Muaj peev xwm Habitats thiab lawv txoj kev txuag rau Swan Geese (Anser cygnoides) raws li East Asian Flyway.

Hom (Avian):Swan geese (Anser cygnoides)

Phau ntawv Journal:Chaw Taws Teeb Pom Kev

Abstract:

Habitats muab qhov chaw tseem ceeb rau cov noog tsiv teb tsaws chaw kom muaj sia nyob thiab yug me nyuam. Kev txheeb xyuas qhov muaj peev xwm nyob hauv lub voj voog txhua xyoo thiab lawv cov yam ntxwv cuam tshuam yog qhov tseem ceeb rau kev txuag raws txoj kev ya. Hauv txoj kev tshawb no, peb tau txais satellite taug qab ntawm yim swan geese (Anser cygnoides) lub caij ntuj no ntawm Poyang Lake (28° 57′4.2″, 116° 21′ 53.36″) los ntawm 2019 txog 2020. Siv cov qauv kev faib khoom ntau tshaj plaws Entropy, peb tshawb xyuas lub peev xwm thaj chaw faib ntawm swan geese thaum lawv tsiv teb tsaws chaw. Peb tau txheeb xyuas qhov txheeb ze ntawm ntau yam ib puag ncig rau thaj chaw tsim nyog thiab kev txuag cov xwm txheej rau txhua qhov chaw nyob raws txoj kev ya. Peb cov txiaj ntsig tau pom tias thawj lub caij ntuj no ntawm swan geese nyob rau hauv nruab nrab thiab qis dua ntawm tus dej Yangtze. Cov chaw nres tsheb tau nthuav dav, feem ntau hauv Bohai Rim, nruab nrab ntawm Dej Hiav Txwv, thiab Northeast Plain, thiab txuas mus rau sab hnub poob mus rau Inner Mongolia thiab Mongolia. Cov chaw yug me nyuam feem ntau yog nyob hauv Inner Mongolia thiab sab hnub tuaj Mongolia, thaum qee qhov tawg nyob rau hauv Mongolia hauv nruab nrab thiab sab hnub poob. Cov txiaj ntsig ntawm qhov tseem ceeb ntawm ib puag ncig yog txawv hauv thaj chaw yug me nyuam, chaw nres tsheb, thiab chaw caij ntuj no. Cov chaw yug me nyuam tau cuam tshuam los ntawm txoj kab nqes, qhov siab, thiab qhov kub thiab txias. Txoj kab nqes, tib neeg hneev taw taw qhia, thiab qhov kub thiab txias yog qhov tseem ceeb uas cuam tshuam rau qhov chaw nres tsheb. Lub caij ntuj no tau txiav txim siab los ntawm kev siv av, qhov siab, thiab nag lossis daus. Kev txuag cov chaw nyob yog 9.6% rau thaj chaw yug me nyuam, 9.2% rau lub caij ntuj no, thiab 5.3% rau qhov chaw nres tsheb. Peb qhov kev tshawb pom yog li muab qhov kev ntsuam xyuas thoob ntiaj teb tseem ceeb ntawm cov chaw muaj peev xwm tiv thaiv kab mob geese ntawm East Asian Flyway.