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解惑“xaxwaswaswasxilxjalap”-梳理天下新闻

世界首条早期地xaxwaswaswasxilxjalap球高精度生物多样性曲线绘制完成

来源: 贵阳晚报
2024-12-23 08:13:22

最佳回答

“xaxwaswaswasxilxjalap”世界首条早期地xaxwaswaswasxilxjalap球高精度生物多样性曲线绘制完成

  中新xaxwaswaswasxilxjalap社南京12月20日电 xaxwaswaswasxilxjalap(记者 钟升)南京大学地球科学与工程学院研究员唐卿和中国科学院院士沈树忠等联合中外多家科研单位,20日在学术期刊《科学》(《Science》)上发表了世界首条早期地球高精度生物多样性曲线。

  研究团队耗时六年创建了目前全球数据最全、信息量最大的早期地球古生物地层数据库,并创新性地结合超算和人工智能等大数据分析手段,建立起迄今第一条早期地球高精度生物多样性曲线。

  本研究首次用大数据方法定量化地揭示了早期地球15亿年的生命演化历程,定量勾画了复杂生命的起源、辐射、灭绝、再次辐射至现代生态系统形成的早期历史过程。

  数据表明雪球地球等极端气候事件的发生会严重阻止地球早期生物圈的演化进程,导致生物大灭绝事件出现。而随着大冰期事件的结束,地表温度回暖以及大气氧含量升高促成了新一轮复杂生物大辐射事件,进一步证实了生命从简单到复杂的演化并不是简单线性的,而是呈长期滞缓与相对快速辐射交替发展的模式。

  该研究填补了早期地球生物多样性宏演化的空白,为阐明早期地球生命起源和演化规律、探索地外生命是否存在以及宜居地球的可持续发展提供重要的理论基础和借鉴。研究结果凸显了地表温度与氧气含量等环境因素的骤变对早期地球复杂生命系统演化的巨大影响。

  此项研究得到国家重点研发计划、国家自然科学基金委以及“深时数字地球”(DDE)国际大科学计划等项目的支持。(完)

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