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近一万年间,长江源区逐渐“暖湿”
发布时间:2021-06-11     作者:韩扬眉   来源:中国科学报   分享到:

zhongkeyuanqingzanggaoyuansuohuboyuhuanjingbianhuatuanduizhulipingyanjiuyuandengliyongqingzanggaoyuanzhongbutanggulashanquchibuzhangcuohuboyanxinchenjiwudeduozhibiaoshuju,zhongjianlezhangjiangyuanquguoqujin13000nianguqihoubianhuajilu。jieguobiaoming,gaiquyujinglileconglenggandaonuanshizaidaolianggandeguocheng,muqianchengxiannuanshihuaqushi。xiangguanchengguojinrifabiaozaiguojizhimingdixueqikan《gudili、guqihou、gushengtai》。

“yiqingzanggaoyuanweizhutidedisanjishimuqianquanqiubiannuanzuiqiangliedediqu,yeshiweilaishouquanqiuqihoubianhuayingxiangzuimingandediquzhiyi。”yanjiuyuanzhulipingjieshao,xifengyuyindujifengshikongzhiqingzanggaoyuanqihouyuhuanjingbianhuadejuedingxingyinsu,weiyuxifenghejifenghuanliuguoduquyudehuanjingbianhuaduihuanliujuyoushifenmingandexiangying。 

zhangjiangyuanquchuyuxiandainanyajifengbeiyuan,shishouxifengyujifengxietongyingxiangdeguodudidaiheneiwailiuqudefenjiedidai,yeshidierciqingzangkekaojianghuyuandehexinqu。geladandongbingchuan、duoersuodongcuo-chibuzhangcuo、tuotuohe、zhajiazangbudengzhongyaoshuiziyuanzaitizaizheilijuji。muqian,gaiquyushangquefafugaiwannianyishangdelianxuhuanjingbianhuajilu。

zhenduishangshuwentihequyu,keyanrenyuanduiquzichibuzhangcuodehuboyanxinjinxingliduyuyuansudengduozhibiaofenxi,pinggulenanyajifengyuzhongweiduxifengzhijianguodudaiziwanbingqiyilaideguqihoubianhuatedianyijihuanliuxiaoying。jieguoxianshi,zhangjiangyuanquwanbingqimoqiyilaideqihoubianhuafenweisigejieduan:jujin12700-10600niandewanbingqixiangduihanleng;jujin10600-6600niandezaoquanxinshibijiaonuanshi;jujin6600-1900niandezhongwanquanxinshiwenliangpianlengheganzao;zuijin2000nian,qihouchuxianbiannuanbianshidequshi,youyizuijin500nianzuiweixianzhu。

quanxinshibeirenweishizuinianqingdedizhiniandai,kaishiyu12000-10000nianqianchixuzhijin。

zhulipingbiaoshi,zhangjiangyuanquguoquyiwanduoniandeyouxiaoshidu,zhengtizunxunnanyajifengqudebianhuamoshi,jizaoquanxinshiyouxiaoshiduzuida,zhongquanxinshizhujianjiangdi,wanquanxinshijiaoshidudi,biandeganzao。

ciwai,shoubeibanqiuxiajitaiyangfushekongzhi,jifenghuanliuqudongleqingzanggaoyuanzhongbuwanbingqiyilaideguqihoubianhua。zaoquanxinshiqihounuanshi,huboshuiweishenggao。dandaolezhongquanxinshi,shoubayuetaiyangfusheyingxiang,gaiquyuzhengfazengqiang,tansuanyanchenjizengjia,qihouzhujianbiandeganzaoqilai,huboshuiweixiajiang。zaizhongwanquanxinshi,suizhenanyajifengmingxianjianruo,qihoubianlengbianganzao,danshishouxifengxiaoying(rujiangxue)hebingchuanrongshuiyingxiang,huboweichizaizhongdengshuiwei。

muqian,gaiquyuqihoushuiwentiaojianchuyuwenhepianshidezhuangtai,kenengjiejinzaoquanxinshidewanqi。yuqitaquyujiluxiangbi,gaiquyujuyouyujifenghexifengdaibuwanquantongbuyanhuadeguodutezheng。

gaiyanjiuweipingguzhangjiangyuanqushuiziyuanbianhuadeweilaifazhanqushi,sanjiangyuanqushengtaihuanjingpinggujixiangguanyanjiutigonglekexuecankao。


xiangguanlunwenxinxi:http://doi.org/10.1016/j.palaeo.2021.110433 


【womenzunzhongyuanchuang,yezhuzhongfenxiang。banquanyuanzuozhesuoyou,ruyouqinfannindequanyiqingjishilianxi,womenjiangdiyishijianshanchu。fenxiangneirongbudaibiaobenwangguandian,jingongcankao。】

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