亚洲免费av电影一区二区三区,日韩爱爱视频,51精品视频一区二区三区,91视频爱爱,日韩欧美在线播放视频,中文字幕少妇AV,亚洲电影中文字幕,久久久久亚洲av成人网址,久久综合视频网站,国产在线不卡免费播放

        ?

        The Great Barrier Reef shows coral comeback

        2021-12-07 02:41:30DavidMills
        瘋狂英語(yǔ)·新讀寫 2021年10期
        關(guān)鍵詞:旋風(fēng)監(jiān)控

        David Mills

        The health of the Great Barrier Reef has shown historic signs of regrowth,thanks to a year without major disturbances caused by weather events like heatwaves and tropical cyclones(旋風(fēng)).In an average year,the reef could be hit by three or four cyclones,but in 2021 no cyclones came on to the reef itself.

        A total of 127 reefs were surveyed,with 69 showing increases in hard coral cover.The signs of regrowth were apparent(明顯的)in the northern,central and southern parts of the 2,300 kilometers long reef.Coral cover was at 27 percent in the north,26 percent in the centre and 39 percent in the south.

        The clear message from this year's survey is that coral recovery can take place,and is taking place,in the right conditions.This year's report comes after the 2020 study,which found“encouraging”signs of coral growth in the central and southern parts of the Great Barrier Reef and coverage in the northern region.Of 86 monitored(監(jiān)控的)reefs,two thirds were showing signs of modest growth in 2020.The good news came with a note of caution,however,because the lack of destructive weather was unusual.

        There is some encouraging news in this report—and another good year would help continue recovery—but we also have to accept the increasing probability of extreme weather events.

        Indeed,the researchers also expressed doubt whether the coral variety leading the regrowth could withstand(承受)such threats.Lead researcher Dr Mike Emslie,from the Australian Institute of Marine Science (AIMS),warned that much of the coral growth they saw in 2021 came from Acropora corals,which are“fast to grow (but) often the first to go”as they are quite vulnerable.

        “The Great Barrier Reef is under continual pressure.We will see disturbances in the years ahead,”Dr Mike Emslie said.

        猜你喜歡
        旋風(fēng)監(jiān)控
        你被監(jiān)控了嗎?
        Zabbix在ATS系統(tǒng)集中監(jiān)控中的應(yīng)用
        4K高清監(jiān)控需要兩條腿走路
        看監(jiān)控?cái)z像機(jī)的4K之道
        腦力急旋風(fēng)
        腦力急旋風(fēng)
        腦力急旋風(fēng)
        腦力急旋風(fēng)
        腦力急旋風(fēng)
        腦力急旋風(fēng)
        色婷婷综合久久久久中文| 中文字幕一区二区三区四区| 免费无码专区毛片高潮喷水| 国产熟妇高潮呻吟喷水| 欧美 亚洲 国产 日韩 综AⅤ | 久久精品视频日本免费| 疯狂三人交性欧美| 免费xxx在线观看| 天堂69亚洲精品中文字幕| 丰满巨臀人妻中文字幕| 亚洲日韩精品无码专区网址| 蜜臀av一区二区| 国产伪娘人妖在线观看| 在线观看亚洲av每日更新影片| 忘忧草社区www日本高清| 日韩中文网| 青青草视频在线免费观看91| 红桃av一区二区三区在线无码av| 中文字幕人妻熟女人妻洋洋| 国产精品久久中文字幕第一页| 日本一区二区三级免费| 美女露内裤扒开腿让男人桶无遮挡| 少妇极品熟妇人妻无码| 亚洲国产精一区二区三区性色| 成年人观看视频在线播放| 国产真实老熟女无套内射| 亚洲欧美日韩国产精品网| 96中文字幕一区二区| 五月天国产成人av免费观看| 免费一区二区三区久久| 一本久久综合亚洲鲁鲁五月夫| 激情综合五月开心婷婷| 国产亚洲精品aaaaaaa片 | 国产午夜激无码av毛片不卡| 国产精品免费大片| 久久er这里都是精品23| 国产免费观看久久黄av麻豆| 亚洲老妈激情一区二区三区| 日韩在线视精品在亚洲| 久久精品国产熟女亚洲av麻豆 | 日本不卡一区二区三区在线|