChinacovers6.12millionsquarekilometersand63.8%ofthetotalnationalareawithadistributionof50minoritynationalitiesand75%oftheminoritynationalpopulation.Ecologicalenvironmentthereisveryvulnerablewithmorethan90%areasoftheannuallyincreaseddegradationtakingplace.Underthecurrenttenurearrangement,theindividualherderhouseholdsbecomethemainanddirectusersofgrassland,theirdecision-makingongrasslandmanagementmayhavecrucialimpactonecologicalenvironmentaswellastheirlivelihoods.Thus,itisnecessarytoexaminethedeterminantsoftheirgrasslandmanagementbehaviors.Thisstudyapplies231householdfielddatafrom6provincesofwesternChinaanduseseconometricmodelstoexplorethemajorconstraintsforrestrictingtheherdhouseholds’grasslandmanagementbehaviors.Mainresultsshowthatunderthecurrenttenureandothergovernancemeasures,institutionalfactors,marketpriceandherder’sfarmandhousehold’scharacteristicsaffectthegrasslandmanagementbehaviors.