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　　三九養(yǎng)生堂記者 鄧肯·蓋伊 報道

精彩|　　徐??(xu)俊??(jun)泉??(quan)分??(fen)析??(xi)指?(zhi)出??(chu)?，大?(da)部??(bu)分??(fen)黑??(hei)頸??(jing)鶴??(he)每??(mei)年??(nian)在??(zai)10月??(yue)初??(chu)都??(dou)會??(hui)飛??(fei)往??(wang)西??(xi)藏??(zang)越??(yue)冬??(dong)?，然??(ran)而??(er)?，吐??(tu)拉?(la)牧??(mu)場??(chang)的??(de)黑??(hei)頸??(jing)鶴??(he)已??(yi)經(jīng)??(jing)成??(cheng)為??(wei)“常??(chang)住??(zhu)居??(ju)民??(min)”?，因??(yin)為??(wei)這??(zhe)里?(li)的??(de)氣??(qi)候??(hou)已??(yi)經(jīng)??(jing)適?(shi)應(yīng)??(ying)了?(le)它??(ta)們?(men)的??(de)生??(sheng)存??(cun)需??(xu)求??(qiu)??。??據(jù)??(ju)監(jiān)??(jian)測??(ce)數(shù)??(shu)據(jù)??(ju)顯??(xian)示??(shi)?，吐??(tu)拉??(la)牧??(mu)場??(chang)的??(de)黑??(hei)頸??(jing)鶴??(he)數(shù)??(shu)量??(liang)在?(zai)過??(guo)去?(qu)十??(shi)多??(duo)年??(nian)間??(jian)從??(cong)最??(zui)初??(chu)的??(de)十??(shi)幾??(ji)只??(zhi)增??(zeng)長??(chang)到??(dao)目??(mu)前??(qian)的??(de)近??(jin)五??(wu)十??(shi)只??(zhi)??。由??(you)于??(yu)黑??(hei)頸?(jing)鶴??(he)繁?(fan)殖??(zhi)速??(su)度??(du)較??(jiao)慢??(man)?，每??(mei)兩??(liang)三??(san)年??(nian)才??(cai)能??(neng)繁??(fan)殖?(zhi)一??(yi)次??(ci)?，因??(yin)此??(ci)這?(zhe)一?(yi)增?(zeng)長??(chang)趨?(qu)勢??(shi)顯??(xian)得??(de)尤??(you)為??(wei)可??(ke)觀??(guan)??。　　監(jiān)??(jian)測??(ce)發(fā)?(fa)現(xiàn)??(xian)??，近??(jin)十??(shi)年??(nian)來??(lai)??，新??(xin)疆??(jiang)候??(hou)鳥??(niao)變?(bian)“留??(liu)鳥??(niao)”的??(de)情??(qing)況??(kuang)越??(yue)來??(lai)越??(yue)多??(duo)??，氣??(qi)候??(hou)因?(yin)素??(su)影??(ying)響??(xiang)下??(xia)??，南??(nan)疆??(jiang)候??(hou)鳥??(niao)變??(bian)“留??(liu)鳥??(niao)”的?(de)種??(zhong)群??(qun)數(shù)??(shu)量??(liang)明??(ming)顯??(xian)較??(jiao)多??(duo)??。??馬??(ma)鳴??(ming)說??(shuo)：“候??(hou)鳥??(niao)對??(dui)氣??(qi)候??(hou)的??(de)變??(bian)化??(hua)非??(fei)常??(chang)敏??(min)感?(gan)??，水??(shui)源??(yuan)充??(chong)足??(zu)、食??(shi)物??(wu)豐??(feng)富??(fu)、人?(ren)為??(wei)干??(gan)擾?(rao)小??(xiao)是??(shi)候??(hou)鳥?(niao)變??(bian)‘留??(liu)鳥??(niao)’的??(de)最??(zui)大?(da)因??(yin)素??(su)??。目??(mu)前??(qian)南??(nan)疆??(jiang)有??(you)黑??(hei)頸??(jing)鶴??(he)、大??(da)天?(tian)鵝??(e)、豆??(dou)雁??(yan)、次??(ci)蓑??(suo)羽??(yu)鶴??(he)、灰??(hui)鶴??(he)、灰??(hui)雁??(yan)??。北??(bei)疆??(jiang)有??(you)大?(da)天??(tian)鵝??(e)、鸕??(lu)鶿??(ci)、綠??(lv)頭?(tou)鴨??(ya)等??(deng)???！?/p>

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