Cov txheej txheem:
Video: Puas aspen ntoo faib cov hauv paus hniav?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Quaking aspen propagates nws tus kheej feem ntau los ntawm hauv paus sprouts, thiab dav clonal colonies yog ntau. Txhua lub colony yog nws tus kheej clone, thiab tag nrho ntoo nyob rau hauv lub clone muaj zoo tib yam yam ntxwv thiab qhia ib ib hauv paus qauv. Ib lub clone tuaj yeem hloov xim ua ntej lossis tom qab lub caij nplooj zeeg ntau dua li nws cov neeg nyob sib ze aspen clones.
Xav txog qhov no, puas yog aspen tsob ntoo cag invasive?
Yog li txawm tias tom qab kev tuag ntawm niam txiv cog, lub keeb kwm tuaj yeem ua rau Ramets (clone) uas tsis ua rau cov nroj tsuag tuag thiab ua rau cov nplooj muaj sia nyob tau ntau xyoo. Cov no keeb kwm yog ntxeem tau thiab yog li no zoo heev rau kev tiv thaiv av yaig.
Ib yam li ntawd, dab tsi tshwj xeeb ntawm tsob ntoo Aspen? Aspen yog sau tseg rau nws lub peev xwm los rov tsim vegetatively los ntawm tua thiab suckers tshwm sim raws nws ntev lateral keeb kwm. Hauv paus sprouting ua rau ntau yam genetic zoo tib yam ntoo , nyob rau hauv aggregate hu ua "clone". Tag nrho cov ntoo nyob rau hauv ib lub clone muaj cov yam ntxwv zoo ib yam thiab qhia cov qauv hauv paus.
Tsis tas li ntawd, cov ntoo aspen txuas nrog li cas?
Qhov tshiab ntoo yog genetic zoo tib yam rau niam txiv tsob ntoo . Cov txheej txheem ntawm kev yug me nyuam tuaj yeem loj hlob hav zoov loj ntawm aspen uas yog tag nrho interconnected los ntawm cov hauv paus hniav thiab yog ib tug genetic neeg. Feem ntau "crab nyom" loj hlob thiab kis tau zoo ib yam thiab qhov no yog vim li cas nws nyuaj rau kev tso ib lub vaj.
Yuav ua li cas kom cov ntoo aspen tsis txhob kis tau?
Cov kauj ruam
- Kho cov tua thaum lub caij ntuj sov lig lossis thaum ntxov caij nplooj zeeg, yog tias koj ua tau. Ua li no ua ntej nplooj hloov xim.
- Yuav tshuaj tua kab mob broadleaf.
- Laum 45 degree lub kaum sab xis ntawm lub tsheb qis thiab mus rau hauv cov hauv paus hniav.
- Ncuav cov tshuaj tua kab mob rau hauv lub qhov.
- Cia li 6 lub hlis rau koj cov tshuaj tua kab mob ua haujlwm.
- Txiav koj tsob ntoo.
Pom zoo:
Koj puas ntxiv cov kua qaub rau hauv lub hauv paus lossis lub hauv paus rau cov kua qaub?
Ntxiv cov kua qaub ua kom cov concentration ntawm H3O + ions hauv cov tshuaj. Ntxiv ib lub hauv paus txo cov concentration ntawm H3O + ions hauv cov tshuaj. Cov kua qaub thiab lub hauv paus zoo li cov tshuaj tiv thaiv. Yog hais tias lub hauv paus yog ntxiv rau cov kua qaub, cov tshuaj yuav tsis acidic thiab txav mus rau nruab nrab ntawm pH nplai
Cov kab mob dab tsi nyob hauv cov hauv paus hniav ntawm cov nroj tsuag?
Cov kab mob hauv paus muaj txiaj ntsig txhawb cov nroj tsuag kev loj hlob thiab muab kev tiv thaiv los ntawm cov kab mob. Lawv feem ntau yog rhizobacteria uas yog Proteobacteria thiab Firmicutes, nrog ntau yam piv txwv los ntawm Pseudomonas thiab Bacillus genera. Rhizobium hom colonize legume keeb kwm tsim cov qauv nodule
Puas yog calcite siv hauv cov hniav nyiaj hniav kub?
Calcite Gemstones. Calcite yog cov ntxhia carbonate thiab yog daim ntawv ruaj khov tshaj plaws ntawm calcium carbonate, ib qho ntawm cov ntxhia hauv ntiaj teb. Nrog lub hardness ntawm tsuas yog 3 ntawm Mohs nplai, nws tsuas yog siv tau rau hauv cov hniav nyiaj hniav kub uas yuav tsis raug rau khob lossis khawb, xws li qhwv ntsej thiab pendants
Cov mis rau kev nrhiav cov hauv paus hniav yog dab tsi?
Nrhiav cov hauv paus hniav Cov mis rau hauv paus yog & rho tawm; b a -frac{b}{a} −ab? (txawm hais tias hu qhov no yog ib qho qauv yuav mus me ntsis overboard). Cov hauv paus hniav rau ib quadratic polynomial (polynomial nrog degree ob) a x 2 + b x + c ax^2 + bx + c ax2 + bx + c yog muab los ntawm tus qauv − b ± b 2 & rho tawm; 4 ib c2a
Vim li cas nws tseem ceeb heev uas yuav tsum xav txog ntau yam thaum txiav txim siab cov hauv paus hniav ntawm cov kab zauv polynomial?
Piv txwv li, tus naj npawb ntawm lub sij hawm ib tug muab polynomial sib npaug muaj ib lub hauv paus ntawm ib tug muab point yog lub multiplicity ntawm lub hauv paus. Qhov kev xav ntawm ntau qhov tseem ceeb yog qhov tseem ceeb kom suav tau kom raug yam tsis muaj kev qhia tshwj xeeb (piv txwv li, ob lub hauv paus suav ob zaug). Li no cov lus qhia, ' suav nrog ntau ntau'