Lub txheej txheej ntawm tsob ntoo hu ua dab tsi?
Lub txheej txheej ntawm tsob ntoo hu ua dab tsi?

Video: Lub txheej txheej ntawm tsob ntoo hu ua dab tsi?

Video: Lub txheej txheej ntawm tsob ntoo hu ua dab tsi?
Video: dab neeg keeb kwm ntawm tsob ntoo muaj dab ntuj thaum ub 2023 5 13 2024, Kaum ib hlis
Anonim

Bark yog cov txheej txheej sab nrauv ntawm stems thiab keeb kwm ntawm woody nroj tsuag. Nroj tsuag nrog tawv ntoo muaj xws li ntoo , woody vines, thiab shrubs. Bark hais txog tag nrho cov ntaub so ntswg sab nraum lub vascular cambium thiab yog ib lo lus nontechnical. Nws overlays ntoo thiab muaj cov tawv tawv thiab cov sab nrauv tawv.

Ib yam li ntawd, tib neeg nug, dab tsi yog txheej txheej ntawm tsob ntoo lub cev hu ua?

Lub bark yog ib sab nrauv npog cov ntaub so ntswg tuag, uas tiv thaiv cov tsob ntoo los ntawm huab cua, kab mob, kab, hluav taws thiab mechanical raug mob. Cov yam ntxwv ntawm cov tawv ntoo tuaj yeem sib txawv heev los ntawm tsob ntoo rau tsob ntoo thiab tuaj yeem siv tau hauv kev txheeb xyuas. Tom ntej no txheej tam sim ntawd nyob rau hauv lub bark yog hu ua phloem.

Ib yam li ntawd, cov txheej ntawm tsob ntoo yog dab tsi? Raws li tau hais, tsob ntoo trunks muaj 5 cais txheej rau lawv. Lawv yog cov sab nrauv tawv , sab hauv tawv (phloem), cambium cell txheej, sapwood, thiab heartwood. Txhua txheej muaj lawv lub hom phiaj, tab sis tag nrho, lub cev lub luag haujlwm tseem ceeb yog los tiv thaiv thiab txhawb nqa tsob ntoo. Saib hauv qab no los tshuaj xyuas txhua txheej thiab lawv ua dab tsi.

Ib yam li ntawd, sab nraum tsob ntoo hu ua dab tsi?

Cov tawv tawv sab nrauv yog cov tsob ntoo kev tiv thaiv los ntawm sab nraum ntiaj teb. Cov tawv ntoo sab hauv, lossis "phloem", yog cov kav dej uas cov zaub mov xa mus rau lwm tus tsob ntoo . Nws nyob rau ib lub sij hawm luv luv, ces tuag thiab tig mus rau cork los ua ib feem ntawm cov tawv tawv tiv thaiv. Cambium cell txheej yog qhov loj hlob ntawm lub cev.

Loggers pom dab tsi hauv nruab nrab ntawm tsob ntoo?

Tus dev, hu ua Stuckie, tau tshawb pom hauv xyoo 1980 thaum cov loggers rau Kraft Corporation txiav cov ntoo qhib rau hauv cav. Lawv pom tus mummified yos hav zoov nyob rau hauv ib tug hollow stretch nyob rau saum toj ntawm lub tsob ntoo - thiab tam sim no nws yog lub ntsiab attraction ntawm Forest World, a tsob ntoo Tsev khaws puav pheej hauv Waycross, Georgia.

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