Ib tsob ntoo txawv ntawm lwm cov nroj tsuag los ntawm nws lub cev. Ib tug complex sab hauv lub neej yog muab zais nyob rau hauv lub inconspicuous bark. Zoo siab tos txais nej txhuam leej los rau koosloo_Ulias Channel nkag mus nias Subscribe nawb.
Lub cev ntoo zoo li cas?
Ib tsob ntoo lub cev muaj tsib txheej: tawv, bast, cambium, sapwood thiab heartwood. Cov tawv ntoo tiv thaiv tsob ntoo, cov bast thauj cov as-ham, cambium txhawb kev loj hlob, sapwood ua dej, thiab cov ntoo ua kom ruaj khov.
Lub cev ntoo zoo li cas?
Cov qauv ntawm tsob ntoo lub cev muaj xws litsib txheej tawv, bast, cambium, sapwood thiab heartwood. Txhua txheej ua ib qho tseem ceeb rau kev loj hlob ntawm tsob ntoo.
Nyeem vim muaj cov ntaub ntawv nthuav dav kom paub txog yuav ua li cas txhua tus txheej txheem ntoo ua haujlwm.
Cov tawv ntoo hauv tsob ntoo yog dab tsi?
Cov tawv ntoo tiv thaiv tsob ntoo los ntawmkev cuam tshuam ib puag ncig, xws li tshav ntuj hnyav, Frost, tshav kub lossis kab kab. Ib daim tawv ntoo tsim txheej txheej sab nraud ntawm cov tawv ntoo thiab yog tsim los ntawm cork, cov ntaub so ntswg tuag.
Bark raws li kev txheeb xyuas feature
Koj tuaj yeem paub tsob ntoo yooj yim los ntawm kev ntxhib los mos ntawm nws cov tawv ntoo. Muaj peb hom tawv ntoo:
- Striped bark with distinctive longitudinal stripes, typical of a tree of life (Thuja).
- Scaly bark, yam ntxwv ntawm cov ntoo feem ntau, xws li maple (Acer) lossis ntoo thuv (Pinus).
- Netted bark, zoo ib yam li ib tug striped bark nrog ib tug network ntawm torn bark nyob rau hauv qhov chaw, zoo li ib tug sessile Oak (Quercus petrea).
Dab tsi yog raffia nyob rau hauv tsob ntoo trunk qauv?
Bast is acov ntaub so ntswg nyob ntawm cov tawv ntoo thiab cambium. Qab zib tebchaw tau los ntawm photosynthesis nyob rau hauv tsob ntoo crown accumulate nyob rau hauv cov ntaub so ntswg bast. Los ntawm qhov ntawd, cov as-ham tseem ceeb raug xa mus rau nplooj nplooj, cov lus qhia ceg, cov hauv paus hniav lossis lwm qhov chaw ntawm tsob ntoo loj hlob.
Raffia ntaub yog mos, moist thiab kuj luv luv. Tuag ua dab mam los ua cork and bark.
Cambium nyob rau hauv tsob ntoo lub cev yog dab tsi?
Cambium yog txheej nyias ntawm cov hlwb thiab muaj lub luag haujlwm rauthickness loj hlob ntawm tsob ntoo pob tw. Tias yog vim li cas cambium tseem hu ua txheej loj hlob ntawm tsob ntoo:
- Cambium cov ntaub ntawv bast (phloem) rau sab nraud thiab ntoo (xylem) rau sab hauv.
- Nyob rau lub caij nplooj ntoos hlav, cambium tsim lub teeb thaum ntxov ntoo, ua raws li tsaus nti, denser ntoo tag nrho ntawm lub xyoo.
- Cells nyob rau hauv cov ntoo thaum ntxov muaj ntau voluminous kom tsob ntoo thiaj li sai tau cov dej thiab as-ham rau lub crown.
- Tub latewood yog siv rau stability.
- Thaum lub cev raug mob los ntawm ib puag ncig cuam tshuam los yog qhov txhab tom qab txiav ntoo, Cambium saib xyuas qhov txhab zoo.
Sapwood nyob rau hauv tsob ntoo trunk qauv yog dab tsi?
Sapwood yog cov hluas, ua haujlwm zoo heevcov ntaub so ntswg ua haujlwmuas thauj cov dej thiab cov khoom noj rau lub kaus mom. Tau ntau xyoo, sapwood poob nws qhov tseem ceeb, tawv, tuag thiab ua siab tawv.
Dab tsi yog lub plawv ntawm tsob ntoo lub cev?
Nyob rau hauv tsob ntoo trunk tsim, ntoo ntoo yog lub load-bearing caij thiab tseem hu uatxhawb lub moj khaum. Thaj chaw no raug kaw vim tsis muaj kev thauj dej. Heartwood muaj feem ntau ntawm koob-zoo li cellulose fibers. Hauv ntu ntu ntawm lub cev, cov ntoo tuaj yeem pom tau tias yog qhov tsaus ntuj, sab hauv.
Tip
Natural treasure tree trunk bark
Bark ua tiav ntau yam haujlwm hauv lub vaj zoo siab. Thaum ua tiav rau hauv bark mulch, pieces ntawm bark muab lub txaj zoo-groomed tsos, suppress annoying nroj tsuag thiab yog ib qho tseem ceeb raws li ib tug natural txoj kev nto. Yog hais tias bark yog composted, cov as-ham-nplua nuj bark compost yog tsim rau ornamental thiab chav ua noj vaj. Raws li kev hloov pauv rau peat, bark humus yog qhov tseem ceeb rau kev khaws cia cov toj roob hauv pes zoo nkauj.
