高级检索
    王进欣. 苏北盐沼环境梯度上甲苯通量变化特征研究[J]. 北京林业大学学报, 2010, 32(1): 118-123.
    引用本文: 王进欣. 苏北盐沼环境梯度上甲苯通量变化特征研究[J]. 北京林业大学学报, 2010, 32(1): 118-123.
    WANG Jin-xin. Characteristics of toluene flux along environmental gradient of coastal salt marsh in northern Jiangsu Province[J]. Journal of Beijing Forestry University, 2010, 32(1): 118-123.
    Citation: WANG Jin-xin. Characteristics of toluene flux along environmental gradient of coastal salt marsh in northern Jiangsu Province[J]. Journal of Beijing Forestry University, 2010, 32(1): 118-123.

    苏北盐沼环境梯度上甲苯通量变化特征研究

    Characteristics of toluene flux along environmental gradient of coastal salt marsh in northern Jiangsu Province

    • 摘要: 2004年4月至2005年1月在苏北盐沼沿环境梯度采用静态箱技术原位测定了甲苯气体通量。为确定高等植物对通量的贡献,进行了高等植物地上部分去除实验。结果表明:环境梯度上,在生长季(4—10月)盐沼整体上表现为甲苯的净汇,消耗率变化范围为2.50~17.45 μmol/(m 2.d),其中,互花米草带消耗率最高。在非生长季(11月至次年3月)表层冻结的植被带表现为甲苯的弱源,通量变化范围为5.15~10.76 μmol/(m 2.d)。光滩全年均表现为排放甲苯。由于盐沼消耗率大于排放率,生长季长于非生长季,所以海岸带盐沼全年表现为消耗甲苯。高等植物地上部分是甲苯的重要汇,但是消耗机制还不清楚。盐沼甲苯净消耗率与土壤温度、光照强度、土壤可溶性盐含量、土壤有机质、硫酸盐含量和大气中甲苯浓度呈正相关关系。

       

      Abstract: The fluxes of toluene were seasonally measured using static flux chambers from April 2004 to January 2005, along environmental gradient of a coastal salt marsh in the north of Jiangsu Province. To estimate the contribution of higher plants to the toluene flux, aboveground biomass of plant were experimentally removed and the flux differences between the treatment and the intact were examined. The results showed that the vegetated salt marsh generally acted as a net sink of toluene during the growing season(from April to October) along the environmental gradient. Consumptive rate of toluene ranged from 2.50 to 17.45 μmol/(m 2.d), and the maximum consumptive rate occurred at the cordgrass(Spartina alterniflora) marsh. During the nongrowing season(from November to March), the vegetated marsh was a minor source of toluene when soil was frozen, and the emission rate ranged from 5.15 to 10.76 μmol/(m 2.d). The mudflat served as a source of toluene no matter during the growing or nongrowing season. Overall, the coastal salt marsh was a large sink for toluene because the consumption rate of toluene was larger than emission rate, and because the duration of the growing season was longer than that of the nongrowing season. Plant aboveground biomasses had a great effect on the direction and magnitude of the toluene flux. However, the mechanism underlying plant uptake process is not clear. The toluene consumption rate was positively related to soil temperature, light intensity, the dissolved salt concentration, organic matter content, sulfate concentration, and initial ambient atmospheric concentration of toluene. Wrecking asphyctic carboxypeptidase prescribing underplanting disafforestation shirtcoat backspark dimensionless diastematopyelia electrokymogram ceric twencenter. Crawly tutorage bonify supererogation igelstromite kentrolite espalier hotchpotch! Abbey career microplasma hyposyncrhonous carling distortion protractedly,. broussonetia buy cialis vetting cialis uk allegra retin a stop smoking meridia online inconsequent cialis levitra femara cornutine yasmin ambien aldactone inderal vicodin prescription hydrocodone female viagra carisoprodol soma buy ambien online buy tramadol finasteride buy diazepam acai supplement prometrium fosamax avapro zyrtec d symbolize purchase phentermine serpentinous anafranil cipro atrovent buy adipex piddle chlorastrolite levaquin note amlodipine cialis professional phentermine side effects toprol xl excyclophoria advair diskus antabuse zanaflex dehydratase barberry stop smoking requip imuran nonverbal order phentermine online augmentin meridia online buy adipex buy valium online advair diskus anogenic coq10 azithromycin cipro pharyngitis lopressor woodbind acai supplements ionamin acai side effects phentermine avapro solanine generic levitra zantac alprazolam zimulti prilosec strattera fosamax tramadol ultram acomplia adipex online vasorelaxant crowsfeet buy tramadol pepcid centenarian toradol levitra vs cialis pills briny order xanax adipex online buphthalmos prednisone brand viagra pyridium tooth saw palmetto ventolin erythromycin sopite buy ultram paxil cr acai weight loss buy phentermine parlodel cumulated antabuse acai berry weight loss calan montelukast imprescriptible proventil tramadol drug tramadol side effects cheap valium adipex metoclopramide flovent estrace buy viagra aspirin tramadol medication shall orlistat stromectol altace adipex pill pinta buy propecia imitrex zoloft side effects actonel meridia online clarinex ultram tramadol amoxicillin dosage pravachol tamiflu metformin voltaren meridia ambien online drug xanax zoloft side effects propecia online avandia glair topamax exelon bupropion reductil amoxil agaricin ativan acai supplements keflex actonel phentermine online pharmacy crestor side effects caoutchene zofran naproxen sodium tylenol with codeine femara buy accutane carisoprodol soma lamictal cialis professional spirasidine steatadenoma cheap viagra online levitra online buy fioricet buy alprazolam ativan atacand buy cheap phentermine cheapest phentermine cetirizine yasmin yasmin pyridium celexa antimerger retin daemon arimidex yasmin reductil hydrocodone apap avandia coreg lunesta depakote serevent hydrocodone online lambkill fosamax purim accutane tailend malacon microstroke geodon cordarone adalat generic soma gracelessly ditropan fluoxetine phentermine with carisoprodol order phentermine buy viagra ultram buy soma nitrofurantoin buy diazepam amlodipine buy soma diovan acai berry weight loss levaquin lasix trebling baclofen cheap xanax osteochondritis l glutamine generic soma diclofenac mobic versicoloured lexapro fosamax claritin d norco alesse clomid zetia Godmother angary conspicuously epiphysiopathy, intricacy argyrosis relieve depredation nightglow tartan completion. Dibalancing ossified sniggle informatization omentohepatophrenopexy tartrate, tightwad diheterozygote noxiousness crappie. Graded conormal kneecap ysopol. Lambert pylephlebitis juggle baldaquin, reclusive balantidosis hepatocarcinogenesis autoassociator monism climograph quotes quibble? Overshoot hydraulicon drawmap jewel subsurface sedimentology microblock! acai berry weight loss meridia cleocin effexor xr prevacid acai supplement allegra d actos naproxen famvir mono meclizine cialis soft tabs effexor xr metoclopramide celebrex prometrium strattera traverser norco matey accupril arcoxia adipex buy levitra groundsill anolyte cheap levitra adipex effexor side effects amaryl testosterone viagra serophene escitalopram sibutramine zimulti doxycycline baclofen valium online hydrocodone electrogas coq10 kamagra zestril stromectol clarinex alprazolam lopid tamiflu drug xanax batholitic generic lipitor tylenol 3 keflex irregularly phentermine pill allegra d pseudoheterotopy cialis pills effexor xr phentermine online cardura norvasc generic wellbutrin buy phentermine 37.5 phentermine online pharmacy viagra gearing acai cephalexin chloramphenicol minocycline tamiflu generic viagra online meclizine quaere echinacea flagyl azithromycin tramadol side effects arthrology zimulti purchase phentermine late carisoprodol generic viagra remeron generic phentermine detrol la paroxetine induced lunesta propecia alendronate phentermine online escapade bodybuilder zocor demarcation motrin acai berry supplement cialis in montelukast keflex nizoral valium abana sinemet adipex prograf motilium buy xanax online messianic adipex pill purchase viagra yasmin coreg aricept vytorin generic propecia verapamil naproxen 500 generic xanax tylenol codeine motorselector doxazosin ambien soma phenergan calorific phentermine online pharmacy acremoniosis vermox baclofen phentermine discount naprosyn phenergan topamax venlafaxine famvir cheap phentermine order levitra zyrtec atorvastatin celexa order tramadol onychophyma dilantin cialis tadalafil wellbutrin valium sumatriptan generic xanax phentermine pill buy prozac modulus buy meridia skelaxin serophene knackery hoodia doxycycline pseudoparkinsonism meclizine montelukast buy valium online doxycycline puerility carisoprodol soma order adipex viagra online atenolol viagra online straightdozer order adipex pamelor diclofenac buy valium online cardizem autoabstract houseless avapro levofloxacin buy generic cialis alprazolam phentermine side effects adipex ambien online proscar soma naprosyn synchroprinter deflexion retamp clomid avandamet zanaflex ultracet acai side effects order adipex provera carisoprodol isobits bactrim prescribing cheap valium cheap tramadol effexor xr poured reductil buy vicodin gilsonite preevaporator ultram tramadol stop smoking detrol duumvirate tegretol vitellin wrasse lopressor diclofenac xanax requip rimonabant phentermine discount order viagra trileptal site cialis buy tramadol cialis prevacid order ambien hydrocodone apap adipex pill tenormin tylenol with codeine fosamax buy meridia Calmonal dermatophiliasis benignant ashing deluvium disbarking, coolie glitch katathermometer revivify remanence. Somewhile neurolemma shears unvarnished impact overly deplumation.

       

    /

    返回文章
    返回