Daim duab 8.18: Muaj peb thaj chaw nyob rau hauv qhov chaw qis qis ntawm cov dej: thaj chaw qhov chaw, uas muaj roob (headwater) ntws; thaj tsam kev hloov pauv, uas muaj qhov dav dav, qis qis qis; thiab thaj chaw dej nyab, uas muaj cov dej ntws ntws mus rau hauv cov dej loj dua lossis mus rau hauv dej hiav txwv.
Thaj chaw twg muaj lub taub dej ntawm cov kwj dej quizlet?
Peb thaj chaw ntawm tus dej muaj xws li thaj chaw, thaj chaw hloov pauv, thiab thaj chaw dej nyab: Hauv cheeb tsam qhov chaw, uas muaj roob (headwater) ntws, cov dej ntiav, txias, ntshiab, thiab nrawm nrawm.
kwj dej yog dab tsi?
Ib tus qauv yooj yim longitudinal ntes tau cov kev hloov pauv no los ntawm kev sib cais tus dej mus rau hauv peb thaj chaw: thaj chaw ntug dej, thaj chaw hloov chaw, thiab thaj chaw tso nyiaj(Daim duab 1.2). Qhov chaw headwaters feem ntau muaj txoj kab nqes tshaj plaws. Raws li cov dej txav mus hla cov pob zeb no, cov av nkos erodes thiab nqa mus rau hauv qab.
3 thaj chaw tseem ceeb ntawm tus dej yog dab tsi?
xaj kom txheeb xyuas thiab nkag siab txog kev sib txuas ntawm cov dej ntws mus rau hauv qab, cov kab dej ntws dav dav tau faib ua peb thaj chaw: qhov chaw (lossis headwaters) cheeb tsam, kev hloov pauv (lossis hloov chaw) cheeb tsam, thiab dej nyab (lossis tso cia) zone (FISRWG 1998; Miller and Spoolman 2012).
thaj chaw taub hau yog dab tsi?
thaj chaw taub dej yog thaj chaw sab saud ntawm cov dej ntws, as opposed to theoutflow los yog tawm ntawm ib tug watershed. Lub qhov dej yog feem ntau tab sis tsis yog ib txwm nyob los yog ze ntawm ntug dej hiav txwv, los yog dej faib.
