简介：这份报纸在稻田在Fuzhou区域印射上介绍ENVISATASAR数据申请，用在2005获得的多时间的ASAR双极化数据。为这里处理的ASAR数据的过程为反散射从振幅包括数据刻度，图象登记，点缀减小和数据格式的变换到dB。米饭的反散射与种阶段的米饭增加，它与另外的陆地封面不同。基于图象差别技术，6个计划与ASAR被设计不同时间并且为稻田印射的极化数据。在在米饭庄稼的早时期和成长或成熟的时期的图象之间的差别图象，比在在一样的日期的不同极化之间的那些差别图象对米饭抽取更合适。最精确的结果近来，米饭抽取基于在10月和8月获得的HH极化数据的差别被完成。因此为稻田印射，时间的信息比极化信息更重要。数据为印射的高精确性米饭在米饭的早成长的季节期间是很重要的。

简介：CH4emissionrateshavebeenmeasuredcontinuouslyfortheearlyriceof1988andlatericesof1987and1988duringentiregrowingseasonsinaricepaddyfieldinHangzhou,ZhejiangProvince,China,byusinganautomaticsamplingandanalyzingsystem.DuringmostpartsoftheseasonsCH4emissionratesshowedstrongdiurnalvariations.Bi-modepatternswiththehighestvalueintheafternoonandasecondpeakatmid-nightweregenerallyfoundfortheearlyrice,whilethehighestvalueswerealmostalwaysfoundinthenightforthelaterice.Bi-modepatternswithasecondpeakintheafternoonwerealsofoundduringthereproductivephaseofthelatericeplants.Thesediurnalvariationsmaybeexplainedbythediurnalvariationsofthesoiltemperatureandtheactivityofriceplants.Strongseasonalvariationswithonepeakinthetilleringstageandtwoduringthereproductivephaseofriceplantswereobservedforallthethreegrowingseasons.Theseasonalvariationsmaybeexplainedbytheactivityofriceplants,availabilityoforganicsubstratesinthesoil,andtheactivityofsoilbacteriarelatedtosoiltemperatures,FertilizationdidnotshowsignificanteffectsonthetotalseasonalCH4emissionsbutslightlychangedthepatternoftheseasonalvariationsoftheCH4emissionrates.Averagedoverthemeasuringperiodsand8spots,CH4emissionratesof7.8mgm-2h-1fortheearlyriceand28.6mgm-2h-1forthelatericewereobtained.Basedonthesemeasureddata,thetotalglobalemissionofCH4fromricepaddiesisestimatedtobeabout90Tg/yrrangingfrom70to110,accountingfor20%ofthetotalsourceofCH4.

简介：AsurveywascarriedoutatthelargestricecultivationareainPeninsularMalaysia,theMudariceagroecosystem.Themainobjectiveofthisstudywastodocumenttheoverallbiodiversityassociatedwiththisuniqueagroecosystembyusingacombinationofsamplingtechniquesinordertorecorddifferentgroupsoffaunaandflora.Thetotalnumberofbiotarecordedandidentifiedfromthericefieldecosystemduringthestudyperiodconsistedof46speciesofzooplankton,81speciesofaquaticinsects,5speciesofrodents,7speciesofbats,87speciesofbirds,11speciesoffishesand58speciesofweeds.Along-termstudyshouldbecarriedoutasmorespeciesareexpectedtoberecordedwhenmoreoftheMudariceagroecosystemareahasbeensampledtoobtainsufficientinformationontheMudariceagrobiodiversity.

简介：MethaneemissionfluxfromricepaddiesinGuizhouprovinceshowsobviousthreestagediurnalvariations;Itisrelativelylowfromthemorningtothenoon,thensuccessivelyincreasesintheafternoonandatnight,andfinallyfollowsagradualdecrease.Theδ13CvaluesoftracemethaneemittedfromricepaddiesinGuizhouProvincerangefrom-64.5‰to-54.1‰withanaverageof-60.7‰,veryclosetothereportedvaluesfromAmericaorKenya.

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简介：，并且因而在生物资源生产和呼吸上评估合成化肥N申请的影响份量上在各种各样的农业惯例下面在庄稼呼吸探讨织物N的角色，并且因此捕捞碳固定效率(Encf),壶和田间试验为从2001～2003收割系统的大米小麦的年度旋转被执行。壶实验的处理包括了化肥N申请，播种日期和种的密度。N申请的不同的率在田间试验被测试。静态的不透明的房间被用于采样气体。公司2排放被气体检测的呼吸用色层法分离。一个连续生物资源抓紧方法被采用决定庄稼自造营养物质的呼吸系数(R)。从壶实验的结果揭示了在R象R和织物N>=4.74N−1.45(R2=0.85，P<0.001)。从田间试验的大小和计算显示化肥N申请支持了生物资源生产而且增加了庄稼的呼吸不仅。进一步的调查证明碳损失的增加以由于化肥N申请的呼吸超过了网络碳获得的以未葬生物资源当化肥N在某个率上被使用时。因而，E当N申请率增加了，ncf衰退了。