简介：INa2005NewYorkTunesreporttitled:'ChinaIsBrightSpotinDarkReportontheWorld'sDiminishingForests,'Ms.MetteL.Wilkie,forestofficeroftheUNFoodandAgricultureOrganization(FAO),wasquotedassaying:'Asialostabout3,000squaremilesofforestayearinthe90s,butgainednearly4,000annuallysince2000.AlmostallofthatchangehasoccurredbecauseofChina'snewforestpolicy.'ThearticleconcludedthatwidespreadtreeplantinginChinahasslowedtherateatwhichtheearth'sforestedlandisdwindling.Sowhat'sbeenhappeningontheground?

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简介：ＣＨＩＮＡ＇ＳＡＧＥＮＤＡ２１ＣＨＩＮＡ＇ＳＡＧＥＮＤＡ２１ＷｈｉｔｅＰａｐｅｒｏｎＣｈｉｎａ＇ｓＰｏｐｕｌａｔｉｏｎ，ＥｎｖｉｒｏｎｍｅｎｔａｎｄＤｅｖｅｌｏｐｍｅｎｔｉｎｔｈｅ２１ｓｔＣｅｎｔｕｒｙＴｈｅｆｏｌｌｏｗｉｎｇａｒｅｅｘｃｅｒｐｔｓｆ...

简介：Facts&FiguresOnAugust26,1996,China’stotalvolumeofpublictelephoneexchangersexceeded100millionlines,surpassingGermanyandJapan,andcreatingtheworld’ssecondlargestphonenetworkbehindtheUnitedStates,asurgefrom17thin1985.In1998,thenumberoftelephonesubscriber...

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简介：Formanyyears,majorWesterncountrieshaveallalongheldthattherapidincreaseofitscomprehensivenationalstrengthoffersChinaanopportunity'tomakethecountryrichandthearmystrong'.Intheireyes,inthelate1990s,China'smilitaryexpenditurekeptgrowingbytwo-digitpercentage,theorientationofChina'smilitarymodernizationwasnotclear,and

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简介：<正>After15years’hardnegotiation,ChinafinallyenteredWTOin2001,whichmarkedChinawentintotheworldmarketeconomysystemaswellasattendanceintheworldwidecompetition.TheentrytoWTOwillnotonlyinfluenceeveryaspectofChinesepeople’slives.butsalsomakeChinatofacetheunprecedentedcompetitionoftheopenmarket.Fromthisnewjumping-offpoint,Chinawillbeabletopassthebirthpangstowelcomethenewflight.

简介：Ｃｈｉｎａ＇ｓＡｒｔｓａｎｄＣｒａｆｔｓＧｌａｎｃｉｎｇＢｅｈｉｎｄ，ｓｐｌｉｔｂｏｘｗｏｏｄｓｃｕｌｐｔｕｒｅＳｐｌｉｔｂｏｘｗｏｏｄｃａｒｖｉｎｇｉｓｎｅｗａｒｔｄｅｖｅｌｏｐｅｄｏｎｔｈｅｂｅｏｆｂｏｘｗｏｏｄｃａｒｖｉｎｇｂｙＧａｏＧｏｎｇｂ...

简介：The30-kt/aPXdemonstrationunitjointlydevelopedbySINOPECYangziPetrochemicalCompany,SPECandRIPPhasimplementedalltestitemsafterhavingsuccessfullysettingupitslastwing-theadsorptiveseparationtechnology.TherebySINOPEChasbecomeamajorpetrochemicalcompanycapableofprovidingpackagedaro

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简介：ThecropmodelWorldFoodStudies(WOFOST)wastunedandvalidatedwithmeteorologicalaswellaswinterwheatgrowthandyielddataat24stationsin5provincesofNorthChinafrom1997to2003.Theparameterizationobtainedbythetuningwasthenusedtomodeltheimpactsofclimatechangeonwinterwheatgrowthforallstationsusinglong-termweatherdatafrom1950to2000.Twosimulationsweremade,onewithallmeteorologicaldata(rainfed)andtheotherwithoutwaterstress(potential).Theresultsindicatethatthefloweringandmaturitydatesoccurred3.3and3daysearlierinthe1990sthanthatinthe1960sduetoa0.65℃temperatureincrease.Thesimulatedrainfedyieldsshowthattheaveragedroughtinducedyields(potentialminusrainfedyields)havedecreasedby9.7%overthelast50years.Thisistobecomparedwitha0.02%decreaseinyieldiftheprecipitationlimitislifted.Althoughtheprecipitationduringthegrowingseasonhasdecreasedoverthelast50years,thedroughteffectsontherainfedyieldsremainedtobepracticallyunchangedasthespringprecipitationdidnotdecreasemarkedly.

简介：在南部的中国的大米小麦旋转被经常的排干洪水的水政体和重氮(N)授精描绘。有进溶解的器官的氮的行为的研究的实质的缺乏(穿上)在强烈地管理的agroecosystem。在situ地实验3年的A被进行决定穿上沥滤并且它在6个连续大米/小麦季节由授精，灌溉和降水影响了的季节、每年的变化。在常规N实践下面(300kgN哈为米饭和200kgN的−1哈为小麦的−1)，季节的一般水准在leachate(100厘米土壤深度)穿上集中因为三个米饭和小麦季节是0.6–1.1和0.1–2.3mgNL−1,分别地。累积穿上沥滤被估计是1.1–2.3kgN哈为米饭季节和0.01–1.3kgN的−1哈为小麦季节的−1，与1.1–3.6kg的一个年度总数N哈−1。在大米季节，N化肥有小效果(P>0.05)在上穿上沥滤；降水和灌溉进口了3.6–9.1kgN哈−1穿上，它可以因此隐藏授精效果在上穿上。在小麦季节，N授精有积极效果(P<0.01)在上穿上。不过，这提升效果被可变降水强烈影响，它也带了1.8–2.9kgN哈−1穿上进地。尽管有到使用的化学N和大变化的一个很小的比例，走水路驾驶政体，穿上沥滤必然与另外的自然生态系统相比由于它的相对更大的数量在大米小麦旋转涉及综合的地N预算。

简介：Nitrogen(N)lossesfromammoniumbicarbonateorureaappliedtowheatandthenfollowedimmediatelybyirrigationwereinvestigated.Ammoniavolatilizationwasdeterminedbyamicrometeorologicalmethod(ammoniasampler),totalNlosswasestimatedbythe^15Nmassbalancemethod,anddenitrificationlosswasmeasuredbythediferencemethod(calculatedfromthedifferencebetweenthetotalNlossandammonialoss)andadirectmethod(measuringtheemissionof(N2+N2O)-^15N).Totalammonialossesfromammoniumbicarbonateandureain33dayswere8.7%and0.9%oftheappliednitrogen,respectively.ThecorrespondingtotalNlosseswere21.6%and29.5%,Apparentdenitrificationlosses(bythedifferencemethod)wereratherhigh,being12.9%fromammoniumbicarbonateand28.6%fromurea.However,noemissionof(N2+N2O)-^15Nwasdetectedusingthedirectmethod.

简介：Thelargemethanolsynthesistowerindependentlydevel-opedbyHangzhouLindaChemicalTechnologyEngineer-ingCompanyaftersigningacontractinApril2008willbeappliedatthe600kt/amethanolprojectatNinxiaBaota

简介：ＳｐｅｎｄｉｎｇｔｈｅＬｕｎａｒＮｅｗＹｅａｒ＇ｓＤａｙＷｉｔｈＨａｎＢｒｏｔｈｅｒｓａｎｄＳｉｓｔｅｒｓ￥ＰｈｏｔｏｓｂｙＴａｎｇＺｈａｏｍｉｎｇＨａｎＳｉｓｔｅｒＬｉＸｉａｏｆｅｎｇｇｒｅｅｔｉｎｇｈｅｒＴｉｂｅｔａｎＳｉｓｔｅｒＤａｗａＬｈａｍ...

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简介：ＴＨＥＳＣＩＥＮＴＩＦＩＣＷＡＴＥＲＭＡＮＡＧＥＭＥＮＴＩＮＷＩＮＴＥＲＷＨＥＡＴＰＲＯＤＵＣＴＩＯＮＡＮＤＩＴＳＥＣＯＮＯＭＩＣＢＥＮＥＦＩＴＳＩＮＮＯＲＴＨＣＨＩＮＡＡｎＳｈｕｎｑｉｎｇ（安顺清）ａｎｄＬｉｕＧｅｎｇｓｈａｎ（刘庚山）Ｒｅｓｅａｒ...

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