Daim duab qhia chaw hauv av yog cov cuab yeej uas peb tuaj yeem paub txog tag nrho lub ntiaj teb thiab qee qhov chaw hauv zos ntawm nws thaj chaw. Lawv sawv cev rau cov duab ntau dua li qub ntawm thaj chaw tiag tiag nrog txhua yam khoom tam sim no thiab cov yam ntxwv ntawm nws txoj kev nyem. Muaj ntau ntau daim ntawv qhia chaw, tab sis lawv ua raws li daim ntawv qhia lub cev ntawm thaj chaw.
Cov Lus Qhia
Kauj ruam 1
Daim ntawv qhia lub cev yog daim ntawv qhia dav dav ntawm thaj chaw, uas qhia tau txhua yam ntawm nws cov xeeb ceem - nyem, thauj lub network, qhov chaw nyob ntawm qhov chaw nyob thiab lawv cov npe, hydrography, nroj tsuag, khoom, thaj tsam thawj coj.
Kauj ruam 2
Daim ntawv qhia kev tawm dag zog, raws li txoj cai, yog ib qho kev paub ntawm qhov xwm txheej thiab yog siv rau hauv phab ntsa phab ntsa, yog li ntawd, cov teb chaws me me tau siv rau nws, xws li Russia, Canada lossis Tebchaws Asmeskas, yog li daim ntawv qhia lub cev muaj peev xwm muab lub tswv yim ntawm tag nrho cov liaj ia tebchaws, nws qhov ntsuas yuav tsum yog kwv yees li 1: 4,000,000 - 1: 5,000,000. Daim ntawv qhia kev tsim lub ntiaj teb yuav yooj yim rau kev saib thiab tso qhov ntsuas ntawm 1: 15,000,000-1: 25,000,000.
Kauj ruam 3
Daim duab qhia kev tawm ntawm lub cev yog siv hauv cov txheej txheem kev kawm, cia koj muab lub tswv yim pom tseeb hauv thaj chaw kawm. Yuav kom nce lawv cov ntaub ntawv xov xwm, cov duab qhia raug siv cov paib thiab cov qauv siv uas qhia pom qhov chaw ntawm cov chaw tsim kev lag luam loj, tshav dav hlau, chaw nres tsheb ciav hlau, keeb kwm monuments lossis cov khoom ntuj tsim. Cov nyiaj tso tawm ntawm ntau qhov khoom siv ntuj tau tuaj yeem sau cim hauv daim ntawv qhia chaw lub cev.
Kauj ruam 4
Kev pab yog qhov yuav tsum ua nyob hauv daim duab qhia chaw (physical map). Nws yog qhia siv qee cov cim qhia tshwj xeeb thiab "hillshade" thaum lub suab nrov ntawm khi yog khi rau qhov siab ntawm qhov thooj av saum toj siab hiav txwv. Qhov no tso cai rau koj kom tau txais ib lub tswv yim ntawm thaj chaw los ntawm daim ntawv qhia lub cev, zoo li koj tau saib nws los ntawm qhov chaw.
Kauj ruam 5
Ntau qhov kev ua haujlwm raug siv los tsim cov ntawv qhia lub cev kom txo qis kev sib txuam. Lawv tsis tuaj yeem tshwm sim thaum cov contours tiag tiag uas muaj nyob ntawm npoo elliptical ntawm lub ntiaj teb pauv mus rau qhov chaw tiaj ntawm daim duab qhia. Ntawm chav kawm, qhov loj dua nws cov nplai, qhov ntau ntsuas qhov ntsuas tau ntawm nws yuav yog.
