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　　潘??(pan)晟??(sheng)昱?(yu)亦??(yi)指??(zhi)出??(chu)??，觀??(guan)察??(cha)發(fā)??(fa)現(xiàn)??(xian)候?(hou)鳥??(niao)北??(bei)遷??(qian)時??(shi)間??(jian)出??(chu)現(xiàn)??(xian)提??(ti)前??(qian)現(xiàn)??(xian)象??(xiang)??，抵??(di)達??(da)過??(guo)早??(zao)可??(ke)能??(neng)遭??(zao)遇??(yu)“倒??(dao)春?(chun)寒?(han)”??，導??(dao)致??(zhi)食??(shi)物??(wu)短??(duan)缺??(que)和??(he)雛??(chu)鳥??(niao)凍??(dong)亡??(wang)??。??因??(yin)此??(ci)??，每??(mei)年?(nian)遷??(qian)徙??(xi)季??(ji)的??(de)觀??(guan)測??(ce)和??(he)護??(hu)飛??(fei)工??(gong)作??(zuo)變??(bian)得??(de)更??(geng)加??(jia)重??(zhong)要??(yao)??，目??(mu)前??(qian)吉??(ji)林??(lin)各??(ge)處??(chu)濕??(shi)地??(di)都?(dou)有??(you)巡??(xun)護??(hu)隊??(dui)伍??(wu)??，為??(wei)候??(hou)鳥??(niao)構??(gou)筑??(zhu)安??(an)全??(quan)遷??(qian)徙??(xi)保??(bao)障??(zhang)網?(wang)??。(完??(wan))　　吉??(ji)林??(lin)坐??(zuo)擁??(yong)松??(song)花??(hua)江??(jiang)、圖??(tu)們??(men)江??(jiang)、鴨??(ya)綠??(lv)江??(jiang)、遼??(liao)河??(he)、綏??(sui)芬??(fen)河??(he)五?(wu)大??(da)水??(shui)系??(xi)??，濕??(shi)地??(di)總??(zong)面??(mian)積??(ji)逾??(yu)170萬??(wan)公??(gong)頃??(qing)??，形??(xing)成??(cheng)了??(le)跨??(kua)越??(yue)東??(dong)西??(xi)數??(shu)百??(bai)公??(gong)里??(li)的??(de)生??(sheng)態(tài)??(tai)長??(chang)廊??(lang)??。??如??(ru)今??(jin)??，這??(zhe)里??(li)已??(yi)經??(jing)成??(cheng)為??(wei)幾?(ji)百??(bai)種??(zhong)候??(hou)鳥?(niao)遷??(qian)徙??(xi)的??(de)“黃??(huang)金??(jin)通??(tong)道??(dao)”??。。