检索结果-南通市图书馆

The δ^(15)N values of foxtail millet(Setaria italica)and common millet(Panicum miliaceum)are reliable indicators of manuring practices

引用

Science China Earth Sciences 2024年第9期67卷 2910-2923页

作者： Jishuai YANG Xiaoyan YANG Ting YOU fahu chen Key Scientific Research Base of Bioarchaeology in Cold and Arid Regions(National Cultural Heritage Administration) Key Laboratory of Western China’s Environmental Systems(Ministry of Education)College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Group of Alpine Paleoecology and Human Adaptation(ALPHA) State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China

Millet agriculture,which originated in northern China,alongside rice agriculture,have nurtured the Chinese *** manuring practices likely promoted and maintained sustainable millet agricultural production in the loess area of northern ***,ongoing controversy exists regarding the indicators of prehistoric manuring intensity of foxtail millet(Setaria italica)and common millet(Panicum miliaceum).Here,we present the results of pot and field fertilization experiments on two millet *** findings suggest that manuring can significantly increase the δ^(15)N values of foxtail millet,and its δ^(15)N values increase with increasing manuring *** δ^(15)N values of foxtail millet leaves are systematically greater than those of grains by approximately 1.6‰.Manuring could have a long-term residual impact on increasing the δ^(15)N values of soil and millet *** with previous crop fertilization experiment results,we propose that the impact of manuring on the δ^(15)N values of non-nitrogen-fixing crops is roughly *** δ^(15)N value and amount of manure are key factors determining the extent of change in plant δ^(15)N *** millet grain δ^(15)N values can serve as reliable indicators of manuring ***,we provide an interpretive framework for assessing the correlation between manuring levels and the δ^(15)N values of archaeological millet *** δ^(15)N values of ancient millet grains suggest widespread and intensive manuring practices in prehistoric millet agriculture in northern China,spanning from the early Yangshao period to the Longshan period.

关键词： Millet farming Manuring experiment Farming system Archaeobotany North China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The δN values of foxtail millet（Setaria italica） and common millet（Panicum miliaceum） are reliable indicators of manuring practices

引用

Science China Earth Sciences 2024年

作者： Jishuai YANG Xiaoyan YANG Ting YOU fahu chen Key Scientific Research Base of Bioarchaeology in Cold and Arid Regions (National Cultural Heritage Administration) Key Laboratory of Western China's Environmental Systems (Ministry of Education) College of Earth and Environmental Sciences Lanzhou University Group of Alpine Paleoecology and Human Adaptation (ALPHA) State Key Laboratory of Tibetan Plateau Earth System Resources and Environment (TPESRE) Institute of Tibetan Plateau Research Chinese Academy of Sciences State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou University

Millet agriculture, which originated in northern China, alongside rice agriculture, have nurtured the Chinese civilization. Prehistoric manuring practices likely promoted and maintained sustainable millet agricultural production in the loess area of northern China. However, ongoing controversy exists regarding the indicators of prehistoric manuring intensity of foxtail millet(Setaria italica) and common millet(Panicum miliaceum). Here, we present the results of pot and field fertilization experiments on two millet types. Our findings suggest that manuring can significantly increase the δ15N values of foxtail millet,and its δ15N values increase with increasing manuring levels. The δ15N values of foxtail millet leaves are systematically greater than those of grains by approximately 1.6‰. Manuring could have a long-term residual impact on increasing the δ15N values of soil and millet crops. Combined with previous crop fertilization experiment results, we propose that the impact of manuring on the δ15N values of non-nitrogen-fixing crops is roughly consistent. The δ15N value and amount of manure are key factors determining the extent of change in plant δ15N values. The millet grain δ15N values can serve as reliable indicators of manuring practices. Finally, we provide an interpretive framework for assessing the correlation between manuring levels and the δ15N values of archaeological millet remains. The δ15N values of ancient millet grains suggest widespread and intensive manuring practices in prehistoric millet agriculture in northern China, spanning from the early Yangshao period to the Longshan period.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

“Mega-sandwich pattern”of interdecadal precipitation variations and its regional manifestation in the Asian summer precipitation region

引用

Science Bulletin 2024年第17期69卷 2656-2659页

作者： fahu chen Lingxin Huang Dianbin Cao Jie chen Shengqian chen Shuai Ma Tianjun Zhou Alpine Paleoecology and Human Adaptation Group(ALPHA) State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China

The Tibetan Plateau(TP)is an important link between the South Asian monsoon(SAM)region,the East Asian monsoon region,and the drylands of Central *** changes within these regions are dominated by both the monsoon and the *** has prompted the scientific community to adopt a broad spatial perspective,proposing concepts such as the"Pan-Third Poleoor"Asian summer precipitationo,to better understand the regional climate dynamics,their driving mechanisms,and the resulting major ecological and environmental impacts.

关键词： Asian monsoon precipitation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reconciling East Asia’s mid-Holocene temperature discrepancy through vegetation-climate feedback

引用

Science Bulletin 2024年第15期69卷 2420-2429页

作者： Jie chen Qiong Zhang Zhengyao Lu Yanwu Duan Xianyong Cao Jianping Huang fahu chen Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Department of Physical Geography and Bolin Centre for Climate Research Stockholm UniversityStockholm 10691Sweden Department of Physical Geography and Ecosystem Science Lund UniversityLund 22100Sweden Group of Alpine Paleoecology and Human Adaptation(ALPHA) State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau Research(ITPCAS)Chinese Academy of Sciences(CAS)Beijing 100101China Collaborative Innovation Center for Western Ecological Safety Lanzhou UniversityLanzhou 730000China

The term“Holocene temperature conundrum”refers to the inconsistencies between proxy-based reconstructions and transient model simulations,and it challenges our understanding of global temperature evolution during the *** reconstructions indicate a cooling trend following the Holocene Thermal Maximum,while model simulations indicate a consistent warming trend due to icesheet retreat and rising greenhouse gas *** factors,such as seasonal biases and overlooked feedback processes,have been proposed as potential causes for this *** this study,we examined the impact of vegetation-climate feedback on the temperature anomaly patterns in East Asia during the mid-Holocene(~6 ka).By utilizing the fully coupled Earth system model EC-Earth and performing simulations with and without coupled dynamic vegetation,our objective was to isolate the influence of vegetation changes on regional temperature *** findings reveal that vegetation-climate feedback contributed to warming across most of East Asia,resulting in spatially diverse temperature changes during the mid-Holocene and significantly improved model-data *** results high-light the crucial role of vegetation-climate feedback in addressing the Holocene temperature conundrum and emphasize its importance for simulating accurate climate scenarios.

关键词： Holocene temperature conundrum Holocene Thermal Maximum Vegetation-climate feedback East Asia Paleoclimate simulations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evidence of hybridization of cattle and aurochs on the Tibetan Plateau3750 years ago

引用

Science Bulletin 2024年第18期69卷 2825-2828页

作者： Shungang chen Lele Ren Yu Gao Guanghui Dong Guilian Sheng Jianlin Han Xinyi Liu Ningbo chen fahu chen Group of Alpine Paleoecology and Human Adaptation(ALPHA) Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China School of History and Culture Lanzhou UniversityLanzhou 730000China Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China School of Environmental Studies China University of GeosciencesWuhan 430078China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430078China Yazhouwan National Laboratory Sanya 572024China Department of Anthropology Washington University in St.LouisSt.Louis MO 63130USA Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100China

Wild aurochs(Bos primigenius)were once widespread across Eurasia and North Africa but became extinct around the 17th century[1].Aurochs are considered the ancestor of modern taurine(*** taurus)and indicine(***)cattle,which were independently domesticated within regions restricted to Southwest Asia and South Asia,respectively[2,3].Extensive gene flow from local aurochs to domestic cattle has been well documented in Southwest Asia,Europe,and Africa[3,4],raising questions about the mechanisms underlying both the domestication and dispersal of early cattle.

关键词： B.t Wild Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

陆地地表水卫星遥感监测进展与展望

引用

科学通报 2024年第22期69卷 3268-3282页

作者：苏雅楠陈圣乾冯敏陈发虎中国科学院青藏高原研究所青藏高原地球系统与资源环境国家重点实验室北京100101 中国科学院大学资源与环境学院北京100049 兰州大学西部环境教育部重点实验室兰州730000

陆地地表水(简称地表水)是地球系统的重要组成部分,也是人类赖以生存的重要水资源储备地.然而,地表水的分布范围广,空间异质性强,受到自然和人类诸多因素的综合影响,正经历着剧烈变化,对生态系统和社会的可持续发展产生着深远影响.在这... 详细信息

陆地地表水(简称地表水)是地球系统的重要组成部分,也是人类赖以生存的重要水资源储备地.然而,地表水的分布范围广,空间异质性强,受到自然和人类诸多因素的综合影响,正经历着剧烈变化,对生态系统和社会的可持续发展产生着深远影响.在这样的背景下,遥感技术因其广泛覆盖、长时序观测的特性而日益成为研究地表水时空变化不可或缺的关键工具.本文从地表水遥感监测的数据源、方法、主要内容和发展趋势等方面对现有研究进行了综述.研究发现,近十年来,地表水遥感监测正处于黄金发展期.光学遥感数据源,如Landsat、Sentinel-2等,在地表水环境监测中发挥着主导作用.全球地表水数据产品,如Global Surface Water(GSW),为大区域地表水研究提供了有力支持.然而,新兴的大数据方法,例如深度学习,在地表水研究中仍显薄弱.受到光学遥感监测方法的局限,对于水库、湿地等特殊类型地表水的研究滞后于对大型湖泊等水体的研究.同时,中国、美国、欧洲和加拿大等地成为地表水研究的热点区域,而在经济欠发达、气候较干旱的地区,对地表水的研究相对较少.未来的研究需要更多关注极端气候变化下的地表水动态,提高对野外调查困难地表水(如热融湖和冰川湖)的识别能力.特别需要加强深度学习等大数据新方法在地表水研究中的应用,以推动对地表水更全面的认识,为地球系统研究和可持续发展提供关键支持.

关键词：地表水遥感观测大数据地球系统科学可持续发展

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

青藏高原牦牛驯化的考古学与遗传学研究进展及展望

引用

科学通报 2024年第11期69卷 1417-1428页

作者：陈顺港高玉陈宁博邱强王昱程杨晓燕陈发虎中国科学院青藏高原研究所古生态与人类适应团队北京100101 中国科学院青藏高原研究所青藏高原地球系统与资源环境重点实验室北京100101 中国科学院大学北京100049 西北农林科技大学动物科技学院陕西省动物遗传育种与繁殖重点实验室杨凌712100 西北工业大学生态环境学院西安710072 Department of Zoology University of CambridgeCambridge CB23EJUK 兰州大学资源环境学院西部环境教育部重点实验室兰州730000 寒区旱区生物考古国家文物局重点科研基地兰州730000

家牦牛在史前人类定居青藏高原的过程中起到了巨大作用,但牦牛的驯化过程仍存在诸多未解决的科学问题.本文梳理了牦牛驯化的考古学和遗传学研究进展,展望了开展牦牛驯化与人类定居青藏高原过程研究的未来方向.家牦牛最早的考古学证据来... 详细信息

家牦牛在史前人类定居青藏高原的过程中起到了巨大作用,但牦牛的驯化过程仍存在诸多未解决的科学问题.本文梳理了牦牛驯化的考古学和遗传学研究进展,展望了开展牦牛驯化与人类定居青藏高原过程研究的未来方向.家牦牛最早的考古学证据来自距今3750年前的青藏高原南部拉萨河谷,但现代遗传学研究显示,牦牛的驯化可追溯至全新世中期,驯化地点最有可能位于西藏东南部的昌都地区,其种群数量增长与人类大规模长年定居青藏高原高海拔地区的历史高度相关,且黄牛的基因渗入对牦牛的驯化过程产生了深刻影响.基于现有研究进展,本文建议:(1)针对青藏高原考古遗址开展系统性的动物考古学研究;(2)应用ZooMS和古DNA技术筛选和鉴定牦牛骨骼遗存,结合古环境DNA进行遗传学研究,追溯牦牛驯化的时间和地点;(3)开展野牦牛与黄牛的杂交驯化模式研究,理解牦牛驯化及其扩散对史前人类在青藏高原生存和发展的促进作用.

关键词：牦牛动物驯化考古学遗传学古DNA

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Weakened East Asian summer monsoon triggers increased precipitation in Northwest China

引用

Science China Earth Sciences 2021年第5期64卷 835-837页

作者： fahu chen Jie chen Wei HUANG Key Laboratory of Alpine Ecology(LAE) Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences(CAS)Beijing 100101China Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China

Increased precipitation/humidity in Northwest China is an important scientific issue in the context of global climatic warming(chen et al.,2019).The climate of Northwest China is dominated by the westerly circulation and its water vapor is supplied mainly by the mid-latitude westerlies,with the rainy season occurring in summer(chen et al.,2019;Zhang et al.,2019a).

关键词： Northwest summer precipitation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Environmental and technological effects on ancient social evolution at different spatial scales

引用

Science China Earth Sciences 2017年第12期60卷 2067-2077页

作者： DONG GuangHui LIU FengWen chen fahu MOE Key Laboratory of Western China's Environmental Systems(Ministry of Education) Lanzhou UniversityLanzhou 730000China

The rise and fall of ancient cultures and civilizations is a hotly debated topic that has generated disagreements and disputes. In this paper we summarize some case studies on the abandonment of ancient sites, the prosperity and collapse of ancient cultures, and demographic changes, as well as the influence of environment and technology during the prehistoric and historic periods. We then suggest that the dominant influencing factors for the evolution of ancient societies vary by spatial *** the local scale, sudden disasters are critical factors leading to the destruction and abandonment of large settlements. On a regional scale, climatic variations(e.g., droughts or cold events lasting for decades or centuries) are important factors that induce the collapse of ancient civilizations and mass migrations, while an enduring and stable optimal climate facilitated the prosperity of ancient civilizations. On a global scale, major technological innovations and their dispersion lasting for centuries and even millennia are major catalysts for population growth and social development. Lastly, we illustrate a possible mechanism under which environmental and technological factors played a critical role in ancient human survival and social evolution on different spatial scales.

关键词： Prehistoric period Historic period Man-land relationship Cultural evolution Sudden disaster Climatic variation Technological innovation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Estimation of China’s terrestrial ecosystem carbon sink:Methods,progress and prospects

引用

Science China Earth Sciences 2022年第4期65卷 641-651页

作者： Shilong PIAO Yue HE Xuhui WANG fahu chen College of Urban and Environmental Sciences Peking UniversityBeijing 100871China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China

China announced its national goal to reach the peak of carbon emission by 2030 and achieve carbon neutrality by 2060,during the General Assembly of the United Nations in September *** this context,the potential of the carbon sink in China’s terrestrial ecosystems to mitigate anthropogenic carbon emissions has attracted unprecedented attention from scientific communities,policy makers and the ***,we reviewed the assessments on China’s terrestrial ecosystem carbon sink,with focus on the principles,frameworks and methods of terrestrial ecosystem carbon sink estimates,as well as the recent progress and existing *** forward,we identified critical issues for improving the accuracy and precision of China’s terrestrial ecosystem carbon sink,in order to serve the more realistic policy making in pathways to achieve carbon neutrality for China.

关键词： Terrestrial ecosystem Carbon sink Carbon neutrality China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：