Tej Chaw Nyob thiab Lawv Txoj Cai Tiv Thaiv rau Swan Geese (Anser cygnoides) raws East Asian Flyway.

Hom (Noog):Cov noog swan (Anser cygnoides)

Phau ntawv xov xwm:Kev Tshawb Nrhiav Nyob Deb

Cov Lus Qhia Txog:

Cov chaw nyob muab qhov chaw tseem ceeb rau cov noog tsiv teb tsaws chaw kom muaj sia nyob thiab yug me nyuam. Kev txheeb xyuas cov chaw nyob hauv cov theem txhua xyoo thiab lawv cov yam ntxwv cuam tshuam yog qhov tseem ceeb rau kev txuag raws txoj kev ya. Hauv kev tshawb fawb no, peb tau txais kev taug qab satellite ntawm yim tus swan geese (Anser cygnoides) caij ntuj no ntawm Poyang Lake (28 ° 57′4.2″, 116 ° 21′53.36″) txij li xyoo 2019 txog 2020. Siv cov qauv faib tawm ntawm hom tsiaj Maximum Entropy, peb tau tshawb xyuas qhov chaw nyob ntawm cov swan geese thaum lawv lub voj voog tsiv teb tsaws chaw. Peb tau tshuaj xyuas qhov kev koom tes ntawm ntau yam ib puag ncig rau qhov chaw nyob thiab kev txuag rau txhua qhov chaw nyob raws txoj kev ya. Peb cov txiaj ntsig qhia tau hais tias qhov chaw tseem ceeb ntawm cov swan geese caij ntuj no nyob hauv nruab nrab thiab qis dua ntawm Yangtze River. Cov chaw nres tsheb tau faib dav dav, feem ntau nyob hauv Bohai Rim, nruab nrab ntawm Yellow River, thiab Northeast Plain, thiab nthuav dav mus rau sab hnub poob mus rau Inner Mongolia thiab Mongolia. Cov chaw yug me nyuam feem ntau nyob hauv Inner Mongolia thiab sab hnub tuaj Mongolia, thaum qee qhov tau tawg hauv Mongolia nruab nrab thiab sab hnub poob. Cov feem pua ​​ntawm cov yam tseem ceeb ntawm ib puag ncig sib txawv ntawm qhov chaw yug me nyuam, qhov chaw nres, thiab qhov chaw caij ntuj no. Qhov chaw yug me nyuam tau cuam tshuam los ntawm qhov nqes hav, qhov siab, thiab qhov kub thiab txias. Qhov nqes hav, qhov ntsuas ntawm tib neeg txoj kev taug kev, thiab qhov kub thiab txias yog cov yam tseem ceeb uas cuam tshuam rau qhov chaw nres. Qhov chaw caij ntuj no tau txiav txim siab los ntawm kev siv av, qhov siab, thiab nag. Qhov xwm txheej kev txuag ntawm qhov chaw nyob yog 9.6% rau qhov chaw yug me nyuam, 9.2% rau qhov chaw caij ntuj no, thiab 5.3% rau qhov chaw nres. Yog li peb cov kev tshawb pom muab kev ntsuam xyuas thoob ntiaj teb tseem ceeb ntawm kev tiv thaiv qhov chaw nyob rau cov tsiaj geese ntawm East Asian Flyway.