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科学通报（英文版）
科学通报（英文版）

周光召

旬刊

1001-6538

csb@scichina.com

010-64036120

100717

北京东黄城根北街16号

科学通报（英文版）/Journal Chinese Science BulletinEISCI
查看更多>>《科学通报》创刊于1950年，是中国科学院主办、中国科学杂志社承办的自然科学综合性学术刊物，报道自然科学各学科基础理论和应用研究方面具有创新性和和高水平的、具有重要意义的最新研究成果，要求文章的可读性强，能在一个比较宽范的学术领域产生深刻的影响。我们的目标是：成为国内外读者了解中国乃至世界范围的自然科学各研究领域最新成果的主要窗口之一。《科学通报》进入了国际上主要检索系统，如CA，EI，日本《科技速报》和美国科学信息研究所（ISI）的以下系统：Science Citation Index(SCI-CDE)，SCISearch，Current Contents(PC&E)和Research Alert。
正式出版
收录年代

    Millennial changes and cooling trends in land surface warm-season temperatures during the Holocene

    Yukun ZhengHongyan LiuHongya WangShucheng Xie...
    2930-2937页
    查看更多>>摘要：The scarcity of proxies and calibration models for quantitatively reconstructing millennial timescale sea-sonal temperature tremendously constraints our understanding of the Holocene thermal variation and its driven mechanisms.Here,we established two global warm-season temperature models by applying deep learning neural network analysis to the branched tetraether membrane lipids originating from surface soil and lacustrine sediment bacteria.We utilized these optimal models in global well-dated lacustrine,peatland,and loess profiles covering the Holocene.All reconstructions of warm-season temperatures,consistent with climate model simulations,indicate cooling trends since the early Holocene,primarily induced by decreased solar radiation in the Northern Hemisphere due to the precession peak at the early.We further demonstrated that the membrane lipids can effectively enhance the future millennial sea-sonal temperature research,including winter temperatures,without being restricted by geographical location and sedimentary carrier.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Coping with the concurrent heatwaves and ozone extremes in China under a warming climate

    Mengmeng LiXin HuangDan YanShiyi Lai...
    2938-2947页
    查看更多>>摘要：Intensive human activity has brought about unprecedented climate and environmental crises,in which concurrent heatwaves and ozone extremes pose the most serious threats.However,a limited under-standing of the comprehensive mechanism hinders our ability to mitigate such compound events,espe-cially in densely populated regions like China.Here,based on field observations and climate-chemistry coupled modelling,we elucidate the linkage between human activities and the climate system in heat-related ozone pollution.In China,we have observed that both the frequency and intensity of heatwaves have almost tripled since the beginning of this century.Moreover,these heatwaves are becoming more common in urban clusters with serious ozone pollution.Persistent heatwaves during the extremely hot and dry summers of 2013 and 2022 accelerated photochemical ozone production by boosting anthro-pogenic and biogenic emissions,and aggravated ozone accumulation by suppressing dry deposition due to water-stressed vegetation,leading to a more than 30％increase in ozone pollution in China's urban areas.The sensitivity of ozone to heat is demonstrated to be substantially modulated by anthropogenic emissions,and China's clean air policy may have altered the relationship between ozone and tempera-ture.Climate model projections further highlight that the high-emission climate-socioeconomic scenario tends to intensify the concurrent heat and ozone extremes in the next century.Our results underscore that the implementation of a strict emission strategy will significantly reduce the co-occurrence of heat-waves and ozone extremes,achieving climate and environmental co-benefits.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Saline-alkali land reclamation boosts topsoil carbon storage by preferentially accumulating plant-derived carbon

    Lin ChenGuixiang ZhouBiao FengChao Wang...
    2948-2958页
    查看更多>>摘要：Saline-alkali land is an important cultivated land reserve resource for tackling global climate change and ensuring food security,partly because it can store large amounts of carbon(C).However,it is unclear how saline-alkali land reclamation(converting saline-alkali land into cultivated land)affects soil C storage.We collected 189 adjacent pairs of salt-affected and cultivated soil samples(0-30 cm deep)from the Songnen Plain,eastern coastal area,Hetao Plain,and northwestern arid area in China.Various soil prop-erties,the soil inorganic C(SIC),organic C(SOC),particulate organic C(POC),and mineral-associated organic C(MAOC)densities,and plant-and microbial-derived C accumulation were determined.Saline-alkali land reclamation inconsistently affected the SIC density but significantly(P＜0.001)increased the SOC density.The SOC,POC,and MAOC densities were predicted well by the integrative soil amelioration index.Saline-alkali land reclamation significantly increased plant-derived C accumulation and the plant-derived C to microbial-derived C ratios in all saline-alkali areas,and less microbial trans-formation of plant-derived C(i.e.,less lignin degradation or oxidation)occurred in cultivated soils than salt-affected soils.The results indicated that saline-alkali land reclamation leads to plant-derived C becoming the dominant contributor of SOC storage.POC storage and MAOC storage were strongly linked to plant-and microbial-derived C accumulation,respectively,caused by saline-alkali land reclamation.Our findings suggest that saline-alkali land reclamation increases C storage in topsoil by preferentially promoting plant-derived C accumulation.
      原文链接:
    • NETL
    • NSTL
    • 万方数据